GIFT OF 
 
X3uarterly 
 
 of the 
 
 Colorado School of Mines 
 
 VOL. SEVEN OCTOBER, 1912 NUMBER THREE 
 
 \^^ ^~'^ 
 
 An Extension 
 
 of the 
 
 Dewey System of Classification 
 
 as applied to 
 
 Mining 
 
 By CARL A. ALLEN, E. M. 
 
 Assistant Professor of Mining 
 
 Colorado School of Mines 
 
 INTRODUCTION. 
 
 A serious problem that confronts every engineer is how to 
 make most available that mass of information to which he must 
 constantly refer. Probably of all the engineers, he who follows 
 mining has the most widely varying problems to solve. Each 
 new one that presents itself requires thorough study and the 
 bringing to* bear upon 1 it of all the data that can be found. If 
 a mining engineer is called upon to report on a mine, he will be 
 aided if he can find descriptions written by some previous in- 
 vestigator. Too often, however, the information that is wanted 
 is just the information that cannot be found. Public and private 
 libraries have on their sh-elves an enormous amount of material 
 that should be available with the least loss of time. Many 
 methods of indexing have been used, based often on alphabetical 
 order. The trouble with an alphabetical arrangement is that it 
 is difficult to pick from the titles of many books the word the 
 initial letter of \vhich should determine its place in the alpha- 
 betical list. With an alphabetical shelf arrangement, a book on 
 
 245458 
 

 SCHOOL OF MINES. 
 
 ''Child Study" might come next to one on "Chilian Mills," and 
 one on "Grinding Machines" would be placed considerably 
 farther along. To overcome these difficulties, most libraries now 
 use what is known as the "Decimal Classification and Relative 
 Index," called the "Dewey Decimal System." As its name indi- 
 cates, this system is a numerical one. Each subject is given a 
 number, and the shelf arrangement, being by number, brings 
 similar subjects together. All knowledge that is, we might 
 say, all reading matter is divided into ten classes, as follows : 
 
 General Works. 
 
 1 Philosophy. 
 
 2 Religion. 
 
 3 Sociology. 
 
 4 Philology. 
 
 5 Natural Science. 
 
 6 Useful Arts. 
 
 7 Fine Arts. 
 
 8 Literature. 
 
 9 History. 
 
 These classes are divided into divisions. Number 6, or 
 ''Useful Arts," is subdivided as follows : 
 
 610. Medicine. 
 
 620. Engineering. 
 630. Agriculture. 
 
 640. Domestic Economy. 
 
 650. Communication and Commerce. 
 
 660. Chemical Technology. 
 
 670. Manufactures. 
 
 680. Mechanic Trades. 
 
 690. Building. 
 
 These divisions are again subdivided into sections, and num- 
 ber 620, or "Engineering," is divided as follows : 
 
 621. Mechanical Engineering. 
 
 622. Mining Engineering. 
 
 623. Military. 
 
 624. Bridge and Roof. 
 
 625. Road and Railroad. 
 
 626. Canal. 
 
 627. River and Harbor.. 
 
THE COLORADO SCHOOL OF MINES. 5 
 
 : 628. Sanitary. Water Works. 
 629. Other Branches. 
 
 "Mining Engineering" has the number 622, and books or 
 articles numbered 622 would be placed on the shelf between those 
 numbered 621 and those numbered 623. As can readily be seen, 
 this subdivision can be carried as far as desired. In the original 
 classification it was carried to five figures, as is given on page, 
 ir, and for a general library this is sufficient. For the library 
 of a mining man, however, it is not enough. For example, it 
 will be noted that 622.69 is "Surface Transportation." The 
 average mining engineer will accumulate too many articles that 
 would be classed under "Surface Transportation," but yet would 
 be different; as, for instance, "Aerial Tramways" and "Wagon 
 Roads." Hence, a further extension or subdivision is necessary, 
 and this extension has been carried out in this bulletin. 
 
 The principle of the system has been explained in order 
 that a better understanding of its application may be gained. 
 Never was there the wealth of valuable information to be found 
 in technical books and periodicals as at the present time. Every 
 engineer must have some system of making available the infor- 
 mation that he may want at any time, and the "Dewey System" 
 is probably the only scheme that has stood the test. At the Uni- 
 versity of Illinois the effectiveness of the system has been tried 
 in the Engineering College and has been found thoroughly satis- 
 factory. If engineers will take the small amount of trouble 
 necessary to become familiar with the system they will find it 
 well adopted to their needs, and it will make available a large 
 amount of technical literature that would otherwise be lost. 
 
 APPLICATION OF THE SYSTEM. 
 
 There are three ways in which the classification may be used 
 by engineers. First, by a card index ; second, in filing articles 
 and clippings without an index; and, third, in a combination of 
 the two or filing away the material according to the' decimal 
 system, with a card index arranged either alphabetically or ac- 
 cording to the "Dewey System." As to which of the three ways 
 is best, opinions differ; also, it depends on the extent of the 
 material to be indexed. 
 
 CARD INDEX. 
 
 Many engineers use a card index arranged alphabetically. 
 If they notice an article on "Sinking and Timbering Shafts," they 
 
6 THE COLORADO SCHOOL OF MINES. 
 
 make out two cards, stating" the title, length and perhaps the 
 character of the article and where it may be found. One of these 
 cards will be placed in the drawer under "S" for "Shaft Sinking," 
 and one under "T" for "Timbering." The only difference, if the 
 decimal system of arrangement is employed, is that the cards, 
 after being made out, would be given proper numbers and, placed 
 in the drawer in their numerical order, would thus avoid the 
 weakness of any alphabetical arrangement. 
 
 The card index finds its best application when the user has 
 in his office only a few of the articles to which referenece is 
 made. The objections to it are two : First, there is usually 
 trouble in finding- the magazine in which the article occurs, and, 
 if the amount of material is large, the card index alone would 
 not be sufficient. Second, many engineers will not keep up a 
 card index. This is without doubt the most serious objection. 
 Its beneficial use and general adoption by large business con- 
 cerns has led many to believe that the card index alone is a 
 "panacea for all ills," but they should remember that these con- 
 cerns have competent and sufficient clerical help to keep the cards 
 up to date, an advantage which many engineers do not enjoy. 
 
 FILING MATERIAL WITHOUT AN INDEX. 
 
 As to the second way of using the classification that is, 
 for filing information without an index the following descrip- 
 tion of its adoption at the Colorado School of Mines will prob- 
 ably serve best to enable the reader to judge if it is applicable 
 to his requirements. The mining department has a case con- 
 taining a large number of pigeon holes 5" wide, 12" high and 
 14" deep, which are numbered according to the Dewey System, 
 622.11, 622.12, etc. When a new copy of the "Engineering and 
 Mining Journal" arrives it is read and then, by removing the 
 binding clips, the different articles it contains are taken out and 
 placed in their proper pigeon holes. That is, if there be an 
 article on "Timbering," it will be placed in number 622.2 along 
 with articles on "Timbering" that may be taken from "Mines and 
 Minerals," "Mining and Scientific Press," or "Mining Science." 
 Then when any information is desired on "Timbering," by going 
 to that pigeon hole we have all the latest information together. 
 If the 1 number of articles in the pigeon hole becomes great, they 
 are divided into their proper classes and placed in large envelopes 
 with the proper number on the outside. That is, envelope' num- 
 bered 622.281 would contain all the articles on "Kinds and 
 
THE COLORADO SCHOOL OP MINES. 7 
 
 Properties of Timber for Mine Use." If crowded for room, 
 envelopes could be used entirely, arranged in large drawers or 
 otherwise. Where an article might be classed under two head- 
 ings, it is placed where it has the most weight, and, if desired, 
 a reference to it on a blank sheet in the other pigeon hole can 
 be made. Also on the. blank sheet can be written references to 
 articles occurring in some book or paper which may be found 
 only in the library. As most strong articles occur in at least 
 two of the mining papers, very little cross referencing has been 
 found necessary. The article taken from one magazine is put 
 in one place, and from the other magazine in the other place. 
 This also often prevents losing one article, because part of it is 
 on the same sheet with another article, and, of course, the same 
 results would be secured by having more than one copy of the 
 same paper. Two advantages of the method are worthy of 
 mention : First, the articles are immediately available, and, 
 second, in case it is desired to take the information on a trip, it 
 can be done without having to take a complete bound volume. 
 
 BOTH CARD INDEX AND FILING. 
 
 The third way of using the "Dewey System" is really a com- 
 bination. Books and magazines are placed on the shelves in 
 their proper order numerically and a card index is maintained 
 referring to subjects to be found on the shelves or elsewhere. 
 Where there are many books and the- mass of material is large, 
 this is to be recommended. It is the method used in libraries 
 where only the card index is alphabetical for the use of the 
 public. 
 
 EXTENSION OF THE CLASSIFICATION. 
 
 In extending the classification, the aim has been towards 
 as logical a subdivision as possible. The original classification, 
 although imperfect, has not been changed. This is because oi 
 the copyright restrictions; also, because of the reverence for 
 the master mind that evolved the entire subdivision of all knowl- 
 edge. The imperfections can be seen in the subdivision of 
 "Drainage," but to attempt to chan.ee it would be inadvisable, be- 
 cause so many have already adopted it. The original subdivision 
 is printed separately, so that it may be torn out and posted near 
 the filing case. For placing many articles this will suffice and 
 will save many references to the extended classification. 
 
 In order to cover the ground of mining fully it was neces- 
 sary to go into Geology and Mechanical Engineering, and the 
 
8 THE COLORADO SCHOOL OF MINES. 
 
 subjects coming under those divisions that are found in the min- 
 ing engineer's library) have been put in. Those on Mechanical 
 Engineering were taken from Bulletin No. 9 of the University 
 of Illinois, which is an extension of that subject. Nothing has 
 been put in on Metallurgy and Assaying. A bulletin covering 
 the extension on these subjects has already been issued by the 
 Colorado School of Mines, and copies may be obtained from 
 the President of the school. 
 
 FORM DISTINCTIONS. 
 
 In the application of the "Dewey System" it has been found 
 useful to employ a series of form distinctions or divisions. The 
 literature of any subject may often be advantageously separated 
 into these subdivisions, which are as follows : 
 
 .001. Statistics. . 
 
 .002. Quantities and costs. 
 
 .003. Contracts and specifications. 
 
 .004. Designs and drawings. Maps. 
 
 .005. Executive. 
 
 .006. Working and maintenance. 
 
 .007. Laws. 
 
 .008. Patents. Machinery. 
 
 .009. Reports. 
 
 .01. Philosophy or theory. 
 
 .02. Compends. Indices. Directories. 
 
 .03. Cyclopedias. Dictionaries. 
 
 .04. Essays. Address. Letters. Theses. 
 
 .05. Periodicals. Magazines. 
 
 .06. Societies. 
 
 .07. Education. Study and teaching. 
 
 .08. Tables and calculations. 
 
 .09. History. Progress and development. 
 
 These form distinctions may be used not only to subdivide 
 general subjects, as is done for 622 on page 25, but they can 
 also be used for the minor subdivisions, as, for example, 
 622.141.09 would be the history of mine surveying instruments. 
 
 ALPHABETICAL SUBDIVISION. 
 
 The use of an alphabetical arrangement for minute sub- 
 divisions may sometimes be used to advantage, as has been done 
 for mines and mining districts on page 33. This is by no 
 
THE COLORADO SCHOOL OF MINES. g 
 
 means an alteration of the Dewey System, but one that is indi- 
 cated in his book, and for this particular case is the only logical 
 arrangement. 
 
 RELATIVE INDEX. 
 
 The second part of the bulletin consists of the relative in- 
 dex, which is merely a finding list where the subjects or headings 
 are arranged alphabetically and the proper number is given. The 
 placing of a period after every three figures in a number is 
 simply for convenience in reading. The first three figures for 
 mining engineering are always 622, and may be replaced by a 
 letter or sign if desired.. 
 
 ACKNOWLEDGMENTS. 
 
 In preparing this work the writer has referred without hesi- 
 tation to th^ indices or the subject matter of the available books 
 on mining. Acknowledgments are due to Victor C. Alderson, 
 President of the Colorado School of Mines, and to Miss Mabel 
 Shrum, Librarian, for their kindly assistance in correcting manu- 
 script ; to George W. Schneider, for his extension of "Mine Ac- 
 counting," "Hoisting," and "Transportation," and to Miss Ella J. 
 Colburn for her painstaking assistance in preparing the material 
 for the printer. 
 
 GOLDEN, COLORADO, August 20, 1912. 
 
THE COLORADO SCHOOL OF MINES. n 
 
 Original Classification 
 
 (Subjects in italics have been added) 
 
 622. Mining Engineering 
 
 (See also 338.2, Mining products.) 
 May be subdivided like 620 and 620.0; e. g. Socie- 
 ties, 622.06; Reports, 622.009. 
 
 .1 Exploration and prospecting. 
 
 .11 Theory. Applied geology, etc. 
 
 .12 Prospecting. Practical methods. 
 
 Including Divining Rods. 
 
 .13 Mineral surveys. 
 
 .14 Mine surveying. 
 
 .15 Magnetic surveys. 
 
 .16 Theory of -faults (See 551.87 and 553.19). 
 
 .17 Valuation of mines. Sampling. 
 
 .18 Mines and mining districts. 
 
 .19 Mining prospectuses. Photography in mining. 
 (See 553.) 
 
 .2 Practical mining. 
 
 .21 Excavation. 
 
 .22 Quarrying. 
 
 .23 Drilling and blasting. 
 
 .24 Deep boring. 
 
 .25 Shaft sinking. 
 
 .26 Tunneling and drifting. 
 
 .27 Stoping. 
 
 .28 Timbering and mine support. Masonry lining. 
 
 (See also 622.56.) 
 
 .29 Handling and erecting machinery. Founda- 
 
 tions. 
 
12 THE COLORADO SCHOOL OF MINES. 
 
 622.3 Working of mines. Exploration. 
 
 .31 Open workings. 
 
 .32 Hydraulic mining and sluicing. Dredging. 
 
 .33 Coal mining. -(See 553.2.) 
 
 .34 Metal mining. Development. (See 533.3 and .4.) 
 
 .35 Working thick deposits. 
 
 .36 Salt mining. (See 553.63.) 
 
 .37 Submarine mining. 
 
 .38 Gem mining. 
 
 .39 Mining miscellaneous minerals. 
 
 .4 Ventilation and lighting of mines. 
 
 .41 Theory. Gases m-t with, etc. 
 
 .42 Natural ventilation. 
 
 .43 Furnaces, steam jets, etc. 
 
 .44 Fans. (See 621.62.) 
 
 .45 Airways. Stoppings. Regulators. 
 
 .46 Measurement of ventilation. Temperature. 
 
 Humidity, 
 
 .47 Lighting. Safety lamps, etc. 
 
 .48 Coal dust. 
 
 .49 Miscellaneous. 
 
 .5 Drainage. 
 
 .51 Theory of infiltration of water. 
 
 .52 Natural drainage. 
 
 .53 Cornish pumps. (See 621.64.) 
 
 .54 Steam pumps. (See 621.64.) 
 
 .55 Hoisting of water. 
 
 .56 Dams and water-tight linings. (See also 
 
 622.28, Timbering.) 
 
 .57 Acid waters. Mine waters. 
 
 .58 Underground drainage systems. Piping. 
 
 .59 Drainage districts. 
 
THE COLORADO SCHOOL OF MINES. 13 
 
 622.6 Extraction. Hoisting and transportation. 
 
 .61 Handling mineral in working place. 
 
 .62 Underground roads. 
 
 .63 Mine cars. Trams, etc. 
 
 .64 Gravity roads and planes. 
 
 .65 Tramming and animal haulage. (See 625.7.) 
 
 .66 Mechanical haulage. 
 
 .67 Hoisting engines. Drums. Ropes. 
 
 .68 Cages! Skips. Buckets. 
 
 .69 Surface transportation. 
 
 Including Mineral Roads, Wire Rope-ways. Tran- 
 shipment, Loading and Unloading, etc. 
 
 .7 Mechanical preparation. Ore dressing. 
 
 .71 Theory. Preliminary operations. 
 
 .72 Hand dressing. 
 
 .73 Crushing. Stamping engine. 
 
 .74 Screening. Classification. 
 
 75 Jigging- O re concentrators. 
 
 .76 Slime treatment. Flotation. 
 
 .77 Magnetic separation. 
 
 .78 Coal washing. 
 
 .79 Dressing works. 
 
 .8 Dangers and accidents. Sociology. 
 
 (See also 613.6, Hygiene; 331.82, Laboring classes.) 
 
 .81 Explosions of fire-damp. 
 
 .82 Mine fires. 
 
 .83 Crushing and fall of ground. 
 
 .84 Flooding of mines. 
 
 .85 Accidents to miners. 
 
 .86 Rescue and relief. 
 
 .87 Inspection of mines. Mine bureaus and labora- 
 
 tories. 
 
 Health and care of zvorkmen. Institutions for 
 miners. 
 
I 4 THE COLORADO SCHOOL OF MINES. 
 
 622.89 Miners customs and life. Miners and mining 
 
 men. 
 
 .9 Mine economics. Accounting. Miscellaneous. 
 
 .91 Mine investments. Stocks and stockholders. 
 
 (See 332.) 
 
 .92 Management of mines. 
 
 93 Organized labor. (See 331.87.) 
 
 .94 Contract systems and leasing. Ore purchasing. 
 
 .95 Mine accounts. Bookkeeping. (See 657.) 
 
 .96 Systems for keeping mine notes. Recording 
 
 engineering and geological data. 
 
 .97 Taxation. Insurance. (See 336.2 and 725-23-) 
 
 .98 .Miscellaneous 'data on business side of mining. 
 
 .99 Unclassified data on mining in general. 
 
 EXTENDED CLASSIFICATION, 
 
 510. Mathematics. 
 
 520. Astronomy. 
 
 526. Geodesy. 
 
 530. Physics. 
 
 531. Mechanics. 
 
 532. Liquids. Hydrostatics. Hydraulics. 
 
 533. Gases. / Pneumatics. 
 540. Chemistry. 
 
 548. Crystallography. 
 
 549. Mineralogy. 
 
 550. Geology. 
 
 551. Physical and Dynamical Geology. 
 
THE COLORADO SCHOOL OF MINES. i = 
 
 551.1 Structure of earth as a whole. 
 
 .3 Erosion and deposition. 
 
 .5 Meteorology. 
 
 .6 Metamorphism. 
 
 .7 Stratigraphical geology (Archean, Cambrian, etc.) 
 
 .8 Structural geology. 
 
 .81 Stratification. 
 
 .84 Joints. Cleavage. Polarity in rocks. 
 
 .85 Dip. Outcrop. Strike. 
 
 .88 . Veins. Dykes. Necks. Bosses. 
 
 .9 AgentS of geological WOrk (Frost, Water, etc.) 
 
 552. Lithology. Petrography. Petrology. 
 
 553. Economic Geology. 
 .1 Ore deposits. 
 
 .11 Formation and structure. 
 
 . -in Syngenetic deposits or contemporaneous with coun- 
 try rocks. 
 
 .1 Magmatic segregations. 
 
 .2 Deposits of sedimentary origin. 
 
 .112 Epigenetic deposits or formed after country rocks. 
 
 i Deposits from magmatic emanations. 
 
 .2 Contact metamorphic deposits. 
 
 .113 Precipitation of metal from solution. 
 
 .114 Replacement 
 
 .115 Secondary enrichment. 
 
 .116 Ore shoots. 
 
 .12 Classification. 
 
 .13 Superficial. Placers. 
 
 .14 Stratified. Beds, etc. 
 
 .15 Unstratified. 
 
16 THE COLORADO SCHOOL OF MINES. 
 
 553.16 Disseminated through country rock. 
 
 .17 Stockwerks. Fahlbands. Contacts. 
 
 .18 Chambers and Pockets. Impregnations. 
 
 .19 Mineral veins. 
 
 .2 Carbon series. 
 
 (Note Under the following headings should be placed 
 data on the occurrence, origin, production, uses, 
 value," market, etc., as this is the only place where 
 the minerals are classified and separated.) 
 
 .21 Peat. 
 
 .22 Lignite and jet. 
 
 .23 Cannel coal. Bituminous shale. 
 
 .24 Bituminous and semi-bituminous coals. 
 
 .241 Coking coals. 
 
 .242 Non-coking coals. 
 
 .25 Anthracite and graphitic anthracite. 
 
 .26 Graphite. Plumbago. N'atural coke. Carbo- 
 nite. 
 
 .27 Asphalt and asphaltic coals. Ozocerite. 
 
 .271 Albertite. 
 
 .272 Ozocerite. 
 
 .273 Grahamite. 
 
 .274 Uintaite or gilsonite. 
 
 .275 Maltha. 
 
 .276 Asphalt. 
 
 .28 Petroleum. Natural gas. 
 
 .29 Fossil gums and resins. 
 
 .3 Ores of iron. 
 
 .31 Hematite. 
 
 .32 M,aignetite. 
 
 .33 Limonite. 
 
 .34 Gossan deposits. 
 
THE COLORADO SCHOOL QF MINES. 17 
 
 1.4 
 
 Ores of metals other than iron. 
 
 41 
 
 Ores of gold. 
 
 .42 
 
 Ores of silver. 
 
 43 
 
 Ores of copper. 
 
 44 
 
 Ores of lead. 
 
 45 
 
 Ores of zinc and tin. Mercury. 
 
 451 
 
 Zinc. 
 
 452 
 
 Tin. 
 
 453 
 
 Mercury. 
 
 .46 
 
 Ores of manganese and chromium 
 
 .461 
 
 Manganese. 
 
 .462 
 
 Chromium. 
 
 47 
 
 Ores of antimony and arsenic. 
 
 471 
 
 Antimony. 
 
 .472 
 
 Arsenic. 
 
 .48 
 
 Ores of nickel and cobalt. 
 
 .481 
 
 Nickel. 
 
 .482 
 
 Cobalt. 
 
 49 
 
 Other metallic ores. 
 
 .491 
 
 Ores of miscellaneous common metals 
 
 .1 
 
 Aluminum. 
 
 .2 
 
 Platinum. 
 
 3 
 
 Bismuth. 
 
 4 
 
 Cadmium. 
 
 5 
 
 Molybdenum. 
 
 .6 
 
 
 7 
 
 
 .8 
 
 
 9 
 
 
 .492 
 
 Ores of rare metals. 
 
 .1 
 
 Palladium. 
 
 .2 
 
 Osmium. 
 
 3 
 
 Iridium. 
 
 4 
 
 Titanium. 
 
 5 
 
 Uranium. 
 
 .6 
 
 Vanadium. 
 
 7 
 
 Tungsten. 
 
 .8 
 
 Radium. 
 
 9 
 
 Others. 
 
i8 
 
 THE COLORADO SCHOOL OF MINES. 
 
 .5 
 
 Building stones. 
 
 1 
 
 5 1 
 
 Marbles and limestones. 
 
 
 52 
 
 Granites and syenites. 
 
 
 53 
 
 Sandstones. 
 
 
 54 
 
 Slates. 
 
 
 55 
 
 Serpentines. Soapst ernes 
 
 
 56 
 
 Porphyries. 
 
 
 57 
 
 Trap. 
 
 
 58 
 
 Tufa. Ptperino. 
 
 
 59 
 
 Other building- stones. 
 
 
 .6 
 
 Earthy economic minera 
 
 Is. 
 
 .61 
 
 Fire clays. Brick clays. 
 
 Potter's clays. 
 
 .611 
 
 Kaolins. 
 
 
 .612 
 
 Brick and tile clays. 
 
 
 .613 
 
 Pottery clays. 
 
 
 .614 
 
 Fire clays. 
 
 
 .62 
 
 Sands. 
 
 
 .621 
 
 Foundry sands. 
 
 
 .622 
 
 Glass sands. 
 
 
 63 
 
 Rock salt. Gypsum. Other salines, etc. 
 
 .631 
 
 Salt. 
 
 
 .632 
 
 Bromine. 
 
 
 .633 
 
 Sodium sulphate.. 
 
 
 -634 
 
 Sodium carbonate. 
 
 
 .635 
 
 Soda niter. 
 
 
 .636 
 
 Borax. 
 
 
 .637 
 
 Iodine. 
 
 
 
 .638 
 
 Gypsum. 
 
 
 639 
 
 Others. 
 
 
 .64 
 
 Phosphates. Apatite. 
 
 Guano. Greensand. 
 
 
 (See also 631.) 
 
 
 .641 
 
 Phosphate of lime. 
 
 
 .642 
 
 Apatite. 
 
 
 .643 
 
 Amorphous phosphates. 
 
 
 .6 44 
 
 Guano. 
 
 
 645 
 
 Greensand. 
 
 
THE -COLORADO SCHOOL OF. MINES 
 
 553.65 Emery. Other abrasives, 
 
 .651 Millstones and buhrstones. 
 
 .652 Whetstones and oilstones. 
 
 .653 Pumice and volcanic ash. 
 
 .654 Diatomaceous earth. 
 
 .655 Crystalline quart/:. 
 
 .656 Feldspar. 
 
 .657 Garnets. (See also 553-8). 
 
 .658 Corundum and emery. 
 
 .659 Other abrasives. 
 
 .66 Heavy Spar. Sulphur. 
 
 .661 Heavy spar or barite. 
 
 .662 Sulphur. 
 
 .663 Fluorspar. 
 
 .664 Fuller's earth. 
 
 .665 Diatomaceous earth. (See also 553-65-0 
 
 .666 
 
 .67 Asbestos. Magnesite. 
 
 ..671 Asbestos. 
 
 .672 Magnesite. 
 
 .68 Limes, and mineral cements. 
 
 .681 Limestones. 
 
 .682 Hydraulic cements. 
 
 .683 Pozzuolan cement. 
 
 .684 Hydraulic limes. 
 
 685 Natural rock cement?. 
 
 .686 Portland cements. 
 
 .687 
 
 .69 Other earthy economic minerals 
 
 .691 Monazite. 
 
 .692 Lithium. 
 
 .693 Meerschaum. 
 
 .694 Mica. 
 
 .695 Ocher. 
 
 .696 Lithographic stone. 
 
 .697 
 
 .7 Mineral waters. 
 
20 THE COLORADO SCHOOL OF MINES. 
 
 553.8 
 
 Gems. Ornamental 
 
 .81 
 
 Diamonds. 
 
 .82 
 
 Corundum gems. 
 
 .821 
 
 Ruby. 
 
 .822 
 
 Sapphire. 
 
 .823 
 
 
 83 
 
 Beryl gems. 
 
 -831 
 
 Emerald. 
 
 .832 
 
 Aquamarine. 
 
 -833 
 
 Morganite. 
 
 '84 
 
 Pearl. 
 
 85 
 
 Opal.- 
 
 .86 
 
 Turquoise (matrix) 
 
 .87 
 
 Tourmaline gems. 
 
 .871 
 
 Rubellite. 
 
 .872 
 
 Indicolite. 
 
 .88 
 
 Quartz gems. 
 
 .881 
 
 Amethyst, prase. 
 
 .882 
 
 Jasper. 
 
 .883 
 
 Rose quartz. 
 
 .884 
 
 Onyx. 
 
 .885 
 
 Agate. 
 
 .886 
 
 Bloodstone. 
 
 .887 
 
 Chrysoprase. 
 
 .888 
 
 Sardonyx. 
 
 .889 
 
 Carnelian and others. 
 
 .89 
 
 Miscellaneous gems. 
 
 .891 
 
 Peridot. 
 
 ,892 
 
 Topaz. 
 
 .893 
 
 Garnet. 
 
 .894 
 
 Moonstone. 
 
 .895 
 
 Alexandrite. 
 
 .896 
 
 Cymophane. 
 
 -897 
 
 Hiddenite. 
 
 . .898 
 
 Kunzite. 
 
 .899 
 
 Jade and others. 
 
 .9 
 
 Other economic mine 
 
THE COLORADO SCHOOL OI< .MINES. 21 
 
 620. Engineering. 
 
 620.1 Strength of materials. 
 
 .13 Properties and tests of stone, concrete, cement, 
 
 etc. 
 
 621. Mechanical Engineering, 
 
 .1 Steam engineering. 
 
 .10 Power plants. Central stations. 
 
 . 1 1 Mechanism of the steam engine. Design of en- 
 
 gine parts. 
 
 .115 Governors. 
 
 .116 Valves and valve gears. 
 
 .13 Locomotives. 
 
 .132 Types of locomotives. 
 
 .14 Traction engines (agricultural, road roller, 
 
 etc.). 
 
 .15 Portable engines. 
 
 .16 Stationary engines. 
 
 .17 Steam economy. 
 
 .171 Instruments and apparatus used in boiler and engine 
 
 tests. Indicators, counters, dynamometers, gages, 
 etc. 
 
 .172 Records and results of engine tests. Measurement 
 
 of power; efficiency, engine friction, etc. 
 
 .173 Records and results of tests on miscellaneous steam 
 
 apparatus. 
 
 .174 Theory: Expansion, superheating, cylinder conden- 
 
 sation, jacketing, etc. (See also 536.73). 
 
 .175 Condensers and cooling towers. 
 
 .176 Injectors and ejectors. 
 
 .177 Steam separators. 
 
 .178 Accidents, engine failures, fly-wheel failures, boiler 
 
 explosions. 
 
 .179 Management of engines and boilers, engine rooms, 
 
 boiler rooms, etc. 
 
THE COLORADO SCHOOL OF MINES. 
 
 621.18 Steam generation. Boilers. Furnaces. 
 
 .182 Fuels. Comparative efficiency of. 
 
 .183 Boiler fittings. Safety valves,, water gages, cock: 
 
 manholes, etc. 
 
 ..184 Furnace fittings. Appliances connected with combus 
 tion of fuel. 
 
 .1 Mechanical stokers. 
 
 .2 Forced draft apparatus. 
 
 .3 Chimneys. 
 
 .4 Smoke consumption and prevention. 
 
 .5 Oil feed apparatus, burners, etc. 
 
 .6 Coal and ash conveyors. 
 
 .9 Miscellaneous appliances. 
 
 .185 Construction and setting of boilers. 
 
 .186 Steam transmission and distribution. 
 
 .19 Steam heating. (See 697.) 
 
 621.2 Water engines or motors. 
 
 .2! Water wheels. Impulse. 
 
 .22 Overshot and breast wheel. 
 
 .23 Undershot wheel. 
 
 .24 Turbines. 
 
 .27 Hydraulic ram. 
 
 .28 Hydraulic machinery. 
 
 621.3 Electrical engineering. 
 
 .31 Generation of electricity. 
 
 .311 Central stations. 
 
 .312 Dynamo electric machines. 
 
 .312.1 Theory. 
 
 .2 General types and description. 
 
 .3 Comrtiutating machines. 
 
 .342 Constant speed motors. 
 
 .343 Multispeed motors. 
 
 .344 Adjustable speed motors. 
 
 .345 Varying speed motors (railway motors). 
 
 .4 Synchronous machines. 
 
 .43 Alternating current generators. 
 
 .6 Asynchronous machines. 
 
 .63 Induction generators. 
 
THE COLORADO SCHOOL OF MINES. 23 
 
 621.312.64 Induction motors. 
 
 .65 Series alternating current motors. 
 
 .66 Repulsion motors. 
 
 313 Stationary induction apparatus. 
 .3 Transformers. 
 
 .4 Auto transformers. 
 
 314 Electrostatic apparatus. 
 
 317 Switchboards and control devices. 
 
 .32 Electric lighting. 
 
 .33 Electric traction. 
 
 331 Systems. 
 Trunk. 
 
 .3 Interurban. 
 
 34 Transmission of electrical energy. 
 
 35 Electrical processes. Storage of electricity 
 .36 Telegraph and telephones. 
 
 361 Pole lines. 
 
 .365 Telephone systems. 
 
 366 Telephone instruments. 
 
 .37 Instruments and meters. 
 
 39 Industrial applications of electricity. 
 
 391 General. 
 
 .392 Electricity applied to agriculture. 
 
 393 Electricity applied to mining. 
 
 .4 Air and gas engines and other motors. 
 
 .41 Hot air engines. 
 
 .42 Compressed air engines. 
 
 .43 Ignited gas or oil engines. 
 
 43 1 General theory of gas. gasolene, or oil engines 
 
 .434 Diesel motor. 
 
 436 Gas producers, 
 
 .5 Air compression. Ice machines. Refrigerators 
 
 .51 Dry air compressors. 
 
 .52 Wet air compressors. 
 
 .53 Compressed air transmission and distribution 
 
24 THE COLORADO SCHOOL OF MINES. 
 
 621.7 Manufactories. Engineering works. is 
 
 .702 Arrangements of shops. Shop buildings. 
 
 .71 . Machine shop. 
 
 .72 Foundry. 
 
 .73 Forge shop. 
 
 .74 Woodworking shop. Pattern shop. 
 
 .8 Millwork and machinery of transmission. 
 Design of machinery parts. 
 
 .82 Journals, shafting, etc. 
 
 .87 Cranes and elevators. 
 
 .89 Lubricants. Friction. 
 
 .9 Machine tools. 
 
 .91 Planing machines. 
 
 .911 Metal planers, shapers, and slotters. 
 
 .912 Wood planing machinery. 
 
 .92 Grinding and filing. 
 
 .93 Cutting and sawing. 
 
 .931 Metal sawing and cutting machinery. 
 
 .932 Wood sawing machinery. 
 
 .94 Turning" and milling. 
 
 .944 Pipe threading machines. 
 
 .95 Perforating machinery. Drills. 
 
 .96 Punching and shearing machinery. 
 
 .97 Hammers. Nail and rivet machinery 
 
 .98 Bending, straightening and shaping. 
 
 622. Mining Engineering. 
 
 622.01 Theory or philosophy of mining. 
 
 622.02 Mining compends, indices, directories 
 
 622.03 Mining cyclopedias, dictionaries, hand book 
 
THE COLORADO SCHOOL OF MINES. 
 
 622.04 
 644:05 
 622.06 
 622.07 
 622.08 
 622.09 
 
 622.001 
 622.002 
 622.003 
 622.004 
 622.005 
 622.006 
 622.007 
 622.008 
 622.009 
 
 Mining essays, addresses, letters, theses. 
 'Mining periodicals, magazines. 
 Mining societies. 
 
 Mining education, study, teaching. 
 Tables and calculations for mining. 
 
 Mining history. Progress and development of 
 mining. 
 
 Mining- statistics. Mineral industry. 
 
 Mining quantities and costs. 
 
 Mining contracts and specifications. 
 
 Mining designs and drawings. Mining maps 
 
 Mining executive. 
 
 Working and maintenance. 
 
 Mining laws. 
 
 Mining patents. Mining machinery. 
 
 Mining reports. Examinations. Investigations 
 
 622.1 Exploration and prospecting. 
 
 622.11 Theory. Applied geology, etc. 
 
 .in Types and general geology of ore deposits. (See 
 
 also 553). 
 
 .112 Mineralized areas. Descriptions. 
 
 .113 Origin of float. Theory of placer formation. 
 
 .1 Stream placers. 
 
 Bench placers. 
 
 Beach placers. 
 
 Bar placers. 
 
 Buried placers. 
 
 Theory of nuggets. 
 .7 Cemented placers. 
 
 .114 Theory of prospecting. Scientific prospecting. 
 
 .115 Influence of topography in prospecting. Canons 
 
 coulees. 
 .116 Influence of vegetation in prospecting. 
 
THE -'COLORADO SCHOOL OF MINES: 
 
 622.12 Prospecting. Practical methods, including di- 
 vining rods. 
 
 .121 Prospecting outfits. 
 
 .1 Prospecting outfits for frigid countries. 
 
 . Prospecting outfits for tropical countries. 
 
 .3 Animals, saddles, tents, beds, for prospecting 
 
 .4 Cooking utensils, food supplies, medicines. 
 
 .5 Camping out. Pitching tent. Packing. 
 .6 
 
 .122 Practical methods of field prospecting. 
 
 .1 Panning and sluicing. 
 
 .2 Trenching and test pits. 
 
 .3 Prospecting by cross-cuts and drifts. 
 
 .4 Prospecting by shafts. 
 
 -5 
 
 .6 Prospecting by drilling. (Sec also 622.33.) 
 
 .123 Testing devices and tools used in prospecting: 
 
 .1 Dipping needles. Divining rods. 
 
 .2 Magnetometer. 
 
 .3 Swedish mining compass. 
 
 .4 Chemical tests for gold. 
 
 .41 Stannous chloride method. 
 
 .42 Iodine or bromine method. 
 
 .5 Fire tests for gold. 
 
 .51 Blowpiping. Blowpiping outfits. 
 
 .52 Portable assay outfits. 
 
 .521 Pocket smelters. 
 
 .6 Pan, batea, horn spoon, rocker, sluice. 
 
 .7 Picks, shovels, drills. 
 
 .8 
 
 9 
 
 .124 Underground prospecting. 
 
 125 Acquiring mineral lands in the United States. 
 
 .1 Public mineral lands and forest reserves. 
 
 .2 Private lands. Land grants. 
 Government land subdivisions. 
 Acquiring lode claims. 
 
 .5 Acquiring placer lands. 
 
 .6 Acquiring tunnel and mill sites. 
 
 .7 Acquiring coal lands. Timber and stone lands. 
 
 .8 Acquiring water rights. 
 
 .9 Miscellaneous. 
 
 .126 Acquiring mineral lands in Canada. 
 
 .127 Acquiring mineral lands in Mexico. 
 
THE COLORADO SCHOOL OF MINES. 
 
 622.128 Acquiring mineral lands in other countries. 
 
 (Note. Acquiring mineral lands in other coun 
 tries may be placed as laws of the countries and 
 placed under 622.18. Mines and Mining Districts.) 
 
 .129 Miscellaneous. 
 
 622.13 Mineral surveys. 
 
 .131 Preliminary or location surveys. 
 
 .1 Conditions governing location of mining lands 
 
 .2 Size and shape of lode claims. 
 
 .3 Size and shape of placer claims. 
 
 .4 Size and shape of tunnel sites. 
 
 .5 Size and shape of mill sites. 
 
 .6 Preparing and filing location certificates. 
 
 .7 General requirements of survey. 
 
 .8 
 
 9 
 
 .132 Final or patent surveys. 
 
 .1 Conditions governing patent surveys. 
 
 .2 Methods of using instruments and measuring. 
 
 .3 Field methods and adjustment of claim. 
 
 .4 Tieing in claims. 
 
 .5 Field notes. 
 
 .6 Amended surveys. 
 
 .7 Adverse surveys. 
 
 .8 
 
 9 
 
 .133 Mineral surveys in Canada. 
 
 .134 Mineral surveys in Mexico. 
 
 .135 Mineral surveys in other countries. (See note un- 
 der 622.128). 
 .136 
 -137 
 
 622.14 Mine surveying. 
 
 .141 Instruments for mine surveying. 
 
 .1 Compasses. Pocket Transits. 
 
 .2 ' Theodolites and transits. 
 
 .3 Levels. 
 
 .4 Chains and tapes. 
 
 .5 Tripod sights. Stations. 
 .6 
 
 .7 Adjustment of instruments. 
 
 .8 Repair of instruments. 
 9 
 
28 THE COLORADO SCHOOL OF MINES. 
 
 622.142 Surface surveys and traverses. 
 
 .1 Determination of meridian. 
 
 .11 From polaris. 
 
 .12 With solar attachments. 
 
 .13 By direct observation of sun. 
 
 .14 By equal altitudes of stars. 
 
 .15 Other methods. 
 
 .2 Surface traverses. 
 
 .3 Reservoir surveys. 
 
 .4 Ditch surveys. 
 
 .5 Surveys of pipe lines. 
 .6 
 
 .143 Carrying the meridian underground. 
 
 .1 By traverse on slope or level. 
 
 .2 By plumb lines in two or more shafts. 
 
 3 By plumb wires in one shaft. 
 
 .31 Two wire method. 
 
 .32 Three wire method. 
 
 33 Four wire method. 
 
 .4 Wires and weights. 
 
 .41 Size and kind of wires. 
 
 .42 Lowering wires. 
 
 .43 Weights. 
 
 .44 Suspending weights in fluid. 
 
 45 
 
 .5 Carrying meridian underground with auxiliary tele- 
 scope or special transit. 
 
 .6 
 
 7 
 
 .144 Survey of underground workings. 
 
 .1 Drifts and cross-cuts. Entries. 
 
 .2 Rooms, etc., in coal mines. 
 
 .3 Stopes. 
 
 .4 String surveys. 
 
 .5 Sights and stations. 
 
 .6 Illumination. 
 
 7 
 .8 
 
 9 
 
 .145 Record of surveys. 
 
 .1 Kinds and uses of field note-books'. 
 
 .2 Keeping field notes. 
 
 .21 Side notes. 
 
 .22 Sketches. 
 
 .3 Kinds and uses of office books. 
 
 .4 Calculation books. 
 
THE COLORADO SCHOOL OF MINES. 29 
 
 622.145.5 Loose-leaf books. 
 .6 
 7 
 
 .146 Maps of mine surveys. 
 
 .1 Kinds and uses of mine maps. 
 
 .11 Topographic maps. 
 
 .12 Geologic maps and sections. 
 
 .13 Assay maps. 
 
 .14 Maps of old workings. 
 
 .15 Plan maps. 
 
 .16 Elevation maps. Projections. 
 
 .17 Sectional maps. 
 
 .18 Maps for court work or litigation. 
 
 .19 Miscellaneous. 
 
 .2 Making mine maps. 
 
 .21 Papers. 
 
 .22 Scale and size. 
 
 .23 Instruments for mapping. 
 
 .24 Platting by angles and distances. 
 
 .25 Platting by latitudes and departures. 
 
 .26 Platting by parallel rule and protractor. 
 
 .27 Platting by tangents and chords. 
 
 .26 Coloring maps. Inks and colors. 
 
 .29 Prints and tracings. Miscellaneous. 
 
 .3 Filing mine maps. (See also 622.96.) 
 
 .31 Labeling and numbering maps. 
 
 .32 Filing maps in drawers. 
 
 33 Filing maps in frames. 
 
 34 Filing maps in books. 
 
 35 Filing maps on rollers. 
 
 147 Models of mines. 
 
 .1 Uses of mine models. 
 
 -II Working models. 
 
 .12 Models for stockholders. 
 
 .13 Court models. 
 
 .2 Kinds of mine models. 
 
 .21 Plate models. 
 
 .22 Skeleton models. 
 
 .23 Solid models. 
 .24 
 
 .3 Materials and methods of construction. 
 
 .31 Glass. 
 
 .32 Plaster of Paris. 
 
 33 Wood. 
 
 34 Cement. 
 
 35- Papier-mache. 
 
 .36 Wires and wire screens. 
 
30 THE COLORADO SCHOOL OF MINES. 
 
 622.147.37 
 4 
 5 
 
 .148 Special surveys. 
 
 .1 Surveys for connections. 
 
 .2 Surveys for bore holes. (See 622.247) 
 
 3 
 
 4 
 
 .149 Descriptions of survey methods at various mines 
 Miscellaneous. 
 
 622.15 Magnetic surveys. 
 
 151 
 
 152 
 
 153 
 
 622.16 Theory of faults. 
 
 .161 Formation of faults. 
 
 .1 Normal faults. 
 
 .2 Reverse faults. 
 
 .162 Locating faulted areas. 
 .163 
 .164 
 
 622.17 Valuation of mines. Sampling-. 
 
 .171 Valuation of surface equipment. 
 
 .1 Buildings. 
 
 .2 Shops. 
 
 .3 Head frames, ore bins, etc. 
 
 .4 Machinery and apparatus. 
 
 .5 Tools 
 
 .6 Supplies. 
 
 .7 Live stock. 
 .8 
 
 .9 Miscellaneous. 
 
 172 Valuation of underground equipment. 
 
 .1 Machinery . and apparatus. 
 
 .2 Tools. 
 
 . 13 Supplies. 
 
 .4 Live stock. 
 
 .5 Trackage 
 
 .6 Piping. 
 
 .7 Wiring. 
 .8 
 
 .9 Miscellaneous. 
 
THE COLORADO SCHOOL OF MINES. 31 
 
 622.173 Valuation of development work. 
 
 .1 Shafts and inclines. Stopes. 
 
 .2 Tunnels and adits. 
 
 .3 Drifts and crosscuts. Entries. 
 
 .4 Winzes and raises. 
 
 .5 Stations and pockets. 
 .6 
 7 
 
 .174 Sampling ore bodies. 
 
 .1 Spacing and size of mine samples. 
 
 .2 Blasting large samples. 
 
 .21 Mill-run samples. , 
 
 .3 Methods of taking groove samples. 
 
 .4 Sampling spotty breasts. 
 
 .5 Sampling dumps and stock piles. 
 
 .6 Sampling placer ground. , ; J 
 
 .61 By shafts. 
 
 .62 By bore holes. 
 
 .63 Location of samples. 
 
 .64 ; , 
 
 .65 , I 
 
 .7 Sampling coal seams. 
 
 .8 Sampling massive deposits by bore holes. 
 
 .9 Cutting and grinding samples. Miscellaneous. 
 
 .175 Valuation of ore bodies. 
 
 .1 Classification of ore bodies. , * 
 
 .11 Ore blocked out. 
 
 .12 Positive ore. 
 
 .13 Probable ore. 
 
 .14 Possible ore. 
 
 15 
 
 .2 Calculating amount and gross value of ore. 
 
 .21 Calculation of foot-ounces. 
 
 .22 Calculation of foot or inch-dollars 
 
 .23 Influence of ore shoots. 
 .24 
 25 
 
 .176 Economic factors in mine valuation. 
 
 .1 Treatment of ores. 
 
 .2 Labor. 
 
 3 Transportation. 
 
 .4 Timber. 
 
 5 Water. 
 
 .6 Government. 
 
 7 Climate. r 
 
 .8 - 
 
 9 Miscellaneous. 
 
32 THE COLORADO SCHOOL OF MINES. 
 
 622.177 Factors influencing probable future value- 
 
 .1 Previous production. 
 
 .2 History of neighboring mines. 
 
 .3 Geology. 
 
 4 
 
 5 
 
 .6 
 
 .178 
 179 
 
 622.18 Mines and mining districts. 
 
 .181 Famous mines of antiquity. 
 
 .182 Famous mines of modern times. 
 
 .183 
 
 .184 Mines and mining districts in Europe. 
 
 .1 Scotland. Ireland. 
 
 .2 England. Wales. 
 
 .3 Germany. Austria. 
 
 .4 France. - 
 
 5 Italy. 
 
 .6 Spain. Portugal. 
 
 .7 Russia. 
 
 .8 Norway, Sweden, Denmark. 
 
 .9 Mlinor countries. 
 
 .185 Mines and mining districts in Asia. 
 
 .1 China. 
 
 .2 Japan. 
 
 .3 Arabia. 
 
 .4 India. 
 
 .5 Persia. 
 
 .6 Turkey in Asia. 
 
 .7 Siberia. 
 
 .8 Turkestan. Afghanistan. Beloochistan. 
 
 .9 Minor cotmtries. 
 
 .186 Mines and mining districts in Africa. 
 
 .1 North Africa. 
 
 .2 Egypt. Nubia. 
 
 .3 Abyssinia. 
 
 .4 Morocco. 
 
 .5 Algeria. 
 
 .6 North Central Africa. 
 
 .7 South Central Africa. 
 
 f .8 South Africa. 
 
 .9 Madagascar. 
 
 .187 Mines and mining districts in North America. 
 
 .1 British America. 
 
THE COLORADO SCHOOL OF MINES. '33 
 
 622.187.2 Mexico. Central America. Other countries. 
 
 .3 United States. 
 
 .4 North Atlantic States. 
 
 .5 South Atlantic States 
 
 .6 South Central or Gulf States. 
 
 .7 Northeast Central or Lake States. 
 
 .8 West Central or Mountain States. 
 
 .9 Pacific States. 
 
 .188 Mines and mining districts in South America. 
 
 .1 Brazil. 
 
 .2 Argentine Republic. 
 
 .3 Chile. 
 
 .4 Bolivia. 
 
 .5 Peru. 
 
 .6 Colombia. Ecuador. 
 
 .7 Venezuela. 
 
 .8 Guiana. 
 
 .9 Paraguay. Uruguay. Other countries. 
 
 .189 Mines and mining districts in Oceanica. Polar region? 
 
 .1 Malaysia. 
 
 .2 Sunda. 
 
 .3 Australasia. 
 
 .4 Australia. 
 
 .5 New Guinea. 
 
 .6 Polynesia. 
 
 .7 Isolated Islands. 
 
 .8 Arctic Regions. 
 
 .9 Antarctic Regions. 
 
 Note. Further subdivision may be arranged alpha 
 betical or first divided into minerals and then sub- 
 divided according to alphabetical order. The pro- 
 duction of a mine or district, the mining regula- 
 tions, history or anything peculiar to a district, may 
 be filed under this subdivision. 
 
 622.19 Mining prospectuses. Photography in mining 
 
 (See 553-3.) 
 
 .191 Mining prospectuses. 
 
 .192 Photography in mining. 
 
 .1 Surface photography . 
 
 .2 Underground photography. 
 
 .193 Printing and reproduction of photographs. 
 
 .1 Half tones. 
 
 .2 Zinc etchings. 
 
34 THE COLORADO SCHOOL OF MINES. 
 
 622.2 Practical mining. 
 
 622.21 Excavation. 
 
 .211 Classification and measurement of materials 
 
 .1 Classification of materials. 
 
 .11 Earth. 
 
 .12 Hardpan. 
 
 .13 , Rock. 
 
 .14 Other classifications. 
 
 .2 Measurement of materials. 
 
 .21 Measuring materials in place. 
 
 .22 Measuring excavated materials. 
 
 .23 Methods of calculation. 
 
 .24 Earth shrinkage. 
 
 .25 Voids in broken stone. 
 
 .26 
 
 27 
 
 .212 Picking and shoveling. (See 622.313 and 622.321.1) 
 
 .1 Capacity of man picking. 
 
 .2 Capacity of man shoveling. 
 
 .3 Economical lifts and throws in shoveling. 
 
 .4 Kinds and use of picks. 
 
 .5 Kinds and use of shovels. 
 
 .6 
 
 7 
 
 .213 Plowing. 
 
 .1 Capacity of plow. 
 
 .2 Steam plows. 
 
 3 
 
 4 
 
 214 . Scrapers. 
 
 .1 Slips or drag scrapers. 
 
 .11 ... Capacity. 
 
 12 Economical lead. 
 
 .13 - . Organization of force. 
 
 .2 Fresnoes and bucks. 
 
 .3 Wheeled scrapers. 
 
 .4 Steam scrapers. 
 
 5 
 
 215 Elevating graders. 
 216- ........ Steam shovels. 
 
 ,i Construction. 
 
 ,2 Operation. 
 
 3 Capacities. 
 
 4 Repairing. 
 
THE COLORADO SCHOOL OF MINES. 35 
 
 622.216.5 Proper bank heights. 
 
 .6 Arrangement of tracks. 
 
 .217 Dredges, other than bucket-elevator. (See 622.316 
 
 and 622.325). 
 
 .1 Grad bucket dredges. 
 
 .11 Construction. 
 
 .12 Operation 
 
 .13 Capacities. 
 
 14 
 
 IS 
 
 .2 Suction dredges. 
 
 .218 Bucket elevator dredges. (See 622.326). 
 
 .219 Hydraulicking. Other methods. (See 622.322) 
 
 622.22 Quarrying-. 
 
 .221 Methods of quarrying rock. 
 
 .1 Quarrying squared rock. 
 
 .2 Quarrying rough and fragmental stone. 
 
 222 Implements for quarrying. 
 
 .1 Plug and feather. 
 
 .2 Mechanical picks. 
 
 .3 Channelers. 
 
 .4 Power saws. 
 
 5 
 6 
 7 
 
 622.23 Drilling- and blasting. 
 
 231 Drill steel, sharpening. 
 
 .1 Kind and sizes of hand drill steel. 
 
 .2 Kind and sizes of machine drill steel. 
 
 .3 Size and shapes of bits for hand work. 
 
 .4 Size and shape of bits for machine work. 
 
 .5 Sharpening and tempering drills. 
 
 .51 Hand sharpening and tempering. 
 
 .52 Machine sharpeners. 
 .6 
 
 7 
 
 232 Hand drills and drilling. 
 
 .1 Methods of hand drilling. 
 
 .11 Single hand. 
 
 .12 Double hand. 
 
 .13 Hand churn drill. 
 
 .2 Hand power drills. 
 
 .21 Jackson. 
 
 .22 Hand augers. 
 
36 THE COLORADO SCHOOL OF MINES. 
 
 622.233 Care and operation of machine drills accessories 
 
 .234 Piston or reciprocating machine drills. 
 
 .1 Tappet valve piston machines. 
 
 .11 Ingersoll-Rand. 
 
 .12 Rand Little Giant. 
 
 .13 Chicago Giant Rock drill. 
 
 .14 Sullivan Tappet valve drill. 
 
 .15 Taylor's Hbrsfield drill. 
 
 .16 Holman's Tappet drill. 
 
 .17 Stephen's Climax Tappet valve drill. 
 
 .18 Rio Tinto drill. 
 
 .19 Others. 
 
 .2 Air valve. 
 
 .21 Ingersoll-Eclipse. 
 
 .22 Rand Slugger. 
 
 .23 Konomax. 
 
 .24 Sullivan differential valve. 
 
 .25 Little Hardy. 
 
 .26 Stephen's Climax Imperial. 
 
 .27 Wood. 
 
 .28 McKiernan. 
 
 .29 Little Hercules and others. 
 
 .3 Auxiliary valve. 
 
 .31 Ingersoll-Sargeant drill. 
 
 .32 Holman Auxiliary Ball Valve drill. 
 
 .235 Hammer drills. 
 
 .1 Cradle mounted. 
 
 .11 Leyner. 
 
 .12 Leyner Rock Terrier. 
 
 .13 Stephen's Imperial hammer. 
 
 .14 Kimber. 
 
 .2 Air feed. 
 
 .21 Gordon. 
 
 .22 Murphy. 
 
 .23 Waugh. 
 
 .24 Little Wonder. 
 
 .25 Sullivan stoper. 
 
 .26 Ingersoll-Rand stoper. 
 
 .27 Leyner stoper. 
 .28 
 .29 
 
 .3 Hand air hammer drills. 
 
 .31 Murphy. 
 
 .32 Little Wonder. 
 
 .33 Hardscog. 
 
 .34 Shaw. 
 
THE COLORADO SCHOOL OF MINES. 37 
 
 622.235.35 Hardy. 
 .36 
 37 
 
 .38 
 
 .236 Electric, hydraulic rotary and miscellaneous drills. 
 
 .1 Electric drills. 
 
 .11 Fort Wayne. 
 
 .12 Dietz. 
 
 .13 Box. 
 
 .2 Airo-electric drills. 
 
 .21 Temple-Ingersoll. 
 
 .22 
 
 .23 
 
 .3 Hydraulic rotary. 
 
 ,31 Brandt. 
 -32 
 -33 
 
 .237 Kinds and care of explosives. 
 
 .1 Low explosives. 
 
 .11 Black powder, 
 
 .in Potassium nitrate powder. 
 
 .112 Sodium nitrate powder. 
 
 .2 High explosives. 
 
 .21 Uncombined. 
 
 .211 Fulminates. 
 
 .212 Nitroglycerine. 
 
 .213 Gun cotton. 
 
 .214 Nitrostarch. 
 
 .215 Chlorate of potash. 
 
 .22 Combined. 
 
 .221 Nitroglycerine dynamites. 
 
 .222 Gelatin dynamites. 
 
 .223 Nitrate of ammonia dynamite. 
 
 .224 Nitrotoluene dynamites. 
 
 .225 Nitrostarch explosives. 
 
 .3 Combination of high and low explosives. 
 
 .4 Prolonged pressuie. 
 
 .41 Lime. 
 
 .42 Hydraulic cartridge. 
 
 .5 Permissible explosives. 
 
 .51 Nitroglycerine explosives. 
 
 .52 Nitrate of ammonia. 
 
 .6 Handling and storage of explosives. 
 
 .61 Shipping explosives^ 
 
 .62 Storing explosives. 
 
 .63 Thawing explosives. 
 
 .631 Thawing explosives in small quantities. 
 
38 THE COLORADO SCHOOL OF MINES. 
 
 622.237.632 Powder thawers. 
 
 .633 Powder thawing houses. 
 
 .7 Adaptability of different explosives. 
 
 .8 
 
 .9 Miscellaneous. 
 
 .238 Charging and firing holes. 
 
 ,i Charging -holes. 
 
 .11 Placing powder. 
 
 .12 Placing detonators. 
 
 .13 Tamping. 
 
 .2 Methods of firing charges. 
 
 .21 Squibs. 
 
 .211 Common. 
 
 .212 Electric. 
 
 .22 Fuses. 
 
 .23 Caps or detonators. 
 
 .24 Electric detonators. 
 
 .241 Instantaneous. 
 
 .242 Delay action. 
 
 .25 Electric shot firing systems. 
 
 .3 Theory of blasting. 
 
 .31 Calculation of charges. 
 
 .32 Number and size of free faces. 
 
 .33 Nature of rock. 
 
 .34 Strength of powder. 
 
 .35 Kind of powder. 
 
 .36 Completeness of detonation. 
 
 4 
 
 5 
 
 .239 Miscellaneous notes on drilling and blasting. Sub- 
 aqueous work. 
 
 622.24 Deep boring*. 
 
 .241 Hand augers. 
 
 .1 Tools 
 
 " .2 Operation. 
 
 .3 Adaptability. 
 
 242 Percussion drilling. 
 
 .1 Operation. 
 
 .2 Spring pole rig. 
 
 .3 Standard rig. 
 
 .31 Outfit. 
 
 .32 Adaptability. 
 
 .4 Portable rigs. 
 
 ,41 Outfit. 
 
 .42 Adaptability. 
 
THE COLORADO SCHOOL OF MINES. 39 
 
 622.242.5 Self cleaning or hollow rod method. 
 
 .6 Pole tool method. 
 
 .7 Empire drill. 
 
 .71 Outfit. 
 
 .72 Operation. 
 
 .73 Adaptability. 
 
 .8 Percussion core drill. 
 9 
 
 243 Hydraulic methods. 
 .1 Hydraulic rotary. 
 .11 Outfit. 
 
 .12 Operation. 
 
 .13 Adaptability. 
 
 .2 Jetting method. 
 
 .21 Outfit. 
 
 .22 Operation 
 
 .23 Adaptability 
 
 244 Abrasive or rotary core drills. 
 .1 Diamond drill. 
 
 .11 Outfit. 
 
 .12 Operation. 
 
 .13 Adaptability. 
 
 Chilled shot drill. 
 
 .21 Outfit. 
 
 .22 Operation. 
 
 .23 Adaptability. 
 
 .3 Calyx drill. 
 
 .31 Outfit. 
 
 .32 Operation. 
 
 .33 Adaptability. 
 
 245 Other methods. 
 
 .246 Comparison of drilling methods. 
 
 .247 Surveying bore hole?. 
 
 .248 
 
 .249 
 
 622.25 Shaft sinking. 
 
 251. Timber lined shafts in overburden 
 
 .1 Firm grourid. 
 
 .2 Soft ground. 
 
 .21 Forepoling or spiling. 
 
 .22 Wooden sheet piling. 
 
 .23 Steel sheet piling. 
 
 .252 Concrete drop shafts and caissons. 
 
 .1 Wooden caissons. 
 
40 THE COLORADO SCHOOL OF MINES. 
 
 622.252.2 Steel caissons. 
 
 .3 Masonry or concrete caissons. 
 
 .31 Excavating by hand. 
 
 .32 Excavating by orange peal bucket. 
 
 .33 Excavating by sack borer. 
 
 .34 Excavating by churn borer. 
 
 .35 Excavating by mammoth pump. 
 
 .4 Pneumatic caissons. 
 
 .5 Cast iron tubbing sinking drums or caissons. 
 
 .6 Shield 'method. 
 
 7 
 
 .8 
 
 .253 Freezing method (Poetsch). . 
 
 .1 Freezing mixtures. 
 
 .2 Arrangement of pipes. 
 
 Excavation. 
 
 Kind-Chaudron method. 
 Outfit. 
 
 .2 Operation. 
 
 .255 Sinking in rock and timbering. 
 
 .1 Machine drilling. 
 
 .12 Method of placing holes. 
 
 .13 Sinking frames. 
 
 .14 Arrangement of working shifts. 
 
 .2 Hand work. 
 
 .21 Method of placing holes. 
 
 .22 Arrangement of working shitts. 
 
 .3 Long hole method. 
 
 .4 Sinking winzes. 
 
 .5 Driving raises. 
 
 .256 Concrete shaft lining in rock. Steel se'.s ( See 
 622.28). 
 
 .1 Shapes of shafts, forms. 
 
 .2 Method of placing concrete. 
 
 .3 Steel shaft sets and lining. 
 
 .257 Head frames, buckets, etc., used in shaft sinking. 
 (See 622.67). 
 
 .1 Head frames, methods of dumping. 
 
 .2 Derricks. 
 
 .3 Buckets. 
 
 .4 Cross heads, guides. 
 
 .258 Handling water in shaft sinking (See 622.5). 
 
 .1 Shaft sinking pumps. 
 
 .11 Vertical plunger type. 
 
 .12 Pulsometer. 
 
 .259 Descriptions of various shafts. 
 
THE COLORADO SCHOOL OF MINES. 41 
 
 622.26 Tunneling and drifting. 
 
 .261 Kinds of tunnels and adits, size and grade. 
 
 .1 Mining *dits. 
 
 .2 Drainage adits. 
 
 .3 Transportation adits. 
 
 .4 Irrigation or water works tunnels. 
 
 .5 Railroad tunnels. 
 
 .6 Sewerage and water works tunnels of small sections. 
 
 7 
 
 .8 
 
 .262 Considerations governing selection of tunnel sites. 
 
 .1 Loose materials at mouth. 
 
 .it Nature. 
 
 .12 Extent. 
 
 .2 Danger from snow or earth slides. 
 
 .3 Formations to be penetrated. 
 
 .4 Water to be handled. 
 
 .41 Surface. 
 
 .42 Underground. 
 
 .5 Getting under cover. 
 
 .263 Tunneling through rock. 
 
 .1 Drilling. 
 
 .11 Drill frames. 
 
 .2 Systems of placing holes. 
 
 .21 Square cut. 
 
 .22 V. cut 
 
 .23 Number and placing of holes. 
 
 .3 Explosives for tunnel driving. 
 
 .a Method'.; of enlarging headings. 
 
 .41 English. 
 
 .42 Belgian. 
 
 .43 German. 
 
 .44 Austrian. 
 
 .45 American. 
 
 .46 Simplon. 
 
 .5 Methods of handling waste. 
 
 .264 Tunneling through soft material. Subaqueous tun- 
 nels. 
 
 .1 Forepoling and breast boards. 
 
 .2 Wedging. 
 
 .3 Tunnel shields. 
 
 .4 Pneumatic caissons. 
 
 .5 Sub-aqueous tunnels. 
 
 .265 Drifting and cross-cutting. 
 
 .266 Driving entries in coal. 
 
 .267 Alignment of tunnels. 
 
42 THE COLORADO SCHOOL OF MINES. 
 
 622.268 Tunneling machines. 
 
 .269 Descriptions of tunnels. Miscellaneous. 
 
 622.27 Stoping 
 
 .271 Overhand. 
 
 .1 Longitudinal back, flat-back, or long wall. 
 
 .2 Rill cut. 
 
 .3 Raise stoping. 
 
 .4 Cutting-out. , 
 
 .5 . Drift stoping. 
 
 .6 Transverse. 
 
 .7 Shrinkage. 
 
 .8 
 
 9 
 
 .272 Underhand. 
 
 .1 Ore drawn from bottom. 
 
 .2 Ore hoisteu to level above, Cornish. 
 
 .273 Combination stoping. 
 
 .274 Breast stoping. 
 
 .275 
 .276 
 .277 
 .278 
 
 .279 Other methods. ' 
 
 622.28 Timbering 1 and mine supports. Masonry lining. 
 
 .281 Kinds and properties of timber for mine use. 
 
 .1 Coniferous trees. 
 
 .11 Pine. 
 
 .12 Spruce. 
 
 .13 Firs. 
 
 .14 Larch. 
 
 .15 Hemlock.. 
 
 .16 Cedar. 
 
 17 
 
 .18 
 
 .19 Others. 
 
 .2 Deciduous trees. 
 
 .21 Oak. 
 
 .22 Hickory. 
 
 .23 Ash. 
 
 .24 Elm. 
 
 .25 Maple. 
 
 .26 Poplar. 
 
 .27 
 
THE COLORADO SCHOOL OF MINES. 43 
 
 622.281.28 
 
 .29 Others. 
 
 .3 Eucalyptus 
 
 4 
 
 5 
 
 .282 Cutting and seasoning trees. 
 
 .1 Influence of season on felling of trees. 
 
 .2. Peeling mine timber. 
 
 .3 Seasoning timbers for mine. 
 
 .31 Air drying. 
 
 .32 Kiln dying. 
 
 .283 Preserving mine timbers. 
 
 i. Methods of application of preservatives. 
 
 .11 Brush treatment. 
 
 .12 Open tank treatment. 
 
 .13 Closed tank pressure treatment. 
 
 .2 Kinds of liquid preservatives. 
 
 .21 Salt solution. 
 
 .22 Zinc chloride Burnett's process. 
 
 .221 Zinc chloride and glue Wellshouses's process. 
 
 .23 Zinc or copper sulphate. / 
 
 .231 Thilmany's process. 
 
 .232 Boucherie's process. 
 
 .24 Bichloride of mercury Kyan's process. 
 
 .25 Creosote 
 
 .26 Sulphate of iron Payne's process., 
 
 .3 Vulcanizing wood. 
 
 .284 Rock pressures. 
 
 .1 General theory of rock pressures. 
 
 .2 Weights of different rocks and earths. 
 
 .3 Action of different roofs. 
 
 .31 Creeps. 
 
 .32 Squeezes. 
 
 .33 Swelling ground. 
 
 .285 One and two stick timbering. 
 
 .1 Props or posts. 
 
 .2 Stulls. 
 
 .21 Angle of underlie of stulls. 
 
 .22 Hitches and caps with stulls. 
 
 .23 Calculating strengths of stulls. 
 
 ,286 Three and four stick timbering. Timber framing 
 
 machines. 
 
 .1 Drift sets. 
 
 .11 Framing drift sets, 
 
 .in Framing drift sets for top pressure. 
 
 .112 Framing drift sets for side pressure. 
 
44 THE COLORADO SCHOOL OF MINES. 
 
 622.286.113 Sills in drift sets. 
 
 .114 Lagging for drift sets. 
 
 .115 Squeeze boards, etc. 
 
 .12 Placing drift sets. 
 
 .2 Shaft sets. 
 
 .21 Methods of framing sets for shafts. 
 
 .211 Wall plates. 
 
 .212 End plates. 
 
 .213 Dividing pieces or buntons- 
 
 .214 Posts or studdles. 
 
 .215 Guides. 
 
 .22 Bearing timbers. 
 
 .23 Placing and blocking shaft sets. 
 
 .24 
 
 25 
 
 25 
 
 .3 Square sets. 
 
 .31 General principles of square sets. 
 
 .32 Diedesheimer square sets. 
 
 .33 Anaconda. 
 
 .34 Homestake square sets. 
 
 35 Use of square sets in inclined seams. 
 
 .36 Modified square sets. 
 
 37 Limiting heights .of square sets. 
 
 .38 Individual members of square sets. 
 
 .39* Placing square sets. 
 
 .4 Timbering swelling ground. 
 
 ,5 Timber framing machines. 
 
 .6 
 
 .7 
 
 .287 Miscellaneous timbering. 
 
 .1 Cribbing. 
 
 .2 Timbering raises and winzes. 
 
 .3 Timbering shaft stations. 
 
 .4 Chutes and chute mouths. 
 
 .5 Head frames. 
 
 .6 Bins. 
 
 .7 Trestles and bridges. 
 
 .8 Towers for tramways. 
 
 .9 Miscellaneous. 
 
 .288 Steel and concrete in mining. Masonry. (See 
 622.257). 
 
 .1 Steel sets. 
 
 .11 Shaft sets. 
 
 .12 Drift sets. 
 
 .2 Concrete and masonry linings. 
 
THE COLORADO SCHOOL OF MINES. 45 
 
 622.289 ' Other methods of support. 
 
 .1 Ore pillars. 
 
 .11 Arch pillars. 
 
 .12 Shaft pillars. 
 
 .13 Dead ends. 
 
 .2 Waste filling. 
 
 .21 Flushing. 
 
 .3 Ore filling. 
 
 622.29 Handling and erecting machinery. Founda- 
 tions. 
 
 .291 Handling heavy machinery. 
 
 .292 Transporting machinery. 
 
 .293 Machinery foundations. 
 
 .294 Setting machinery. 
 
 .295 
 
 .296 
 
 622.3 Working of mines. 
 
 622.31 Open wokings. 
 
 .311 General considerations. 
 
 .1 Geological conditions. 
 
 .2 Topography. 
 
 .3 Magnitude of deposit. 
 
 .4 Value of deposit. 
 
 .5 Thickness and character of overburden. 
 
 .6 Disposal of waste. 
 
 7 
 
 .8 
 
 .312 Blasting material in open pit work. 
 
 .1 Placing blasts in churn drill holes. 
 
 .2 Placing blasts in toe holes. 
 
 .3 Placing blasts by gophering. 
 
 .313 Open pit mining by manual labor. (See 622.212 and 
 622.321.1). 
 
 . i Wheelbarrows. 
 
 .2 Dump carts and wagons. 
 
 .3 Cars. 
 
 .314 Open pit mining with scrapers. (See 622.214 and 
 622.321.2). 
 
 .1 Slip or drag scrapers. 
 
 .2 Wheel scrapers. 
 
 .3 Fresnoes or bucks. 
 
 .4 Steam scrapers. 
 
46 THE COLORADO SCHOOL OF MINES. 
 
 622.315 Open pit mining by steam shovels. (See, 622. 216 and 
 
 622.321.7). 
 
 .1 Methods of opening deposit. 
 
 .11 Thorough cut. 
 
 .12 Spiral cut. 
 
 .2 Height and slope of benches. 
 
 .3 Arrangement of track. 
 
 .316 Open pit mining by clam shell or orange peal dredges. 
 
 (See 622.217). 
 
 .'..,,. .317 ' Open pit mining by self-dumping carriers. (See 
 
 622.321.4). 
 
 .318 Other methods of open pit work. 
 
 .319 Milling or mill holing. 
 
 .1 Opening up deposit; shafts; levels, etc. 
 
 .2 Size and spacing of mill holes. 
 
 .3 Breaking ore into mill holes. 
 
 .31 Slope of working face. 
 
 .32 Height of benches. 
 
 .33 Method of blasting. 
 
 622.32 Hydraulic mining and sluicing. Dredging. 
 
 .321 Methods of getting gravel to sluice other than hy- 
 draulicking. 
 
 .1 Hand shoveling. (See 622.212 and 622.313). 
 
 .11 Limitations. 
 
 .12 Arrangement of shoveling pits and drains. 
 
 .2 Scrapers. (See 622.214 and 622.314). 
 
 .21 Slip or drag scrapers. 
 
 .22 Steam scrapers. 
 
 .3 Track and incline. 
 
 .4 Self dumping carriers. (See 622.317) 
 
 .5 Derricks. 
 
 .6 
 
 .7 Steam shovel. (See 622.216). 
 
 .71 Gravel trammed to sluice. 
 
 .72 Dumps direct into sluice. 
 
 .322 Hydraulicking. (See 622.219). 
 
 .1 Hydraulic installations. 
 
 . 1 1 Headgates. 
 
 .12 Diversion wiers. 
 
 .13 Ditches. 
 
 .14 Flumes. 
 
 .15 Pipe lines. 
 
 .16 Pressure boxes. 
 
 17 
 .18 
 
THE COLORADO SCHOOL OF MINES. 47 
 
 622.322.2 Ground sluicing. 
 
 .3 Booming. 
 
 .4 Hydraulic giants and monitors. 
 
 .41 Construction. 
 
 .42 Operation. 
 
 .43 Capacities. 
 
 .44 Deflectors. 
 
 .441 Hoskins. 
 
 .442 Smith-La Grange. 
 
 .5 Hydraulic elevators injector type. 
 
 .51 Construction. 
 
 .52 Operation. 
 
 53 Capacities and efficiencies. 
 
 .54 Gravel elevators. 
 
 55 Water lifters. 
 
 .6 Other elevators. 
 
 .61 Ruble. 
 .62 
 -63 
 
 .323 Sluicing. 
 
 .1 Primitive methods. 
 
 .11 Pan, Batea. Horn-spoon. 
 
 .12 Rocker. 
 
 .13 Oregon Tom. 
 
 .14 Puddling box. 
 
 .2 Construction of sluices. 
 
 .21 Construction of boxes. 
 
 .211 Posts. 
 
 .212 Braces. 
 
 .213 Sides. 
 
 .214 Lining. 
 
 .22 Construction of riffles. 
 
 .221 Pole riffles. 
 
 .222 Rock riffles. 
 
 .223 Block riffles. 
 
 .224 Steel rail riffles. 
 
 .225 Hungarian riffles. 
 
 .226 
 
 .227 
 
 :228 
 
 .229 Other riffles. 
 
 3 Grade and capacity of sluices. 
 
 31 Proper grade of sluices. 
 
 3ii Influence of kind of gravel. 
 
 312 Influence of amount of water available. 
 
 313 Influence of kind of riffles. 
 
48 THE COLORADO SCHOOL OF MINES. 
 
 622.323.32 Capacity of sluices. 
 
 .4 - Undercurrents. 
 
 .41 Construction. 
 
 .42 Grade and capacity. 
 
 .5 Descriptions of installations. 
 
 .324 General considerations in hydraulic mining and sluic- 
 ing. 
 
 .1 Duty of water. 
 
 .2 Topographical considerations. 
 
 .3 Dump room. 
 
 .4 Waste or debris laws. 
 
 .325 Dipper, clam shell, orange peal and suction dredges. 
 (See 622.217). 
 
 .1 Dipper dredges for placer mining. 
 
 .2 Clam shell and orange peal dredges for placer min- 
 ing. 
 
 .3 Suction dredges for placer mining. 
 
 .31 History. 
 
 .32 Construction. 
 
 .33 Operation. 
 
 .34 Uses. 
 
 .326 Bucket elevator dredges. (See 622.218). 
 
 .1 History and development. 
 
 .11 Single lift dredges. 
 
 .12 Double lift dredges. 
 
 .13 New Zealand type. 
 
 .14 California type. 
 
 .15 Sluice dredges. 
 
 .16 Table dredges. 
 
 .17 Working on head lines. 
 
 .18 Working on spuds. 
 
 .2 Mechanical construction. 
 
 .21 mills. 
 
 .211 Wood. 
 
 .212 Steel. 
 
 .22 Gantries. 
 
 .221 Bow. 
 
 .222 Middle. 
 
 .223 Stern. 
 
 .23 Digging ladder. 
 
 .231 Tumblers. 
 
 .24 Bucket line. 
 
 .241 Open connected. 
 
 .242 Close connected. 
 
 .243 Construction of bucket. 
 
 .1 Two lug. 
 
THE COLORADO SCHOOL OF MINES. 
 
 622.326.243.2 Three lug. 
 
 3 Hood. 
 
 4 Lip. 
 
 5 Bottom 
 
 25 Winches and tie lines. 
 
 26 Trommels, or screens, sprays. 
 
 27 Gold saving tables or sluices. 
 
 28 Spuds and tailing stacker. 
 
 29 Other details of construction. 
 
 3 Operation of bucket elevator dredges. 
 31 Clearing ground. 
 
 3 2 Breaking down gravel. 
 
 321 By hydraulic monitors. 
 -322 By blasting. 
 
 33 Digging. 
 
 33 1 Order of excavation. 
 
 332 Width of cut. 
 
 333 Disposing of large stones. 
 
 334 Cleaning bed rock. 
 
 34 Stepping ahead. 
 35 Cleaning up. 
 
 .4 Miscellaneous. 
 
 327 Drift mining and thawing frozen ground. 
 
 i Opening drift mines. 
 
 ii Adit. 
 .12 Shaft. 
 
 .2 Working drift mines. 
 
 2i Long breast retreating. 
 
 .22 Checker board system. 
 
 23 Other systems. 
 
 3 Conveying gravel. 
 
 .31 Wheelbarrows. 
 
 .32 Cars. 
 
 33 Self-dumping carriers. 
 
 4 Thawing frozen gravel. 
 
 .41 By fires.' 
 
 42 By streams of water. 
 
 43 By steam points. 
 
 .328 Dry placer mining. 
 
 i Excavating. 
 2 Drying. 
 
 3 Screening. 
 
 4 Gold saving appliances. 
 
 .41 Pneumatic. 
 
 411 Bellows actions Woods. 
 
 4 12 Steady air currents Edison. 
 
THE COLORADO SCHOOL OF MINES. 
 
 622.328.5 Miscellaneous dry placer machines. 
 .329 
 
 622.33 Coal mining. 
 
 .331 Opening or developing coal mines. (See 622.291). 
 
 .1 Shafts. 
 
 .12 Advantages and disadvantages. 
 
 .13 Shapes and sizes. Location. 
 
 .2 Slopes. 
 
 .21 Advantages and disadvantages. 
 
 .22 Size. 
 
 .3 Water level drifts and stone headings. . 
 
 .31 Advantages. 
 
 .32 Size, location. 
 
 .4 Entries. 
 
 .41 Kind of entry; face entries; butt entries, etc 
 
 .42 Size of entries. 
 
 .'43 Grade and alignment of entries. 
 
 .5 Single entry system of development. 
 
 .6 Double entry system of development. 
 
 ./ Triple entry system of development. 
 
 .8 Slope landings, shaft bottoms, partings, sidings. 
 
 .9 Mine stables, pump rooms, shanties, lamp stations 
 
 .332 Methods of mining coal at the face. 
 
 .1 Undercutting by pick. 
 
 .2 Undercutting by machines. 
 
 .21 Coal cutting machines. 
 
 .3 Mining in center or top of seam. 
 
 .4 Effect of roof pressure in mining. Draw slate 
 
 .5 Wedging down the coal. 
 
 .6 , Shooting down undercut coal. 
 
 ./ Shooting off the solid. 
 
 .8 Mining coal in benches. 
 
 .333 Working coal mines by room and pillar. 
 
 .1 Turning off rooms. 
 
 .11 Sighting in rooms. 
 
 .12 Direction of rooms, face on, long horn, half on. 
 short horn etc. 
 
 .13 Running rooms both sides of entries. 
 
 .14 Double rooms. 
 
 .2 Dimensions of room.s. 
 
 .21 Slope a condition. 
 
 .22 Depth of seam and nature of roof. 
 
 .23 Character of coal. 
 
 .3 Size of pillars. 
 
 .31 Squeezes. 
 
THE COLORADO SCHOOL OF MINES. 
 
 Drawing pillars. 
 
 .5 Working contiguous seams by room and pillar 
 
 .6 Miscellaneous notes on room and pillar. 
 
 334 Working by pillar and stall. 
 
 335 Working by panel system. 
 
 336 Working inclined seams. 
 .1 Buggy breasts. 
 
 .2 Self acting inclines. 
 
 .3 Working on battery. 
 
 .4 Lengths of rooms in inclined seams. 
 
 .5 Drawing pillars. 
 
 .6 Working contiguous seams. 
 
 .7' Methods of mining anthracite coal. 
 
 .71 Arrangement of breasts. 
 
 .72 Working the breasts. 
 
 337 Working coal mines by long- wall. 
 .1 Roof pressure in long- wall work. 
 
 Roadways in long-wall advancing 
 
 .3 Roadways in long-wall retreating. 
 
 .4 Handling coal on long-wall face. 
 
 .5 Long wall on inclined scams. 
 
 .6 Long-wall on thick seams. 
 
 7 
 .8 
 -9 
 
 338 Miscellaneous or special coal mining method-. 
 .339 Comparison of coal mining methods. 
 
 .^4 Metal mining. Development. 
 
 341 General notes on gold and silver mining. 
 
 342 General notes on copper mining. 
 
 343 General notes on tin mining. 
 
 344 General notes on lead and zinc mining. 
 
 345 General notes on iron mining. 
 
 346 General notes on rare metal mining. 
 
 347 Development of metal mines. 
 
 .1 Size, shape and advantages of vertical shafts. 
 
 .2 Size, shape and advantages of inclined shafts. 
 
 .3 Size, shape and advantages of cross-cut adits. 
 
 .4 Size, shape and advantages of adits on the vein 
 
 .5 Blocking out ore bodies. 
 
 .51 Levels, factors determining distance between lev 
 
 els, etc. 
 
 .52 Drifts, and winzes, location and size. 
 
 .53 Stations, ore pockets, etc. 
 
THE COLORADO SCHOOL OF MINES. 
 
 622.35 Working thick deposits. 
 
 .351 Overhand shrinkage slopes. 
 
 .352 Mining by square sets. 
 
 .353 Transverse stoping. 
 
 .354 Filling systems. 
 
 .355 Top slicing. 
 
 .356 Sub-level drifts and back caving. Chute caving. 
 
 .357 Block caving. 
 
 .358 Chamber and pillar. 
 
 .359 Other methods. 
 
 622.36 Salt mining-. 
 
 .361 Dissolution method. 
 
 .362 Chamber and pillar method. 
 
 622.37 Submarine mining". 
 
 622.38 Gem mining. 
 
 622.39 Alining miscellaneous minerals. 
 
 622.4 Ventilation and lighting of mines. 
 
 622.41 Theory, gases met with, etc. 
 
 .411 Conditions demanding ventilation. 
 
 .1 Requirements of human system for oxygen. 
 
 .2 Need of carrying away poisonous or inert gases. 
 
 .3 Need of diluting or removing inflammable gases. 
 
 .4 Need of cooling deep mines or those hot from ox- 
 idation. 
 
 5 
 .6 
 
 .412 Gases met with in mines. 
 
 .1 Powder smoke. 
 
 .2 Methane or fire damp. 
 
 .3 Carbonic oxide gas or white-damp. 
 
 .4 Carbon dioxide gas or choke damp. 
 
 .5 Hydrogen sulphide or stink-damp. 
 .6 
 
 7 
 .8 
 
 . -9 Other gases. 
 
 .413 Actions and effects of mine gases. 
 
 .1 Effect of gases on animal life. 
 
 .2 Inflammable and explosive mixtures. 
 3 
 
THE COLORADO SCHOQL OF MIXES. 
 
 022.413.4 
 
 5 
 
 .414 Testing for mine gases. 
 
 .1 With safety lamps. (See 622.472.33). 
 
 .11 Method of using lamps. 
 
 .12 Length of flame caps. 
 
 13 
 -M 
 
 .2 Platinum wire indicators. 
 
 .21 Liveing. 
 
 .22 Beard. 
 
 .23 Mackie. 
 
 .24 
 
 25 
 
 .3 Laboratory gas tests. 
 
 .31 Shaw machine. 
 
 .32 Gas analyses. 
 
 33 
 -34 
 4 
 5 
 .6 
 
 .415 General principles of mine ventilation. 
 
 .1 Travel of air currents. 
 
 .11 Through room and pillar workings, 
 
 .in Single entry. 
 
 .112 Double entry. 
 
 .113 Triple entry. 
 
 .14 Through long-wall workings. 
 
 15 
 
 .16 
 
 .2 Air splits. 
 
 .3 Cubic feet of air required by law. 
 
 .31 In gaseous mines. 
 
 .32 In non-gaseous mines. 
 
 .4 Force and exhaust ventilation. 
 
 .41 Advantages and disadvantages of forcing. 
 
 .42 Advantages and disadvantages of exhaustinj 
 
 5 
 .6 
 7 
 
 .416 Theory and calculations on ventilation. 
 
 .1 Ventilating pressure. 
 
 .2 Air velocity. 
 
 .3 Laws of friction. 
 
 .4 Coefficient of friction. 
 
54 THE COLORADO SCHOOL OI' MINES. 
 
 622.416.5 Quantity of air. 
 
 .6 Work and power. 
 
 .7 Laws of ventilation. 
 
 .8 Practical formulae. 
 
 .0 Miscellaneous. 
 
 Natural ventilation. 
 
 Theory of natural ventilation. 
 Power of motive column. 
 
 Effect of temperature and barometer on natur, 
 
 ventilation. 
 
 Reversal of air current. 
 Ventilation of rise and dip workings. 
 
 622.43 Furnaces. Steam jets. Trompes. 
 
 .431 General theory of furnaces. 
 
 43 2 Effective power of coal burned in furnace. 
 
 433 Application of furnace in gaseous mine- 
 
 .1 Dumb entries. 
 
 .434 General notes on steam jets. 
 
 435 General theory of waterfalls or trompes. 
 
 .1 Effect of cooling the air. 
 
 .2 Injector effect of trompe. 
 .436 
 
 622.44 Fans. Mechanical ventilators. 
 
 441 'General notes on mechanical ventilators. 
 
 .1 Extent of use and adaptability. 
 
 .2 Advantages. 
 
 .21 Efficiency. 
 
 .22 Reliability. 
 
 .23 Ability to regulate amount of air. 
 
 .24 Ability to reverse direction of air. 
 
 .25 Ease of operation. 
 .26 
 
 .3 Disadvantages. 
 
 .31 Cost. 
 
77/7: COLORADO SCHOOL O/ ; MIXES. 
 
 ( 122.442 Positive blowers. 
 
 .1 Reciprocating. 
 
 .11 Construction. 
 
 .12 Operation. 
 
 13 Advantages and disadvantage- 
 
 .14 Different makes. 
 
 2 Rotating. 
 
 .21 Construction. 
 
 .22 Operation. 
 
 .23 Advantages. 
 
 .24 Disadvantages. 
 
 .25 Different makes. 
 
 .251 Root. 
 
 .252 Connersville. 
 
 .253 Green. 
 
 .254 Baker. 
 -'55 
 -3 
 4 
 
 .443 Centrifugal fans. 
 
 .1 General theory of centrifugal fans. 
 
 .11 Calculation for capacity and efficiencies. 
 
 Waddle type. 
 
 .21 Construction. 
 
 .22 Operation 
 
 .23 Efficiency. 
 
 24 Makes. 
 
 .3 Guibal type. 
 
 31 Construction. 
 
 .31 Operation. 
 
 .33 Efficiency 
 
 .34 Makes. 
 -35 
 
 4 Capell type. 
 
 .41 Construction. 
 
 .41 1 Old design. 
 
 .412 New design. 
 
 .42 Operation. 
 
 .43 Efficiency. 
 
 .44 Makes. 
 45 
 
 .5 Modern steel plate fans. 
 
 .51 Construction. 
 
 .52 Operation. 
 
 .53 Efficiency. 
 
THE COLORADO SCHOOL OF MIXES. 
 
 Makes. 
 
 .541 Beard-Stine. 
 
 .542 Allis-Chalmers. 
 
 543 Jeffrey. 
 
 .544 Buffalo. 
 545 
 
 .6 High-speed, multivane, fans. 
 
 .61 Construction. 
 
 .62 Operation. 
 
 .63 Efficiency. 
 
 .64 Makes. 
 
 .641 Sirocco. 
 
 .642 Sullivan. 
 
 .643 Ser. 
 -644 , 
 
 .7 Compound, Turbo fans. 
 
 .71 Construction. 
 
 .72 Operation. 
 
 .73 Efficiency. 
 
 .74 Makes. 
 
 .741 Clifford-Capell. 
 .742 
 .8 
 
 .9 Other centrifugal fans. 
 
 444 Disc or propeller fans. 
 
 .1 General theory of disc fans. - 
 
 .2 Calculations for capacity and efficiencie. 
 
 .3 Adaptability. 
 
 .4 Construction. 
 
 .5 Operation. 
 
 .6 Makes. 
 
 .61 Stine. 
 
 .62 Sturtevant. 
 
 63 
 
 .64 
 
 445 Motive power for mine fans. 
 .T Steam. 
 
 Compressed air. 
 
 .3 Electricity. 
 
 .4 Gasolene. 
 
 .5 Water power. 
 
 .6 Direct connections and drives. 
 
 .61 Chain drives. 
 
 .62 . Belt drives. 
 
 .63 Gear drives. 
 
THE COLORADO SCHOOL OF MIXES. 
 
 622.446 Fan setting. Reversing. 
 
 .1 Location of fans. 
 
 .2 Construction of fan houses. 
 
 .21 Materials of construction. 
 
 .22 General design (of doors). 
 
 .23 Arrangements. 
 
 .24 Explosion doors. 
 
 25 
 
 .3 Reversing direction of air. 
 
 .31 By changing direction of rotation. 
 
 .32 By doors. 
 
 .33 By revolving casing. 
 
 .447 Theory and calculations on mechanical ventilator^ 
 
 .j Theory and calculations for positive blowers. 
 
 .11 Reciprocating. 
 
 .12 Rotating 
 
 .2 Theory and calculations for centrifugal fans. 
 
 .3 Theory and calculations for disc fans. 
 
 .448 Descriptions of installations. 
 
 .449 Comparisons. Miscellaneous. 
 
 622.45 Airways. Stoppings. Regulators. 
 
 .451 Airways. 
 
 .1 Size and shape of airways. 
 
 .2 Use of airways for haulage or travel. 
 
 .3 Doors on airways 
 
 .4 Overcasts. 
 
 .5 Undercasts. 
 
 .6 
 
 .452 Stoppings. 
 
 .1 Construction. 
 
 .2 Brattices. 
 
 .3 Curtains. 
 
 4 
 
 5 
 
 .453 Regulators. 
 
 .1 Shifting Doors. 
 
 .2 Box regulators. 
 454 
 455 
 
 622.46 Measurements of ventilation. Tempera tun 
 
 Humidity. 
 
 .461 Measuring air pressure. 
 
 .1 Water gauge and manometer. 
 .2 
 
THE .COLORADO SCHOOL OF MINES. 
 
 622.462 * Measuring air velocity. 
 
 .1 Air meter or anemometer. 
 
 2 
 
 .463 Determining air temperatures. 
 
 .1 Thermometer. 
 
 .2 
 
 .464 Determining humidity of air. 
 
 . i Hygrometer. 
 
 .2 Hydrodeik. 
 
 .465 
 .466 
 
 622.47 Lighting. Safety lamps, etc 
 
 .471 Stationary illuminators. 
 
 .1 Reflected daylight. 
 
 .2 Electric. 
 
 .21 Searchlights. 
 
 .22 Arc lights. 
 
 .23 Incandescent. 
 
 24 
 
 .3 Gas. 
 
 .31 Natural gas. 
 
 .32 Coal gas. 
 
 .33 Acetylene gas. 
 
 .4 Gasolene. 
 
 .472 Candles. 
 
 .473 Torches. 
 
 .474 Lamps. 
 
 .1 Oil. 
 
 .2 Acelylene. 
 
 .3 Safety. 
 
 .31 Construction of safety lamps. 
 
 .32 Use and care of safety lamps. (See 622.414.1 ) 
 
 .33 Illuminating power of safety lamps. 
 
 .34 Kinds of safety lamps. 
 
 .341 Davy. 
 
 .342 Clanny. 
 
 .343 Evan Thomas. 
 
 .344 AshwoTth -Hepplewhite-Gray 
 
 .345 Pieler. 
 
 .346 Wolf. 
 
 347 
 
 .348 
 
 349 
 
 .35 Oils for safety lamps. 
 
 .351 Animal. 
 
THE COLORADO SCHOOL OF MINES. 
 
 622.474-351-1 
 
 Lard. 
 
 .2 
 
 Seal. 
 
 3 
 
 Whale. 
 
 -352 
 
 Vegetable. 
 
 .1 
 
 Rape. 
 
 .2 
 
 Colza. 
 
 3 
 
 Cottonseed. 
 
 4 
 
 Cocoanut. 
 
 353 
 
 Mineral. 
 
 .1 
 
 Gasolene. 
 
 o 
 
 Naphtha. 
 
 3 
 
 Benzine. 
 
 A 
 
 Kerosene. 
 
 -354 
 
 Alcohol. 
 
 -355 
 
 Special and mixed oils. 
 
 4 
 
 Electric storage-battery lamps. 
 
 -41 
 
 Non-rechargeable batteries. 
 
 .411 
 
 Construction. 
 
 .412 
 
 Kinds of batteries. 
 
 -413 
 
 Makes of lamps. 
 
 .413.1 
 
 Every ready. 
 
 .42 
 
 Rechargeable batteries. 
 
 .421 
 
 Construction of lamps. 
 
 .422 
 
 Batteries . 
 
 -423 
 
 Makes. 
 
 .1 
 
 Hubbell. 
 
 .2 
 
 Hirsch. 
 
 3 
 
 Victor. 
 
 622.48 .Coal dust. 
 
 .481 Occurrence and formation of coal dust. 
 
 .1 In rooms. 
 
 .2 Along entries and haulage ways. 
 
 482 Properties of coal dust. 
 
 .1 Explosive action of coals of different analysis. 
 
 2. Effect of fineness of dust. 
 
 .483 Conditions to start dust explosion. 
 
 .484 Propagation of explosions. 
 
 .485 Preventing coal dust explosions. 
 
 485.1 Allaying dust. 
 
 .11 By sprinkling. 
 
 .12 By humidification. 
 
 .2 . , . Dust treatment. 
 
 .486 After results of dust explosions. 
 
 .486.1 Physical effects. 
 
 .....2 ,... Resulting gases. 
 
THE COLORADO SCHOOL OF MINES. 
 
 622.487 
 .488 
 .489 
 622.49 Miscellaneous on ventilation and lighting. 
 
 622.5 Drainage. 
 
 622.51 Theory of infiltration of water. 
 
 .511 Rainfall. 
 
 .1 Extent. 
 
 .2 Effect of climatic and seasonal changes on rainfall. 
 
 .3 Watershed. 
 
 .4 Runoff. 
 
 .5 Evaporation. 
 
 .512 Seepage waters. 
 
 .1 Extent and variation of. 
 
 .2 Conditions affecting seepage. 
 
 .21 Topography. 
 
 .22 Geology. 
 
 .221 Unconsolidated deposits. 
 
 .222 Stratified deposits. 
 
 .223 Massive deposits. 
 
 .224 Dykes. 
 
 .225 Fault planes. 
 
 .23 Climate. 
 
 .24 Vegetation. 
 
 .513 Water level. Hydraulic gradient. 
 
 .514 Movement of underground waters. Water courses- 
 
 .515 Artesian wells. 
 
 .516 Springs. 
 
 .517 Magmatic waters. Ground water. 
 
 .1 Theory of ground water level. 
 
 .2 Conditions effecting depth of ground water. 
 
 .3 Limits of ground water in horizontal sheets. - 
 
 .518 Drainage of old workings. 
 .519 
 
 622.52 Natural drainage. 
 
 Surface diversions. 
 
 Ditches. 
 
 Dams. 
 
 Drains, etc., to prevent waters entering mine open- 
 ings or surface works. 
 Underground diversions. 
 
 Dams. Barriers. Bulkheads. (See 622.56.) 
 
THE COLORADO SCHOOL OF MIXES. 
 
 622.522.2 Adits. (See 622.261.) 
 
 .21 Size. Cross-section and grade of drainage adit 
 
 .22 Methods of carrying water 
 
 .222 Side ditches. 
 
 .222 Ditches under track. 
 
 .223 Boxes. 
 
 .3 Siphons. 
 
 .31 Theory. 
 
 .32 Adaptability 
 
 .33 Operation. 
 
 .523 Drainage down shafts. 
 
 .1 Effect on timbers. 
 
 .2 Effect on ventilation. 
 
 .3 Collecting rings. 
 
 .4 Sumps. 
 
 .5 Swamps. 
 
 .524 Drainage through bore holes. 
 
 525 
 .526 
 
 022.53 Cornish pumps. 
 
 .531 General description. 
 
 .532 . Operation of Cornish pumps. 
 
 .533 Efficiency of Cornish pumps. 
 
 .534 Cornish pump rods. 
 
 .534.1 Materials of construction. 
 
 .2 Connections. 
 
 .3 Catches and bumpers. 
 
 .4 Guides. 
 
 .5 Adjustment of weights. 
 
 .6 Balancing. 
 
 .7 Strains in rods. 
 
 .8 Wire rope. 
 
 9 
 
 .535 Cornish pump cylinders. 
 
 .535.1 Arrangement of valves. 
 
 622.54 Steam pumps. Compressed air. Electric. 
 
 .541 Operation of pumps by steam. 
 
 .1 General considerations. 
 
 .2 Efficiency. 
 
 .3 Simple steam ends. 
 
 .4 Compound steam ends. 
 
 .5 Running steam pumps condensing. 
 
 .6 Valves for steam pumps. 
 
62 THE COLORADO SCHOOL OF MINES. 
 
 622.541.7 
 
 .8 
 
 9 
 
 .542 Operating pumps by compressed air. 
 
 .1 General conditions. 
 
 .11 Advantages. 
 
 .12 Disadvantages. 
 
 .2 Efficiency. 
 
 .543 Operating pumps by electricity. 
 
 .1 General considerations. 
 
 .11 Adaptability. 
 
 .12 Advantages. 
 
 .13 Disadvantages. 
 
 .2 Efficiency. 
 
 .3 Motors for pump service. 
 
 .544 Miscellaneous power for pumps. 
 
 .545 General notes on adaptability and efficiencies of 
 pumps. 
 
 .1 Pumps for high pressure duty. 
 Pumps for low pressure duty. 
 
 .546 General notes on care and operation of pumps. 
 
 .547 Types of pumps. 
 
 .1 Lift pumps 
 
 .2 Force pumps. 
 
 .21 Duplex. 
 
 .22 Triplex. 
 
 .23 Quintuplex. 
 
 .3 Double acting pumps. 
 
 .31 Simplex. 
 
 .32 Duplex. 
 
 .33 Piston. 
 
 .34 Plunger. 
 
 .341 Inside packed. 
 
 .342 Outside packed. 
 
 .343 Center packed. 
 
 .4 Sinking pumps. 
 
 .41 Construction. 
 
 .42 Efficiency. 
 
 .5 Centrifugal pumps. 
 
 .51 Construction. 
 
 . 52 Operation. 
 
 .53 Adaptability. 
 
 .54 Efficiency. 
 
 .6 Injector pump. Hydraulic water lifters. 
 
 .61 Construction. 
 
 .62 Operation. 
 
THE COLORADO SCHOOL OF MINES. 63 
 
 622.547.63 Efficiency. 
 
 .7 Pulsometers. 
 
 .71 Construction. 
 
 .72 Operation. 
 
 .73 Efficiency. 
 
 .8 Air lift pumps. 
 
 .9 Hydraulic rams and miscellaneous pumps. 
 
 .548 Pump details. 
 
 Valves. 
 
 Cylinders. 
 
 .j Air chambers. 
 
 .549 Descriptions of individual pumps and pump installa- 
 
 tions. 
 
 622.55 Hoisting of water. 
 
 55i Principles of water hoists. 
 
 55 2 Efficiency of water hoists. 
 
 553 General arrangement of water hoists'. 
 
 .1 H'oist used for water and other service. 
 
 .2 Automatic hoists for water only 
 
 554 Advantages and disadvantages of water hoists. 
 
 i Effect of splash on timbering. 
 .2 Freezing. 
 
 3 
 4 
 
 555 Water buckets and tanks. 
 .556 Water skips. 
 
 557 Methods of dumping water tanks. . 
 
 i Tank valves. 
 
 End dump tanks. 
 
 3 Self-dumping water skips. 
 
 558 Sump arangements for hoisting water. 
 559 
 
 622.56 Dams and water tight lining. 
 
 (See also 622.28, Timbering.) 
 
 .561 Necessity of mine dams. 
 
 .562 Pressure on mine dams. 
 
 .563 Construction of dams. 
 
 .564 Wooden dams. 
 
 .1 Flat. 
 
 .2 Wedge shaped. 
 
 .565 Masonry dams. 
 
 ,566 Concrete dams. 
 
 .567 Other dams. 
 
64 THE COLORADO SCHOOL OF MINES. 
 
 622.57 Acid waters. Mine waters. 
 
 .571 Pollution of mine waters. 
 
 .572 Testing mine waters. 
 
 .573 Handling acid waters. 
 
 .574 Handling other deleterious mine waters. 
 
 622.518 Underground drainage systems. Piping. 
 
 .581 Underground drainage systems. 
 
 .582 Underground piping. 
 
 .1 Kinds of pipe for mine use. 
 
 .2 Laying pipe. 
 
 .3 Care and life of pipe lines. 
 
 .4 Anchoring pipe in shafts. 
 
 622.59 Drainage districts. 
 
 .591 Formation of drainage districts. 
 
 .1 Extent. 
 
 .592 Laws relating to drainage districts. 
 
 .593 Taxation. 
 
 .594 . Drainage companies. 
 
 622.6 Extraction. Hoisting and transportation. 
 
 622.61 Handling mineral in working place. 
 
 .611 Picking and shoveling to. 
 
 .1 Sacks. 
 
 .2 Baskets. 
 
 .3 Zurrones. 
 
 .4 Barrows. 
 
 .5 Buckets. 
 
 .6 Cars. 
 
 .7 Conveyors. 
 .8 
 
 9 
 
 ,612 Steam shovel underground. 
 
 .613 Gravity. 
 
 .1 Chutes. 
 
 .2 Pockets. 
 
 .3 Batteries. 
 
 622.62 Underground roads. 
 
 .621 Earth. 
 
 .622 Plank. 
 
 .623 Railroads. 
 
 .1 Gauge. 
 
THE COLORADO SCHOOL OF MINES. 65 
 
 622.623.2 
 
 Grades. 
 
 3 
 
 Curves. 
 
 4 
 
 Roadbed. 
 
 5 
 
 Track. 
 
 Si 
 
 Rails. 
 
 511 
 
 Wooden. 
 
 512 
 
 Strap iron or steel. 
 
 .513 
 
 T-rails. 
 
 52 
 
 Rail fastenings. 
 
 53 
 
 Spikes. 
 
 54 
 
 Ties. 
 
 .6 
 
 Switches. 
 
 .61 
 
 Latch and point. 
 
 .62 
 
 Stub. 
 
 .63 
 
 Turnout. 
 
 .64 
 
 Cross-over. 
 
 -65 
 
 Diamond. 
 
 .66 
 
 Automatic. 
 
 .67 
 
 Pass-bys. 
 
 .68 
 
 
 69 
 
 
 7 
 
 Crossings. 
 
 71 
 
 Cross -overs. 
 
 .72 
 
 Turn sheets. 
 
 73 
 
 Turn-tables. 
 
 74 
 
 
 Track laying, sheaves, rollers, etc. 
 
 .9 Miscellaneous data. 
 .624 
 .625 
 .626 
 
 622.63 Mine cars, trams, etc. 
 
 .631 Coal cars (standard). 
 
 .632 Ore cars. 
 
 .633 Car bodies. 
 
 .634 Car trucks. 
 
 .635 Wheels and axles. 
 
 .636 Car fastenings. Hitching. Latchings. 
 
 .637 Trollies. 
 
 .638 Man cars. 
 
 622.64 Gravity roads and planes. 
 
 .641 Self-acting incline or gravity plane. 
 
 .1 Three-rail. 
 
 .2 Four-rail. 
 
66 THE COLORADO SCHOOL OF MINES. 
 
 622.641.3 Two track planes. 
 
 .4 Grade. 
 
 .5 Length. 
 
 .6 Capacity. 
 
 .642 Engine planes. 
 
 .1 Single track. 
 
 .2 Double track. 
 
 .3 Single plane with balance weight. 
 
 .4 Engine or motors. 
 
 .5 Grade. 
 
 .6 Length. 
 
 .643 Monorail. 
 
 622.65 Tramming and animal haulage. 
 
 .651 
 
 Human, 
 
 .652 
 
 Animal. 
 
 .i 
 
 Dog. 
 
 .2 
 
 Burro. 
 
 -3 
 
 Horse. 
 
 -4 
 
 Mule. 
 
 .653 
 
 Selection of animals. 
 
 654 
 
 Care of animals. 
 
 .i 
 
 Feeding. 
 
 2 
 
 Stabling. 
 
 3 
 
 Shoeing. 
 
 -4 
 
 Harness. 
 
 655 
 
 Favoring conditions. 
 
 .656 
 
 Average work done. 
 
 622.66 
 
 Mechanical haulage. 
 
 .66i 
 
 Rope haulage. 
 
 .1 
 
 Engine planes, etc. (See 622.64.) 
 
 2 
 
 Tail rope system. 
 
 3 
 
 Endless rope system. 
 
 .662 
 
 Locomotives. 
 
 .r 
 
 Steam. 
 
 .i i 
 
 Tractive. 
 
 .12 
 
 Positive or rack rail. 
 
 .2 
 
 Compressed air. 
 
 .21 
 
 Types. 
 
 .22 
 
 Changing stations. 
 
 663 
 
 Electric motors. 
 
 .1 
 
 Types. 
 
 .2 
 
 Trolleys. 
 
 3 
 
 Current used. . 
 
 4 
 
 Storage battery. 
 
THE COLORADO SCHOOL OF MINES. 67 
 
 622.664 Gas and gasolene motors. 
 
 .1 Types. 
 
 .2 Gases exhausted. 
 
 .3 Safety. 
 
 .665 Rating of locomotives or motors. 
 
 .1 Drawbar pull. 
 
 .2 Haulage resistance. 
 
 .3 Ton miles. 
 
 .666 Gathering. 
 
 .667 Size of trains. 
 
 .668 Main road haulage. 
 
 .669 Miscellaneous. 
 
 622.67 Hoisting engines. Drums. Ropes. 
 
 .671 Human. 
 
 .1 Direct pull. 
 
 .2 Packing. 
 
 .3 Windless. 
 
 .4 Winch. 
 
 .672 Animal. 
 
 .1 Whips. 
 
 .2 Whims. 
 
 ,673 Mechanical. 
 
 .1 Water wheel. Impact. Turbine. 
 
 .2 Steam hoists 
 
 .21 Types. 
 
 .3 Compressed air hoists. 
 
 .31 Types. 
 
 .32 Storage of air. 
 
 .33 Reheating of air. 
 
 .34 Regeneration of air. 
 
 .4 Electric hoists. 
 
 .41 Types. 
 
 .42 Motors used. 
 
 .43 Current. 
 
 .44 Motor-generator sets. 
 
 .45 Storage battery systems. 
 
 .5 Gas and gasolene hoists. 
 
 .51 Types. 
 
 .52 Adaptability. 
 
 .674 Drums. Spools. Reels. 
 
 .1 Cylindrical drums. 
 
 .2 Conical drums. 
 
 .3 Cylindro-conical. 
 
 .4 Spools. 
 Reels. 
 
THE COLORADO SCHOOL OF MINES. 
 
 622.674.6 Fixed drums. Spools. Reels. 
 
 .7 Loose drums. Spools. Reels. 
 
 .8 Clutches. 
 
 .9 Brakes. 
 
 .675 Rating and selection of hoists. 
 
 .1 Motors. \ 
 
 .2 Drums. 
 
 .3 Spools. 
 
 .4 . Reels. 
 
 .676 Hoisting systems. Hoisting problems. 
 
 .1 Unbalanced. 
 
 .2 Balanced. 
 
 .3 Koepe. 
 
 .4 Whiting. 
 
 .5 Butte air regeneration. 
 
 .6 
 
 -7 
 
 .8 Hoisting problems. 
 
 .677 Indicators. Overwinding devices. 
 
 .1 Target or dial indicators. 
 
 .2 Shaft indicators. Vertical, horizontal. 
 
 .3 Differential or compensating indicators. 
 
 .4 Signal devices. Signal codes. 
 
 .5 Overwinding devices. 
 
 .6 Automatic cut off. 
 
 ./ Auxiliary brakes. 
 
 .8 Detachable hooks. 
 
 .9 Miscellaneous. 
 
 .678 Hoisting and haulage ropes. 
 
 .1 Class. 
 
 .11 Round. 
 
 .12 Tapering. 
 
 .13 Flat. 
 
 .2 Material. 
 
 .21 Vegetable fibre. 
 
 .22 Iron. 
 
 .23 Cast steel. 
 
 .24 Plow steel. 
 
 .3 Section. 
 
 31 Wires. 
 
 * .32 Strands. 
 
 33 Cores. 
 
 34 Lays. 
 
 .4 Selection of ropes. 
 
 .5 Care of ropes. 
 
 .6 Splicing of ropes. 
 
THE COLORADO SCHOOL OF MINES. 69 
 
 622.6/8.7 Calculations. 
 
 .8 Sheave wheels. Rope fittings. 
 
 .9 Miscellaneous. 
 6/9 
 
 622.68 Cages. Skips. Buckets. 
 
 .681 Single deck cages. 
 
 .682 Multiple deck cages. 
 
 .683 Slope cages. 
 
 .684 Shaft skips. 
 
 .685 Slope or incline skips. 
 
 .686 Buckets. 
 
 .687 Automatic dumping devices. 
 
 .688 Safety devices, chairs, etc. 
 
 .689 Guides, track, skids, etc. 
 
 622.69 Surface transportation, including mineral 
 
 roads, wire ropeways, transhipment, load- 
 ing, unloading, etc. 
 
 .691 Human. 
 
 .1 Load carried. 
 
 .692 Animal. 
 
 .1 Pack train. 
 
 .2 Wagon haulage. 
 
 .3 Animals employed. 
 
 .31 Dogs. 
 
 .32 Burros. 
 
 .33 Mules. 
 
 .34 Horses. 
 
 .35 Oxen. 
 
 .36 Llamas. 
 
 .4 Trails. 
 
 .5 Roads. 
 
 .6 Loads. 
 
 7 
 .8 
 
 .9 Miscellaneous. 
 
 .693 Mechanical. 
 
 .1 Railroad (steam). 
 
 .2 Electric motors. 
 
 .3 Compressed air engines. 
 
 .4 Gas and gasolene motors. 
 
 .5 Motor trucks. 
 
 .6 Wire rope ways. 
 
 .6: Single cable. 
 
 .611 Fixed buckets. 
 
70 THE COLORADO SCHOOL OF MINES. 
 
 622.693.612 Detachable buckets. 
 
 62 Double cable. 
 
 621 Fixed buckets. 
 
 622 Detachable buckets. 
 
 63 Reversible rope ways. 
 
 6 3i 'Single cable. 
 
 6 32 Double cable. 
 
 6 4 Track cable. Traction cables. 
 
 5 Rolling stock. 
 
 651 Buckets. 
 
 652 Carriages. 
 
 653 Grips. 
 
 654 Trolleys. 
 
 66 Supports. 
 
 .661 Towers. 
 
 662 Trestles. 
 
 663 Tension stations. 
 
 664 Bridges. Guard-nets. 
 
 665 Sheaves. 
 
 .666 Saddles. 
 
 -667 Length of span. 
 
 67 Stations. 
 
 671 Terminal stations. 
 
 672 Angle stations. 
 
 673 Methods of loading and unloading 
 
 674 Automatic loading devices. 
 
 675 Automatic unloading devices. 
 
 68 Suspension cableways. 
 
 681 Inclined cableways. 
 
 682 Horizontal cableways. 
 
 -683 Ropes. 
 
 684 Carriages. 
 
 685 Towers. 
 
 -7 Conveyors. 
 
 7i Gravity discharge elevators 
 
 72 Rigid bucket carriers. 
 
 73 Pivoted bucket carriers. 
 
 74 Cable conveyors. 
 
 75 Flight or scraper conveyors. 
 
 76 Bucket conveyors. 
 77 Screw conveyors. 
 .78 Belt Conveyors. 
 .781 Belt. 
 
 .782 Belt carriers. 
 
 783 Trippers. 
 -784 Incline. 
 
THE COLORADO SCHOOL OF MINES. 
 
 622.693.79 Miscellaneous. 
 
 .694 Water transportation. 
 
 .695 Headframes. Tipples. Ore bins. 
 
 696 Terminal stations. Depots. 
 
 697 Mechanical devices for loading and unloading. 
 
 698 Tariffs. Duties. Customs. Taxes on ores. 
 699 
 
 622.7 Mechanical preparation. Ore dressing. 
 
 622.71 Theory. Preliminary operations. 
 
 711 Character of minerals, 
 
 i Specific gravity. 
 
 .2 Size of grains. 
 
 Shape of grains." 
 
 Character of gangue material. 
 Brittleness. 
 
 2 Friability. 
 
 3 Specific gravity. 
 
 4 Porosity. 
 5 
 
 .6 
 
 713 Theory of momentum in concentration. 
 
 7M Theory of centrifugal force. 
 
 715 Free settling of particles in water. 
 
 716 Electro-conductivity and magnetism. 
 
 717 Colloid hydrates. 
 
 718 Theory of surface tension. 
 719 
 
 622.72 Hand dressing. 
 
 721 Underground sorting. 
 
 722 Hand sorting or picking on surface. 
 .1 Picking belts. 
 
 723 Hand cobbing. 
 .724 Slate picking. 
 
 622.73 Crushing. Stamping engine. 
 
 73i Preliminary crushing. 
 
 .1 Jaw crushers. 
 
 11 Blake type. 
 
 12 Dodge type. 
 13 
 
THE COLORADO SCHOOL OF MINES. 
 
 622.731.2 Gyratory crushers. 
 3 
 4 
 
 .5 Disc crushers. 
 
 .732 Rolls. ^ 
 
 .1 Principles of roll crushing. 
 
 .11 Wet crushing. 
 
 .12 Dry crushing. 
 
 .2 Speed and capacity. 
 
 .3 Care and operation. Foundations. 
 
 .4 Repairing. Roll shells. 
 
 .5 Spring rolls. 
 
 .6 Rigid rolls. 
 
 .7 Corrugated or toothed rolls. 
 
 .8 Vertical rolls: Triplex rolls. 
 
 .9 Other rolls Comparisons. Miscellaneous 
 
 .733 Steam, pneumatic and spring stamps. 
 
 .1 Steam stamps. 
 
 .11 Single cylinder. 
 
 .12 Cross-compound. 
 
 .13 Tandem-compound. 
 
 .14 Operation of steam stamps. 
 
 15 
 .16 
 
 .2 Pneumatic stamps. 
 
 .3 Hydraulic stamps. 
 
 .4 Spring stamps. 
 
 .734 Gravity stamps. 
 
 .1 Action and capacity. 
 
 .11 Stamping dry. 
 
 .12 Stamping wet. 
 
 .2 Operation and repair. 
 
 .21 Life of shoes and dies. 
 
 .22 
 
 23 
 
 .3 Mortar blocks. Foundations. 
 
 .4 Mortars. 
 
 .41 Individual mortars. 
 
 .42 Double discharge mortars. 
 
 .43 Single discharge .mortars. 
 
 .44 Sectionalized mortars. 
 
 -45 
 
 .46 
 
 .5 -Other details of construction. 
 
 .51 Guide blocks. 
 
 .52 Stems. 
 
THE COLORADO SCHOOL OF MINES. 
 
 622.734.53 Cams. 
 54 
 55 
 
 .6 Power for stamps. 
 
 7 
 .8 
 
 9 
 
 .735 Chilian and Huntington mills. 
 
 .1 Chilian mills. 
 
 .11 Construction. 
 
 .12 Adaptability. 
 
 .13 Operation and repair. 
 
 .14 Power and capacity. 
 
 .15 Makes. 
 
 .2 Huntington mills. 
 
 .21 Construction. 
 
 .22 Adaptability. 
 
 .23 Operation and repair. 
 
 .24 Power and capacity. 
 
 .25 Makes. 
 
 3 
 
 4 
 
 5 
 
 .736 Grinding pans. 
 
 .737 Disintegrators and pulverizers. 
 
 .738 . Ball and tube mills. 
 
 .1 Construction. 
 
 .2 Adaptability. 
 
 .3 Operation and repair. 
 
 .31 Pebbles. 
 
 .32 Linings. 
 
 .4 Power and capacity. 
 
 .5 Makes. 
 
 .51 Conical ball mill. 
 
 52 
 
 53 
 
 54 
 
 .739 Other crushers. Laws of crushing. Miscellaneous 
 
 622.74 Screening. Classification. 
 
 .741 Principles of screen sizing. 
 
 .742 Kinds of screen cloths. Openings. 
 
 .743 Makes of screens and sizers. 
 
 .1 Stationary screens and grizzlies. 
 
 .2 Shaking and pulsating screens. 
 
 .3 Impact screens. 
 
74 THE COLORADO SCHOOL OF MINES. 
 
 622.743.4 Revolving screens. Trommels. 
 
 .5 Belt screens. 
 
 .6 Sizers. 
 
 7 
 
 .8 
 
 .9 Comparisons. Miscellaneous. 
 744 
 
 .745 Principles of classification: 
 
 .746 Classification schemes. Practical details. 
 
 .747 Kinds of classifiers. 
 
 .i Free settling classifiers. Cones. 
 
 .2 Hindered settling classifiers. Hydraulic classifiers. 
 
 .3 Dewatering classifiers and sand and slime separators. 
 
 4 
 
 -5 
 
 .6 
 
 .748 
 
 .749 Other data on classifiers and classification. 
 
 622.75 Jigging- O re concentrators. 
 .751 Laws of jigging. 
 
 .752 Operation and adaptability of jigs. 
 
 -753 Kinds of jigS: 
 
 .1 Jigs for coal washing. 
 
 .754 Table concentrators. 
 
 .1 Theory and practice. 
 
 .2 Wilfley table. 
 
 .3 Card. 
 
 .4 Standard. 
 
 .5 Overstrom. 
 
 .6 Deister. 
 
 7 
 
 .8 
 
 .9 Others. Camparisons. 
 
 .755 Belt concentrators. 
 
 .756 Dry concentrators. 
 
 .757 Preliminary washers. 
 
 .1 Trough washers. 
 
 .2 Log washers. 
 
 .3 Wash trommels. 
 .758 
 
 .759 Comparisons. Miscellaneous. 
 
 622.76 Slime treatment. Flotation. 
 
 .761 Principles of slime treatment. 
 
 .762 Settling and thickening of slimes. 
 
THE COLORADO SCHOOL OF MINES. 
 
 622.763 Table slimers. 
 
 .1 
 
 .2 
 
 3 
 
 .764 Traveling belt slimers. 
 
 .1 Shaking 
 
 .2 Stationary. 
 
 .765 Buddies. Rotary slime concentrators. 
 
 .766 Other slimers. Comparisons. Miscellaneous. 
 
 .767 Principles and theory of flotation. 
 
 .768 Flotation proceesses. 
 
 .1 Elmore process. 
 
 .2 Potter and Delprat. 
 
 .3 Minerals Separation Co.'s process. 
 
 .4 DeBavay process. 
 
 .5 Macquisten's process. 
 
 .6 Wood's flotation method. 
 
 .9 Other processes. Adaptability. Comparisons. 
 
 .769 Miscellaneous data on flotation. 
 
 622.77 Magnetic separation. 
 
 771 Principles and theory of magnetic separation. 
 
 772 Preparing ores for treatment. Magnetic roasting. 
 
 773 Primary magnet separators. 
 
 . i Wetherill. 
 
 .2 Ball-Norton. 
 
 .3 Ferraris. 
 
 .4 Leighton. 
 5 
 .6 
 
 .9 Others. Comparison^. 
 
 774 Induced magnet separators. 
 
 .1 International. 
 
 .2 Ulrich. 
 
 .3 Grondal. 
 
 .4 Cleveland-Knowles. 
 
 5 
 .6 
 7 
 .8 
 .9 Others. Comparisons. 
 
-6 THE COLORADO SCHOOL OF MINES. 
 
 622.775 Electrostatic separators. 
 
 .1 Blake-Morscher. 
 
 .2 Huff. 
 3 
 
 .776 
 -777 
 
 622.78 Coal washing. Washeries. 
 
 .781 Necessity for washing coal. 
 
 .782 Theory and -principles of coal washing. 
 
 .783 Laboratory tests and analyses. 
 
 .784 Construction of washeries. 
 
 .785 Accessory apparatus for washeries. 
 
 .786 Arrangement of machinery and order of treatment. 
 
 .787 Descriptions of coal washing plants. 
 
 .788 Operation of washeries. 
 
 .-789 Miscellaneous data. 
 
 622.79 Dressing works. Accessory apparatus. 
 
 .791 Construction of mill buildings. 
 
 .1 Steel. 
 
 .2 Wood. 
 
 .792 Foundations and setting of mill machinery. 
 
 .793 Accessory apparatus in mills. 
 
 .1 Bins. 
 
 .11 Construction. 
 
 .12 Bin gates. 
 
 .13 Capacities. 
 
 .2 Feeders. 
 
 .21 Apron feeders. 
 
 .22 Reciprocating plate. 
 
 .23 Shaking. 
 
 .24 Automatic roll. 
 
 .25 Automatic rotary. 
 
 .26 Revolving disc. 
 
 .27 Push feeders. 
 
 .28 
 
 .29 
 
 .3 Conveyors. 
 
 .4 Elevators. 
 
 .5 Pumps. 
 
 .6 Launders. 
 
 .61 Construction. 
 
 .62 Grade and capacity. 
 
 .63 
 
 .7 Driers and dewatering wheels. 
 
THE COLORADO SCHOOL OF MINES. 
 
 622.793.8 Sampling and weighing devices. 
 
 .9 Miscellaneous. 
 
 .794 Power in milling. 
 
 .795 Water for concentration. 
 
 .796 Operation of mills. Practical milling. 
 
 .797 Testing and sampling mills. Laboratory outfits. 
 
 .798 Descriptions and flow sheets of concentrators. 
 
 .799 Miscellaneous data. 
 
 622.8 Dangers and accidents. Sociology. 
 
 622.81 Explosions of fire-damp, dust, etc. 
 
 .811 Fire-damp explosions. 
 
 .1 Causes of fire-damp explosions. 
 
 .2 Prevention of fire-damp explosions. 
 
 .3 Effect of fire-damp explosions. 
 
 .4 Handling of fire-damp explosions. 
 
 .812 Coal dust explosions. (See 622.48.) 
 
 .1 Causes of coal dust explosions. 
 
 .2 Prevention of coal dust explosions. 
 
 .3 Effect of coal dust explosions. 
 
 .4 Handling of coal dust explosions. 
 
 .813 
 .814 
 
 622.82 Mine fires. 
 
 .821 Causes of mine fires. 
 
 .822 Prevention of mine fires. 
 
 .823 Effect of mine fires. 
 
 .824 Handling of mine fires. 
 
 .825 
 
 .826 
 
 .827 Descriptions of metal mine fires. 
 
 .828 Descriptions of coal mine fires. 
 
 .829 
 
 622.83 Crushing and fall of ground. 
 
 .831 Causes of caving ground. 
 
 .832 Prevention of caving ground. 
 
 .833 Effect of caving ground. 
 
 .834 Handling of caving ground. 
 
 .835 Surface caving or subsidence. 
 
 622.84 Flooding of mines. 
 .841 Causes of mine floods. 
 
7 8 THE COLORADO SCHOOL O/ ; MINES 
 
 622.842 Prevention of mine floods. 
 
 .843 Effect of mine floods. 
 
 .844 Handling mine floods. 
 
 622.85 Accidents to miners. 
 
 .851 Classification of metal mine accidents. 
 
 (Note If desired, each class may be divided into 
 
 fatal and non fatal accidents.) 
 
 .1 Surface accidents. 
 
 .11 Overwinding cage, skip or bucket. 
 
 .12 Falls from ladders, bins, etc. 
 
 .13 Falling down shaft or prospect hole 
 
 .14 Machinery accidents. 
 
 .15 Handling loose rock or ore. 
 
 .16 Tramming gravity trams. 
 
 .17 Coming in contact with live wire. 
 
 .18 Operating hydraulic or placer machines 
 
 .19 Miscellaneous. 
 
 .191 Boiler explosions. 
 
 .192 Lightning. 
 
 .193 Avalanches. 
 
 .194 Snow slides. 
 
 .2 Shaft accidents. 
 
 .21 Falls from buckets, cage, etc., while in motion. 
 
 .22 Getting off while in motion. 
 
 .23 Caught in shaft while being hoisted or lowered. 
 
 .24 Falls of material. 
 
 .241 From shaft sides. 
 
 .242 From overloaded bucket, car or skip 
 
 .25 Falls. 
 
 .251 Falls from ladder. 
 
 .252 Falling down shaft from level. 
 
 .253 Pushing ear into open shaft. 
 
 .26 Carrying tools, timber or explosive. 
 
 .27 Struck by descending cage, bucket or skip. 
 
 .28 Cable becoming detached, cage falling 
 
 .29 Miscellaneous. 
 
 .3 Underground accidents. 
 
 .31 Falls. 
 
 .311 From ladders. 
 
 .312 From overloaded staging. 
 
 .313 Down chute, winze, or manvvay 
 
 .32 Falls of material. 
 
 .321 Falls of rock. 
 
 .322 Falls of timber while timbering 
 
 .33 By tram car. Tramming. 
 
THE COLORADO SCHOOL OF MINES. 79 
 
 622.851.34 Handling loose rock or ore. 
 
 .35 Caught by running material. 
 
 .36 Drilling. 
 
 .361 Machine drilling. 
 
 .362 Hand drilling. 
 
 .37 Machinery accidents. 
 
 .38 Suffocation. 
 
 .381 Burning shaft house or tunnel building. 
 
 .382 By powder smoke. 
 
 .39 Miscellaneous. 
 
 .4 Accidents from explosives. 
 
 .41 Handling explosives. 
 
 .411 Carrying explosives. 
 
 .412 Storing explosives. 
 
 .413 Thawing explosives. 
 
 .42 Picking out missed shot. 
 
 .43 Drilling into missed hole. 
 
 .44 Blast exploding while loading. 
 
 .45 Waiting too long after spitting. 
 
 .46 Returning before blast goes off. 
 
 .47 Striking unexploded powder while mucking. 
 
 .48 Hit with flying rock from blast. 
 
 .49 Miscellaneous. 
 
 .852 Classification of coal mine accidents. 
 
 (Note If desired, each class may be divided into 
 fatal and non.-fatal accidents. 
 
 .1 Surface accidents. 
 
 .11 ' Overwinding cage. 
 
 .12 Falls from ladders, tipples, etc. 
 
 .13 Being struck by car. 
 
 .14 Machinery accidents. 
 
 .15 Coming in contact with live wire. 
 
 .16 Falling down shaft or prospect hole. 
 
 .17 Injured by cable. 
 
 .18 
 
 .19 Miscellaneous. 
 
 .191 Boiler explosions. 
 
 .192 Lightning. 
 
 .193 Avalanches. 
 
 .194 Snow slides. 
 
 .2 Shaft or slope accidents. 
 
 .21 Falls from cage while in motion. 
 
 .22 Getting off cage while in motion. 
 
 .23 Falls. 
 
 .231 From ladder. 
 
 .232 Falling down shaft from landing. 
 
8o THE COLORADO SCHOOL OF MINES. 
 
 622.852.24 Falling material. 
 
 .241 From sides of shaft. 
 
 .242 From overloaded cars. 
 
 .25 Carrying tools, timber, or explosives. 
 
 .26 Being struck by descending bucket or trip. 
 
 .27 Injuries on falling cage. 
 
 .271 When cable becomes detached. 
 
 .272 When engineer loses control. 
 
 .28 Miscellaneous. 
 
 .29 
 
 .3 Underground or drift accidents. 
 
 .31 Falls. 
 
 .32 Falls of material. 
 
 .321 Falls of drawslate. 
 
 .322 Falls of rock. 
 
 .323 Falls of coal. 
 
 .33 Struck by car. 
 
 .34 Burns. 
 
 .35 Machinery accidents. 
 
 .36 Suffocation. 
 
 .361 By smoke from burning building. 
 
 .362 By smoke from mine fires. 
 
 .363 By after-damp. 
 
 .37 Coming in contact with live wire. 
 
 .38 Injuries from horses or mules. 
 
 .39 Miscellaneous. 
 
 .4 Accidents from explosives. 
 
 .41 Handling explosives. 
 
 .411 Carrying explosives. 
 
 .412 Storing explosives. 
 
 .413 Thawing explosives. 
 
 .42 Blast exploding while loading. 
 
 .43 Waiting too long after spitting. 
 
 .44 Returning before blast' goes off. 
 
 .45 Premature explosion by electricity. 
 
 .46 Striking unexploded powder. 
 
 .47 Hit with flying coal or rock. 
 
 .48 Starting fires or explosion by blasts. 
 
 .49 Miscellaneous. 
 
 .853 Percentages of fatal and non-fatal accidents in metal 
 
 mines. 
 
 .854 Percentages of fatal and non-fatal accidents in coal 
 
 mines. 
 
 .855 Miners insurance. 
 
 .1 Life insurance. 
 
 .2 Accident insurance. 
 
THE COLORADO SCHOOL OF MINES. Si 
 
 622.855.3 Workmen's aid. 
 
 .856 Liability for accidents. 
 
 .1 Employer's liability. 
 
 .2 Employee's liability. 
 
 .3 Contributory negligence. 
 
 .857 
 
 .858 
 
 622.86 Rescue and relief. 
 
 .861 Rescue work in good air. 
 
 .1 Organization of rescue parties. 
 
 .2 Conducting rescue parties. 
 
 Rescuing imprisoned men. 
 
 Rescuing injured men. 
 
 .5 Descriptions of rescues. 
 .6 
 
 862 Rescue work in irrespirable atmosphere : breathing 
 
 apparatus for use in noxious atmosphere. 
 
 .1 Necessity of organized rescue, work. 
 
 .2 Organization of rescue teams. 
 
 .3 Oxygen breathing apparatus self-contained. 
 
 .31 Free oxygen injector type. 
 
 .311 Draeger. 
 
 .312 Westfalia. 
 
 .32 Free oxygen type without injector. 
 
 .321 Proto or Fleuss. 
 
 .33 Oxygen generating apparatus. 
 
 .331 Aerolith (liquid air). 
 
 .332 Servus. 
 
 .34 Other types. 
 
 .35 Notes on oxygen regenerators. 
 
 .36 Notes on helmets and mouth breathing apparatus 
 
 and equipment. 
 
 .37 Supplies for breathing apparatus. 
 
 .371 Pumps. 
 
 .372 Oxygen and tanks. 
 
 .38 Miscellaneous. 
 
 .4 Stationary breathing apparatus. 
 
 .5 Special oxygen reviving apparatus. 
 
 .51 Draeger Pulmotor. 
 
 .52 Dr. Brat. 
 
 .6 Mine rescue stations. 
 
 .7 Mine rescue cars. 
 
 .8 Conducting rescues and miscellaneous equipment. 
 
 .9 Descriptions of rescues. Miscellaneous. 
 
82 THE COLORADO SCHOOL OF MINES 
 
 622.863 First-aid work. 
 
 .1 Necessity of first-aid instruction. 
 
 First-aid instruction. Classes. 
 
 .21 Federal. 
 
 .22 State. 
 
 .23 Private. 
 
 3 First-aid materials and supplies. 
 .4 Methods of first-aid treatment. 
 
 5 Organization of first-aid teams 
 .6 . First-aid meets. 
 
 7 
 .8 
 
 9 
 
 .864 
 .865 
 .866 
 
 622.87 Inspection of mines. Mine bureaus and labora- 
 tories. 
 
 .871 Necessity of mine inspection. 
 
 872 Federal inspection of mines. 
 
 873 State inspection of mines. 
 
 .] Organization of state offices. 
 
 .2 Duties of state inspectors. 
 
 3 Authority and responsibility of state inspectors. 
 
 .4 Qualifications of state inspectors. 
 
 .5 Appointment. 
 
 .6 
 
 874 Company inspection of mines. 
 
 .1 Organization of inspecting force 
 
 .11 Inspectors. 
 
 .12 Fire bosses. 
 
 .13 Shot firers. 
 
 .2 Qualifications of inspecting force. 
 
 .3 Duties of inspecting force. 
 
 .4 Authority of inspecting force. 
 
 o Responsibility of inspecting force. 
 
 .6 
 
 .875 Federal bureau of mines. 
 
 .876 State mining bureaus. 
 
 .877 Mining laboratories. 
 .878 
 .879 
 
THE COLORADO SCHOOL OF MINES. 83 
 
 622.88 Health and care of workmen. Institutions for 
 
 miners. 
 
 881 Sanitary arrangements and care of workmen under 
 
 ground. 
 
 Miner's diseases. 
 Sanitary arrangement and care of workmen on the 
 
 surface. 
 .1 Change houses and dry rooms. 
 
 Workmen's dwellings. 
 .3 Model towns. 
 
 4 
 
 883 Medical aid for workmen 
 
 .1 Company doctors. 
 
 Company hospitals. 
 
 .21 Underground hospitals. (See 622.862.) 
 
 22 Camp hospitals. 
 
 23 General hospitals. 
 
 .3 Hospital and medical funds. 
 
 .884 Company stores and boarding houses 
 
 885 Social clubs. 
 
 .886 Schools. 
 
 .887 Churches. 
 
 .888 Asylums and prisons. 
 
 889 
 
 622.89 Miners' customs and life. Miners and mining 
 
 men. 
 
 891 Life of miners. 
 
 892 Miners' customs. 
 .893 Etiquette of miners. 
 
 .894 Mine superstitions and traditions. 
 
 895 Miners of all ages. 
 
 896 Human side of mining, 
 i Mining ethics. 
 
 .2 Moral responsibilities. 
 
 897 Histories and biographies of miners. 
 
 .898 Histories and biographies of mining men. 
 
 899 Miscellaneous. 
 
 622.9 Mine economics. Accounting. Miscellaneous. 
 
 622.91 Mine investments. Stocks and stockholders. 
 
 911 Mines as investments. 
 
 912 Mining risks. 
 
84 THE COLORADO SCHOOL OF MINES. 
 
 622.913 Causes of mine failures. 
 
 .1 Natural causes. 
 
 .2 Lack of management. 
 
 .3 Litigation. 
 4 
 
 5 
 
 .914 Mine frauds. 
 
 .1 Wild-cat mines. 
 
 .2, Salting mines. 
 
 3 
 
 4 
 
 .915 Mine promotion. 
 
 .1 Capital for mines. 
 
 2 Mine promoters. 
 
 .3 Floating mines. 
 
 4 Selling mines. 
 
 ,5 Buying mines. 
 
 .6 
 
 / 
 
 .916 Mining companies. 
 
 .T Organization. 
 
 .2 Foreign. 
 
 .3 Domestic. 
 
 .4 Offices. 
 
 .5 Meetings. 
 
 .6 Regulation of. 
 
 7 
 
 .8 Reports. 
 
 .9 Miscellaneous. 
 
 .917 Mine stocks and bonds. 
 
 .1 Assessable stock. 
 
 .2 Non-assessable stock 
 
 .3 Listing stocks. 
 
 .4 Stock speculation. 
 
 .5 Watered stock. 
 
 .6 Bonds. 
 
 .7 Capitalization. 
 
 .8 Valuation. 
 
 .9 Dividends. 
 
 .918 Mine stockholders. 
 
 .1 Protection of stockholders. 
 
 .2 Information to stockholders. 
 
 .3 Duties of stockholders. 
 
 .4 Liabilities of stockholders. 
 
 .5 Rights of stockholders. 
 .919 
 
THE COLORADO SCHOOL OF MINES. 
 622.92 Management of mines. 
 
 .921 General principles of mine management. 
 
 .1 Application of sound engineering principles 
 
 .11 Efficiency engineering. 
 
 .2 Coordination and efficiency of human units. 
 
 .3 Coordination and efficiency of mechanical units. 
 
 .4 Economy in purchase and consumption of supplies. 
 
 .5 Economy in disposal of product. 
 
 .6 Scientific management. 
 
 .922 Organization of mine force. 
 
 .1 Managers and general superintendents. 
 
 .2 Superintendents and foremen. 
 
 .3 Shift bosses and gang bosses. 
 
 .4 Engineering staff. 
 
 .5 Mechanics and electricians. 
 
 6 Purchasing agents. 
 
 .7 Auditors and cashiers. 
 
 .8 Timekeepers and clerical force. 
 
 .9 Other help. 
 
 .923 Mine labor. 
 
 .1 Kinds of labor skilled and unskilled. 
 
 .11 White. 
 
 .12 Southern Europe. 
 
 .13 Mexican. 
 
 .14 Chinese and Japanese. 
 
 .15 Kaffir. 
 
 .16 Convict. 
 
 .17 Child. 
 
 .18 Women mine workers. 
 
 .19 Other labor. 
 
 .924 Payment of mine labor. 
 
 .1 Straight wage. 
 
 .2 Script. 
 
 .3 Sliding scales. 
 
 .4 Piece or task work. 
 
 .5 Bonus system. 
 
 .6 Cooperative mining. 
 
 .7 Workmen's compensation. 
 
 .8 Employer's liability. 
 
 .9 Miscellaneous. Pensions. 
 
 .925 Administration of mine force. 
 
 .T Mine rules and regulations. 
 
 .2 Mine discipline. 
 
 .3 Rights of the miner. 
 
 .926 Ore thefts. High grading. 
 
 .927 Responsibility of mine officials and relation to society 
 
86 THE COLORADO SCHOOL OF MINES. 
 
 622.928 Qualification of successful mine officials. 
 
 -929 Capital and labor. 
 
 622.93 Organized labor. 
 
 -931 Organization of labor union. 
 
 i Oficers. 
 
 Membership. 
 Walking delegates. 
 Labor agitators. 
 
 Responsibility of labor unions. Treating with labor 
 unions. 
 Open shop. 
 Closed shop. 
 Right to discharge. 
 Arbitration. 
 
 5 Card system. 
 
 . -6 Black list 
 
 933 Labor strikes. 
 
 .1 Strikes with grievances 
 
 .2 Sympathetic strikes. 
 
 3 Referendum votes. 
 
 4 Picketing. 
 
 5 Boycotts. 
 
 6 Courts and strikes. 
 
 622.94 Contract systems and leasing. Ore purchas- 
 
 ing-. 
 
 941 Contract work in mines. 
 
 - 1 Kinds of contract work. 
 
 Forms of contracts 
 Premiums and bonuses. 
 Leasing mines. 
 
 i Forms for mine leases. 
 
 Advantages of leasing 
 3 Disadvantages of leasing. 
 
 4 Royalties. 
 
 5 Tribute system. 
 
 943 Marketing of ore and ore contracts. 
 
 i Sampling. 
 
 Mixing and grading ores. 
 Ore contracts. 
 
 622.95 Mine accounts. Bookkeeping. 
 
 -951 Bookkeeping . 
 
 i Single entry. 
 
THE COLORADO SCHOOL OF MINES. 87 
 
 622.951.2 Double entry. 
 
 95 2 Standardization of mine accounts. 
 
 953 Classification of mine accounts. 
 
 i Capital account. 
 .11 Property. 
 
 12 Machinery and plant. 
 
 13 Buildings. 
 
 14 Surface works. 
 
 15 Main opening shafts, adits. 
 
 16 Underground development. 
 
 i/ Depreciation. 
 
 1 8 Amortization . 
 
 Development. 
 
 2i Shaft sinking. 
 .22 Drifting. 
 
 .23 Cross cutting. 
 
 .24 Raising. 
 
 25 Sinking. 
 
 .26 Prospecting. 
 
 3 Ore extraction. 
 
 31 Stoping or breaking ore. 
 
 32 Timbering or filling. 
 
 33 Underground tramming. 
 
 34 Hoisting. 
 35 Pumping. 
 
 36 Sampling, assaying, and surveying. 
 
 37 General underground maintenance. 
 
 38 Sorting. 
 
 39 Miscellaneous. 
 
 4 Transportation. 
 
 .41 Wagon. 
 
 42 Animal train. 
 
 43 Railroad. 
 
 44- Water. 
 
 5 Ore reduction or treatment. 
 
 51 Crushing. 
 
 52 Amalgamation. 
 
 53 Concentration. 
 
 54 Cyaniding. 
 
 55 Slime treatment. 
 
 56 Roasting 
 
 57 Smelting converting. 
 
 58 Refining. 
 
 59 Miscellaneous. 
 6 Ores and bullion. 
 
b >8 THE COLORADO SCHOOL OP MINES. 
 
 622.953.7 Administration. ' . 
 
 .71 Salaries (managers and office force). 
 
 .72 Office expense. 
 
 .73 Traveling expense. 
 
 .74 Insurance. 
 
 .75 Legal expense. 
 
 .76 Accidents. 
 
 .77 Medical hospital, sanitary. 
 
 .78 Stable and transport. 
 
 .79 Miscellaneous. 
 
 .8 Head office. 
 
 .81 Agency expense. 
 
 .82 Directors' fees. 
 
 .83 Consulting engineer. 
 
 .84 Auditor. 
 
 .85 Bank charges. 
 
 .86 Interest on debentures. 
 
 .9 Miscellaneous. 
 
 .954 Books employed. 
 
 .1 Cash book. 
 
 .2 Time book. 
 
 .3 Supply book. 
 
 .4 Voucher book. 
 
 .5 Journal. 
 
 .6 Ledger book. 
 
 .9 Others. 
 
 .955 Forms. 
 
 .956 Card and loose leaf system. 
 
 .957 Cost account and analysis of costs. 
 
 .958 Balance sheets. 
 
 .959 Miscellaneous. 
 
 622.96 Systems for keeping mine notes. Recording, 
 engineering and geological data. 
 
 .961 Keeping notes in the field. 
 
 .1 General notes. 
 
 .2 Special notes. 
 
 .3 Note books. 
 
 .962 Recording geological data in the field. 
 
 .963 Recording geological data in the office. 
 
 .964 Keeping permanent notes. 
 
 .1 General notes. 
 
 .2 Special notes. 
 
 .3 Note books. 
 
THE COLORADO SCHOOL OF MIXES. Sg 
 
 622.965 Filing information. 
 
 .966 Card indexes. 
 .967 
 
 622.97 Taxation. Insurance. 
 
 .971 Taxation of mines. 
 
 .972 
 
 .973 Mine insurance. Buildings and shipments. Liability 
 
 622.98 Miscellaneous data on business side of mining. 
 
 622.99 Unclassified data on mining- in general. 
 
RELATIVE INDEX 
 
 A. 
 
 Abrasives 
 
 Abrasive or core drills 
 
 Abyssinia 
 
 Accident insurance ........ 
 
 Accidents and dangers, So- 
 ciology 
 
 Accidents 
 
 from explosives 
 
 classification of coal 
 mine 
 
 classification of metal 
 mine 
 
 liability for 
 
 Accounts, mine 
 
 books employed in .... 
 
 classification of 
 
 cost accounts 
 
 standardization of 
 
 Acetylene gas illuminators. . 
 Action of different roofs . . 
 Acquiring mineral lands 
 in United States 
 
 in Canada 
 
 in Mexico . 
 
 553-65 
 
 Air meters 
 \ir pressure of . 
 
 622.462 
 .461 
 
 622.244 
 
 .186.3 
 
 .855.2 
 
 .8 
 
 Air splits 
 Air temperatures, 
 ing 
 Air valve drills . . 
 Air velocitv 
 
 415-2 
 determin- 
 
 463 
 .234.2 
 416.2 
 
 85 
 .851-4 
 
 Airoelectric drills 
 Airways 
 Albertite 
 
 236.2 
 45 
 553-271 
 
 .852 
 
 -851 
 .856 
 
 Alcohol for safety 
 
 Alexandrite 
 Algeria 
 
 lamps. . . . 
 622.472.335.4 
 553-895 
 622.186.5 
 
 Adits . . 
 
 see tunneling . . . 
 Adjustment of instruments.. 
 Administration of mine force 
 
 Adverse surveys 
 
 Afghanistan 
 
 Africa 
 
 Agate 
 
 Agents of geological work. . 
 
 Agitators, labor 
 
 Air compression 
 
 Air compressors, dry 
 
 wet 
 
 Air engines, compressed . . . 
 
 hot 
 
 Air hammer drills . 
 
 Air. determining humidity of 
 
 95 Alignment and grade 
 
 954 of entries 331-43 
 
 953 of tunnels 267 
 
 957 Allaying dust 485.1 
 
 952 Allis-Chalmers fans 443-542 
 
 .472.32 Aluminum 553-49 1 
 
 .284.3 Amended surveys 622.132.6 
 
 America 187 
 
 .125 Amethyst 553-88i 
 
 .126 Amorphous phosphates 643 
 
 .127. Anemometer 622.462.1 
 
 .261 Angle of underlie of stulls. . .285.21 
 
 347-3 Animal haulage 652 
 
 hoists 672 
 
 .141.7 Animals, care of .654 
 
 .925 for surface transporta- 
 
 .132.7 tion 692 
 
 .185.8 Animal life, effect of gases 
 
 .186 on 413 
 
 553-885 Antarctic regions 622.189.9 
 
 551.9 Anthracite 553-25 
 
 622.931.4 methods of mining .... 662.336.7 
 
 621.5 Antimony 553-471 
 
 .51 Apatite 642 
 
 .52 Application of furnace in 
 
 .42 gaseous mine 622.433 
 
 .41 preservatives .283.1 
 
 622.235 Aquamarine 553-832 
 
 .464 Arabia 622.185.3 
 
THE COLORADO SCHOOL OF MINES. 
 
 Arbitration with labor 622.932.4 
 
 Arc lights 471.22 
 
 Arctic regions 189.8 
 
 .Argentine Republic .188.2 
 
 Arch pillars 289.11 
 
 Arsenic S53-47 2 
 
 Asbestos ' .671 
 
 Ash 622.281.23 
 
 Asia 185 
 
 Asphalt 553.276 
 
 Assay maps 622.146.13 
 
 Assessable stock -9I7- 1 
 
 Asylums and prisons 884 
 
 Astronomy 520 
 
 Auditors 622.922.7 
 
 Australasia 622.189.3 
 
 Australia 622.189.4 
 
 Austria 184.3 
 
 Authority and responsibility 
 of company inspecting 
 
 Black list 622.932.6 
 
 Blasting 23 
 
 theory of 238.3 
 
 Blocking out ore bodies 347-5 
 
 Blood stone 553-886 
 
 Blowers : 622.442 
 
 Blowpiping 123.51 
 
 Boarding houses .888 
 
 Boiler explosions. (See 
 
 accidents) 
 
 Boilers 621.181 
 
 Boilers, construction and 
 
 setting of 621.185 
 
 Boiler tests, instruments for .171 
 
 Bolivia 622.188.4 
 
 Bonds 9I7-6 
 
 Bonus system 924.5 
 
 Books employed in mining 
 
 accounts 954 
 
 force 
 
 .874-4 
 
 Books, note 
 
 \ .901.3 
 
 Auxiliary valve drills 
 
 ..234-3 
 
 
 '/ .964-3 
 
 Avalanches 
 
 .852.193. 
 
 Bookkeeping 
 
 .951 
 
 
 
 Borax 
 
 ceo 5o6 
 
 B. 
 
 Balance sheets 
 Ball mills 
 Bank heights 
 Barite 
 Baskets 
 
 622.958 
 -738 
 .216.5 
 553-861 
 622.611.2 
 
 mining of 
 Bore holes, sampling by. 
 Boring deep 
 (See drilling) 
 Boycotts 
 
 . . . 622.39 
 .174 
 .24 
 
 933-5 
 
 Batea 
 
 .123.6 
 
 Box regulators 
 
 453-2 
 
 Batteries for lamps 
 Belgian method for enlarg- 
 ing tunnels 
 
 -474-4 
 .263.42 
 
 Brattices 
 Brazil, mines of etc 
 Breathing apparatus .... 
 Bridges 
 
 .452.2 
 .188.1 
 .862 
 .287.7 
 
 Beloochistan 
 
 .185.8 
 
 British America, mines 
 
 of, 
 
 Belt conveyors .... 
 
 .693-78 
 
 etc 
 
 .187.1 
 
 1 
 
 793-3 
 
 Bromine 
 
 tro 532 
 
 Beryl gems 
 
 553.83 
 
 Bucket elevator dredges . 
 
 . . . 622.218 
 
 Bins 
 
 622.287.6 
 
 Bucket line, dredge 
 
 .326.24 
 
 mill 
 
 .695 
 
 Buckets, ore 
 
 .686 
 
 Biographies of mining men. 
 
 .898 
 
 Bucks 
 
 .214.2 
 
 of miners 
 
 .897 
 
 Buddies 
 
 ... .765 
 
 Bismuth 
 
 553-491 
 
 Building stones 
 
 ... 553-5 
 
 Bits, hand-drill 
 
 622.231 
 
 Buildings, valuation of . 
 
 . . . 622.171 
 
 Bituminous and semi-bitu- 
 
 
 Bureaus, federal mining . 
 
 . . . .875 
 
 minous coals 
 
 553-24 
 
 state mining . . . 
 
 .876 
 
 shale 
 
 23 
 
 Buying mines 
 
 .915-5 
 
THE COLORADO SCHOOL O/ ; MINES. 
 
 93 
 
 C. 
 
 Cable ways 
 
 Cables (See ropes 
 
 Cadmium 
 
 Cages 
 
 aissons 
 
 Calculations 
 
 Calculating value of ore.... 
 
 Calyx drill 
 
 Canada, acquiring mineral 
 
 lands in 
 
 mineral surveys in 
 
 Candles 
 
 Cannel coal 
 
 Capital and labor 
 
 Capital for mines 
 
 Capital account (See mine 
 
 accounts). 
 
 Caps 
 
 Carbon series 
 
 Carbonite 
 
 Card and loose leaf system.) 
 
 Card system, labor unions.. 
 
 Carnelian 
 
 Carpenter shop 
 
 Cars, mine 
 
 coal 
 
 fastenings, hitchings and 
 latchings 
 
 ore 
 
 Cashiers 
 
 Caving 
 
 Cements 
 
 Central America 
 
 Centrifugal fans 
 
 (See fans) 
 
 pumps 
 
 Chains for surveying 
 
 Chambers and pockets. Im- 
 pregnations 
 
 Chamber and pillar, mining 
 by 
 
 Change houses 
 
 Channelers . . . : 622.222.3 
 
 622.693.6 Charging holes 238.1 
 
 Chemistry 540 
 
 553.491 Chilian mills 622.735.1 
 
 622.68 Chile, mines of, etc 188.3 
 
 .252 Chilled shot drill 244.2 
 
 .264.4 China, mines of, etc .185.1 
 
 553.08 Chromium 553-642 
 
 622.175.2 Chrysoprase 887 
 
 .244.3 Churn drilling 622:252 
 
 Churches 887 
 
 .126 Chutes -287.4 
 
 .133 Classification, principles of 
 
 .472 ore ./45 
 
 553.23 schemes . .746 
 
 622.929 Classifiers, kinds of 747 
 
 QJS- 1 Classification of materials 
 
 of excavation .211.1 
 
 Clays 553.6i 
 
 .238.23 Cleaning bed rock, dredges. 622.326.35 
 553- 2 Clearing ground for dredges .326.31 
 
 26 Clerical force 922.8 
 
 622.956 Climate 176.7 
 
 .966 Closed shop . .- 932.2 
 
 93 2 -5 Coal, driving entries in .... .266 
 
 553-889 dust 48 
 
 621.74 accidents .812 
 
 622.63 allaying of 485.1 
 
 .631 explosions 812 
 
 occurrence and for- 
 .636 mation of ....... .481 
 
 .632 properties of .482 
 
 922 j propagation of ex- 
 
 .356 plosion 484 
 
 .357 cutting machines 332.21 
 
 553.68 lands, acquiring 125.7 
 
 622.187.2 mining 33 
 
 443 effect of roof pres- 
 sure in -332-4 
 
 547-5 entries in 331-4 
 
 .141.4 opening or develop- 
 ing 331 
 
 553.18 methods of mining 
 
 at face 332 
 
 622.358 working by long 
 
 .882.1 wall 337 
 
94 
 
 THE COLORADO SCHOOL OF MINES. 
 
 Coal mining 622.33 
 
 panel system . . .335 
 pillar and stall. .334 
 room and pillar .333 
 
 inclined seams 336 
 
 in benches -332.8 
 
 special methods of 
 
 working .338 
 
 seams, sampling -174-7 
 
 washing, washeries (See 
 washeries) 
 
 Cobalt 553482 
 
 Coking coals .242 
 
 Colombia, mines of, etc 622.188.6 
 
 Companies, mining .916 
 
 domestic 916.3 
 
 foreign 916.2 
 
 organization of .916.1 
 
 reports of 916.8 
 
 Company doctors .883.1 
 
 hospitals 883.2 
 
 stores and boarding 
 
 houses .884 
 
 Compends 553-2 
 
 ( 621.42 
 Compressed air engines -\ ^ 22 ^^ 
 
 pumps 542 
 
 Compressors, dry air 621.51 
 
 wet air .52 
 
 Compressed air transmission 621.53 
 Concentration (See ore 
 
 dressing and mills) 
 Concentrators, ore 622.75 
 
 belt 755 
 
 dry 756 
 
 slime (See slimers) 
 
 table 754 
 
 Consulting engineer .922.4 
 
 Contracts and specifications. .003 
 Contracts, ore 622.943.3 
 
 systems .94 
 
 work in mines .941 
 
 Contributory negligence 856.3 
 
 Conveyors at working face. .611.7 
 
 at surface 693.7 
 
 Co-operative mining .924.0 
 
 Copper, mining 
 
 ores of 
 
 Cornish pumps 
 
 ' efficiency of 
 
 operation of . . ., 
 
 rods 
 
 Core drills . 
 
 Corundum 
 
 Costs 
 
 Cost accounting 
 
 Costs, analysis of , 
 
 Courts and strikes 
 
 Cranes 
 
 Cribbing 
 
 Crushing of ground 
 
 Crushing 
 
 Crushers, disc 
 
 gyratory 
 
 Jaw 
 
 Crushing, laws of 
 
 Crossings and crossovers... 
 
 Cross-over switches 
 
 Crystallography 
 
 Cuba 
 
 Curtains 
 
 Curves in underground roads 
 
 Customs on ores 
 
 Cyclopedias 
 
 Cymophane 
 
 Customs of miners 
 
 D. 
 
 Dams and water tight lin- 
 ings 622.56 
 
 Dams, construction of mine .563 
 
 Dangers 
 
 De Bavay's flotation process 
 
 Debris 
 
 Deflectors 322.44 
 
 Delay action fuses 238.242 
 
 Denmark, mines of, etc 184.8 
 
 Deposition and erosion .... 551.3 
 
 Deposits from magmatic em- 
 anations 553.112.1 
 
 of sedimentary origin.. .111.2 
 
 Depots, ore 622.696 
 
 622.342 
 
 553-43 
 622.53 
 
 -533 
 
 -532 
 
 -534 
 
 .244 
 553.658 
 
 .82 
 622.002 
 
 957 
 
 957 
 
 933-6 
 621.87 
 622.287.1 
 
 .83 
 
 73 
 
 732-5 
 
 .732.2 
 
 731-1 
 739 
 623.7 
 .623.64 
 
 548 
 
 622.187.2 
 
 452-3 
 -623.3 
 .698 
 
 622.03 
 
 553-896 
 
 622.892 
 
 .8 
 .768.4 
 
THE COLORADO SCHOOL OF MINES. 
 
 95 
 
 Derricks 
 
 Designs : . . . 
 
 Detachable hooks 
 
 Determination of meridian. 
 Detonation, completeness of. 
 
 Detonators 
 
 electric 
 
 Development of mining . . . 
 
 Devvatering wheels 
 
 Diamond drill 
 
 Diamonds 
 
 Diatomaceous earth 
 
 Dictionaries 
 
 Digging ladder, dredge 
 
 Dip, outcrop, strike 
 
 Dipper dredges 
 
 Dipping needles 
 
 Direct observations 
 
 Directories 
 
 Disc crushers 
 
 Discipline, mine 
 
 Diseases 
 
 Disintegrators 
 
 Ditches 
 
 Ditch surveys 
 
 Diversion wiers 
 
 Dividends 
 
 Divining rods 
 
 Doctors 
 
 Double entry development.. 
 Drainage 
 
 districts 
 
 ditches 
 
 down shafts 
 
 natural 
 
 of old workings 
 
 systems, underground... 
 
 through bore holes .. 
 
 drains 
 
 Drawings 
 
 Dredges, bucket elevators. 
 
 clam shell . 
 
 622.321.5 
 
 553-004 
 
 622.677.8 
 
 .142.1 
 
 .238.36 
 622.238.23 
 
 .238.24 
 
 .09 
 
 793-7 
 
 .244. i 
 553-Si 
 
 -654 
 
 .865 
 
 -03 
 622.326.23 
 
 551.85 
 622.325.1 
 
 .123 
 
 .142.13 
 553-02 
 622.732.5 
 
 .925.2 
 
 .881 
 
 737 
 
 322.13 
 
 .142 
 622.322.12 
 
 .917.9 
 
 .123' 
 
 .883.1 
 
 331-6 
 
 5 
 
 59 
 
 -521 
 
 .523 
 
 52 
 
 -5i8 
 
 .581 
 
 524 
 
 521.3 
 
 .321.12 
 
 .004 
 .218 
 .326 
 
 .316 
 .217.1 
 
 grab bucket 
 
 ( 
 
 622.217.1 
 
 
 ] 
 
 325-2 
 
 orange peel .... 
 
 ...... j 
 
 .316 
 .217.1 
 
 
 i 
 
 .217.2 
 
 suction 
 
 j 
 
 
 
 .... j 
 
 325-3 
 
 ssing ore . . 
 
 
 7 
 
 hand 
 
 
 / 
 
 72 
 
 works 
 
 
 
 / ^ 
 
 79 
 
 (See mills and con- 
 centrators) 
 
 Drift mining 
 
 Drift sets 
 
 Drifting 
 
 Drill, diamond 
 
 steel 
 
 Drills, electric machine .... 
 
 hand power 
 
 hammer machine 
 
 machine, care and oper- 
 ation of 
 
 piston machine 
 
 sharpening 
 
 core 
 
 Drilling and blasting 
 
 hand 
 
 churn 
 
 percussion or churn . . . 
 
 prospecting by 
 
 columns and other ac- 
 cessories 
 
 (See boring) 
 
 Drums, hoists 
 
 Dry concentrators 
 
 houses 
 
 Dry placer mining 
 
 Dryers 
 
 Dump room 
 
 Dumping devices 
 
 Dumps, sampling 
 
 Duty of water 
 
 Dwellings 
 
 Dynamical and physical ge- 
 ology 
 
 Dynamites 
 
 327 
 .286.1 
 
 -265 
 
 .244.1 
 
 .231 
 
 .236 
 
 .232.2 
 
 235 
 
 233 
 234 
 231.5 
 .244 
 
 -23 
 .232 
 
 232.13 
 .242 
 
 .122.6 
 233 
 
 .674 
 .756 
 .882.1 
 622.328 
 
 793-7 
 
 324-3 
 
 .687 
 
 -174-5 
 
 .324.1 
 
 .882.2 
 
 55i 
 622.237.22 
 
THE COLORADO SCHOOL OF MINES. 
 
 Earth ..................... 
 
 shrinkage of .......... 
 
 Earthy minerals ........... 
 
 Economic geology ......... 
 
 Economics of mining ...... 
 
 Economy in disposal of 
 product 
 
 handling supplies ...... 
 
 Ecuador, mines of, etc 
 Education ................. 
 
 Efficiency engineering ..... 
 
 Egypt, mines of, etc ....... 
 
 Electric detonators 
 
 drills 
 
 hoists 
 
 locomotives 
 machine drills 
 processes, electrolysis, 
 
 etc ................... 
 
 shot firing systems ..... 
 
 shocks, etc. (See acci- 
 
 dents) 
 
 storage battery lamps . . 
 switch boards ......... 
 
 traction 
 Electrical engineering ...... 
 
 instruments and meters 
 static apparatus 
 Electricity 
 
 applied to mining 
 asynchronous machines.. . 
 central stations , ... 
 continuous current mo- 
 
 tors 
 dynamo electric ma- 
 
 chines 
 
 generation of 
 industrial applications . . 
 transmission of ........ 
 
 stationary induction ap- 
 
 paratus 
 
 synchronous machines . 
 Electrostatic separators .... 
 
 622.211.11 
 .211.24 
 
 553-6 
 
 553 
 
 622.9 
 
 921.5 
 -921-4 
 188.6 
 .07 
 
 622.921.11 
 
 622.186.2 
 238.24 
 236.1 
 673.4 
 
 621.32 
 
 622.471-2 
 663 
 236 
 
 621.35 
 622.238.25 
 
 -474-4 
 621.317 
 33 
 .3 
 .37 
 314 
 
 393 
 
 .312.6 
 
 311 
 
 312.34 
 
 312 
 31 
 .39 
 .34 
 
 313 
 .312.4 
 622.775 
 
 Elevators, hydraulic 622.322.5 
 
 mill 793.4 
 
 Elmore flotation process .... .768.1 
 
 Emerald 553.831 
 
 Emery 658 
 
 Empire drill 622.242.7 
 
 Employers' liability 896.1 
 
 Engine planes .642 
 
 Engines, compressed air ... 621.42 
 
 gas 43 
 
 hot air 41 
 
 oil 43 
 
 portable 15 
 
 stationary .16 
 
 steam, design of .11 
 
 traction 14 
 
 Enginers, consulting 622.922.4 
 
 mining .922 4 
 
 Engineering staff 922.4 
 
 England, mines of, etc.... .184.2 
 English method of enlarg- 
 ing tunnels 622.263.41 
 
 Epigenetic deposits 553-H2 
 
 Equal altitudes of stars 622.142.14 
 
 Erosion and deposition .... 551.3 
 
 Essays 04 
 
 Ethics of mining 622.896.1 
 
 Etiquette of miners 893 
 
 Eucalyptus 281.3 
 
 Europe, mines of, etc 184 
 
 Evaporation -5H-5 
 
 Examinations .009 
 
 Excavation 21 
 
 Executive -OOS 
 
 Exploration 622.1 
 
 Explosions of coal dust .812 
 
 of fire damp.... .811 
 Explosives, handling and 
 
 storage of 237.5 
 
 high 237.2 
 
 kinds and care of 237 
 
 low 237.1 
 
 permissible 237.5 
 
 thawing 237.63 
 
 accidents from (See ac- 
 cidents) 
 
THE COLORADO SCHOOL OF MINES. 
 
 97 
 
 Extraction 
 
 . 622.6 
 
 F. 
 
 Failures in mining 622.913 
 
 Fall of ground .83 
 
 Falls (See accidents) 
 
 Fans 44 
 
 Capell type 443-4 
 
 centrifugal 443 
 
 construction of fan house .446.2 
 description of various. . .448 
 
 disc . . . '. -444 
 
 general notes on -44 1 
 
 Guibal type -443-3 
 
 location of 446.1 
 
 modern steel plate . . .,. -443-5 
 
 motive power for .445 
 
 multivane 443-6 
 
 setting and reversing... .446 
 theory and calculations 
 
 of 447 
 
 Waddle type 443-2 
 
 (See blowers) 
 
 Fatal and non-fatal acci- 
 dents in coal mines 854 
 
 in metal mines .... .853 
 
 Faulted areas, locating 162 
 
 Faults, normal 161.1 
 
 reverse .161.2 
 
 theory of .16 
 
 Federal bureau of mines... .875 
 inspection of mines .872 
 
 Feeders, ore -793- 2 
 
 Field prospecting 122 
 
 Filing information 965 
 
 Filling, waste 289.2 
 
 systems in mining . .354 
 
 Final surveys .132 
 
 Fire damp explosions 811 
 
 Fires 82 
 
 description of coal mine .828 
 metal mine .827 
 
 Firing blasts 238.2 
 
 First aid, meets 863.6 
 
 work 863 
 
 Flooding of mines .84 
 
 Flotation 622.76 
 
 principles and theory of .767 
 
 processes 768 
 
 Flow sheets of concentra- 
 tors 798 
 
 Fluorspar 553-863 
 
 Flushing 622.289.21 
 
 Foundations, for machinery .29 
 for mill machinery .792 
 
 Forest reserves 125.1 
 
 Forge shop 621.73 
 
 Foundry .72 
 
 Framing timbers (See tim- 
 bering) 
 
 France, mines of, etc 622.184.4 
 
 Frauds, mine 914 
 
 Freezing method of shaft 
 
 sinking 253 
 
 Fresno 214.2 
 
 Fuller's earth 553-864 
 
 Fulminates 622.237.21 1 
 
 Furnaces for ventilation .... .43 
 Fuses 238.22 
 
 G - 
 
 Garnet 553-893 
 
 Gas, acetylene 622.471.33 
 
 natural 553-28 
 
 Gases, pneumatics 533. 
 
 Gas, engines 621.43 
 
 for illumination 622.471.3 
 
 Gases met with in mines. . . .412 
 Gas and gasolene haulage. . . .664 
 hoists . . . -673.5 
 
 Gasolene illuminators -471-4 
 
 Gathering .666 
 
 Gauge, track 623.1 
 
 Gelatine dynamites 237.222 
 
 Gem mining .38 
 
 Gems 553.8 
 
 Geodesy 526. 
 
 Geology 550 
 
 Geology of ore deposits ... 622.111 
 Germany, mines of, etc. . . . .184.3 
 
 Gilsonite or uintaite 553-274 
 
 Gold, mining 622. .441 
 
 ores of 553-41 
 
THE COLORADO SCHOOL OF MINES. 
 
 saving tables 
 Gossan 
 Government land subdivision 
 
 622.326.27 
 
 553-34 
 622.125.3 
 
 Hoisting, engines 
 drums, spools and reels, 
 indicators 
 
 622.673.3 
 .674 
 677 
 
 Grab-bucket dredges 
 
 217 I 
 
 mechanical 
 
 671 
 
 Graders, elevating 
 
 .215 
 
 of water 
 
 cc 
 
 Grades for haulage 
 
 
 ropes 
 
 678 
 
 Grahamite 
 Granites 
 Grants, land 
 ( iraphite 
 
 553-273 
 52 
 622.125.2 
 
 CC-2 26 
 
 systems and problems . . 
 Hoists, arrangement of wa- 
 ter 
 compressed air 
 
 .676 
 
 553 
 673 i 
 
 Gravel elevators 
 Gravity handling ore by. . . . 
 
 622.322.54 
 .613 
 
 efficiency of water 
 electric 
 
 552 
 
 677 A 
 
 planes 
 Green sand 
 
 .641 
 553.645 
 
 gas and gasolene ...... 
 principles of water . . 
 
 673-5 
 
 Grinding pans 
 
 622 7^6 
 
 steam 
 
 677 2 
 
 Ground sluicing 
 Guano 
 Guiana, mines of, etc 
 Gums, fossil 
 Gun cotton 
 Gypsum 
 
 .322.15 
 553.644 
 
 622.189.5 
 
 553.29 
 622.237.213 
 ^ 6^8 
 
 Hollow rod drilling 
 Hornspoon j 
 
 Hospitals 
 underground 
 Hospital funds 
 
 .242.5 
 .123.6 
 
 323-II 
 .883.2 
 .883.21 
 
 88^ 3 
 
 Gyratory crushers 
 H. 
 1 lammer machine drills .... 
 
 Hand augurs - 
 Hand books 
 
 622.732.2 
 
 622.235 
 .241 
 .232.22 
 03 
 
 Hot mines, cooling of 
 Human side of mining .... 
 Humidification of mines. . . 
 Humidity of air 
 Hungarian riffles 
 Huntington mills 
 Hydraulic cartridge 
 
 .411.4 
 .896 
 .485-12 
 .464 
 323-225 
 735-2 
 2^7 42 
 
 Handling explosives 
 
 .237.6 
 
 elevators 
 
 322 S 
 
 Handling mineral at work- 
 ing place 
 Hard pan 
 Haulage, animal, under- 
 
 .611 
 
 .211.12 
 
 giants and monitors . . . 
 gradient 
 installations 
 ram 
 
 .322.4 
 
 513 
 .322.1 
 
 .547.9 
 
 ground 
 
 .652 
 
 rotarv drills 
 
 2363 
 
 locomotives 
 
 662 
 
 
 
 mechanical 
 
 .66 
 
 
 243 
 
 rope 
 
 .661 
 
 Hydraulicking . -s 
 
 54/- u 
 .219 
 
 Headframes 
 Headgates 
 
 .287.5 
 .322.11 
 
 Hydrodeik 
 
 .322 
 .464.2 
 
 Headlines, working on 
 
 .326. 1 7 
 
 Hygrometer 
 
 o3 2 
 622 464 i 
 
 Health and care of workmen 
 Hiddenitc 
 High explosives 
 Histories of miners 
 
 .88 
 553.897 
 622.237.2 
 897 
 
 Illuminators 
 Incandescent electric lights 
 
 622.471 
 471 2S 
 
 of mining men . . . 
 History 
 
 .898 
 
 .00 
 
 Incline skips 
 India, mines of. etc. . 
 
 685 
 622.18=;. 4 
 
THE COLORADO SCHOOL OF MINES. 
 
 Indicators . 622.677 
 
 Indices .02 
 
 Indicolite 872 
 
 Injuries (See accidents) 
 
 caring for (See rescue 
 
 and relief) 
 Inspection of mines 622.87 
 
 company 874 
 
 state 873 
 
 Inspectors, company .874.11 
 
 state 873.2 
 
 Institutions for miners .... .88 
 Instruments for surveying.. .141 
 
 adjustment of -I4I-7 
 
 repair of .141.8 
 
 Insurance, miners .855 
 
 Iodine 
 
 Ireland, mines of, etc 
 
 Iridium 553.492 
 
 Iron mining 622.346 
 
 ores of 553.3 
 
 Isolated islands, mines of, 
 
 etc 622.189.7 
 
 Italy, mines of, etc -184.5 
 
 J. 
 
 J ade 553-899 
 
 Japan, mines of, etc 622.185.2 
 
 Jasper 
 
 Jigging 
 
 laws of 
 
 Jigs, coal washing ......... 
 
 kinds of 
 
 operation of 
 
 Joints, cleavage, polarity in 
 rocks 
 
 K. 
 
 Kind-Chandron method .... 
 Koepe hoisting system .... 
 Kunzite . 
 
 Labor, mine . 
 child 
 
 convict . . 
 kinds of 
 organized 
 
 553-882 
 
 622.75 
 -751 
 753-: 
 753 
 752 
 
 622.254 
 
 -676.3 
 553.898 
 
 622.923 
 .923.17 
 .923.16 
 .923.1 
 -93 
 
 unions, organization of. 
 
 payment of 
 
 unions, responsibility of 
 treating with . . 
 
 Laboratories 
 
 Lamp stations 
 
 Lamps, acetylene 
 
 for mine use 
 Land grants 
 
 subdivisions 
 
 Launders 
 
 Laws 
 
 Lead, mining 
 
 ores of 
 
 Leasing of mines 
 
 Ledgers 
 
 622.184.1 Levels . 
 
 ( 
 Liability for accidents 
 
 Liabilities of stockholders.. 
 
 Life of miners 
 
 Lighting of mines 
 
 Lignite and jet 
 
 Limestones 
 
 Liquids, hydrostatics, hy- 
 draulics 
 
 Listing stocks 
 
 Lithium 
 
 Lithographic stone 
 
 Lithology, petrography, pet- 
 rology 
 
 Litigation, mining 
 
 Loading and unloading ore. 
 Locomotives 
 
 compressed air 
 
 drawbar pull 
 
 electric 
 
 gathering 
 
 rating of 
 
 steam 
 
 types of 
 
 Lode claims, acquiring .... 
 size and shape of 
 
 Log washers 
 
 Long wall in coal mining. . 
 Lubricants 
 
 622.931 
 .924 
 
 932 
 -932 
 
 -877 
 
 331-9 
 
 -474-2 
 
 474 
 
 .125.2 
 
 125-3 
 
 793-6 
 
 .007 
 
 622.344 
 
 553-44 
 
 622.942 
 
 622.954.6 
 347-51 
 .141.3 
 .856 
 .918.4 
 .891 
 47 
 
 553-22 
 .681 
 
 532 
 622.917.3 
 
 .696 
 
 622.913.3 
 .697 
 
 621.13 
 
 622.662.2 
 .665.1 
 -663 
 .666 
 -665 
 .662.1 
 
 621.132 
 
 622.125.4 
 .131.2 
 
 337 
 621.80 
 
TOO 
 
 THE COLORADO SCHOOL OF MINES. 
 
 M. 
 
 Machine drills, operation of. 622.333 
 
 Machine parts, design of 621.8 
 
 shop .71 
 
 tools 9 
 
 Machinery 008 
 
 handling and erecting... 622.29 
 
 of transmission 621.8 
 
 Macquisten's flotation pro- 
 cess 622.768.5 
 
 Madagascar, mines of, etc.. .186.9 
 
 Magazines . . .05 
 
 Mlagmatic segregations m.i 
 
 Magnesite 672 
 
 Magnetic roasting 622.772 
 
 separation -77 
 
 principles and the- 
 ory 771 
 
 surveys 15 
 
 Magnetometer 123.2 
 
 Malaysia, mines of, etc 189.1 
 
 Maltha 553-275 
 
 Mammoth pump 622.252.35 
 
 Management of mines 9 2 
 
 general principles of . . . .921 
 
 Managers 922.1 
 
 Manganese, ores of 553.461 
 
 Manometer 622.461.1 
 
 Manufactories 621.7 
 
 Maps 004 
 
 assay 622.146.13 
 
 coloring .146.28 
 
 filing 146-3 
 
 geological .146.12 
 
 making mine .146.2 
 
 of mine surveys 146 
 
 prints and tracings 146.29 
 
 topographic 146.21 
 
 Marble 553-51 
 
 Materials of excavation, 
 
 classification of 622.211.1 
 
 measurement of .211.2 
 
 Mathematics 
 
 Measuring materials of ex- 
 cavation 21 1. 2 
 
 Mechanical haulage 622.66 
 
 ventilators 44 
 
 Medical aid for workmen.. .883 
 
 Meerschaum 553-693 
 
 Mercury, ores of .453 
 
 Meridian, carrying under- 
 ground 
 
 determination of 622.142 i 
 
 Metal mining .34 
 
 mines, development of.. .347 
 
 Metamorphism . . .- 55^6 
 
 Meteorology .5 
 
 Mexico, mines of, etc 622.187.2 
 
 acquiring mineral lands 
 
 in 127 
 
 Mlica 553-694 
 
 Mill buildings, construction 
 
 of 622.791 
 
 Milling or. mill holing 319 
 
 Milling (See dressing works) 
 
 Mill-run samples .174.21 
 
 Mill sites 125.6 
 
 Mills, accessory apparatus in .793 
 
 concentration -799 
 
 sampling .797 
 
 testing 797 
 
 (See concentrators and 
 ore dressing works) 
 
 Mine surveying .14 
 
 Mineral industry OOi 
 
 lands .125 
 
 surveys 13 
 
 veins 553-19 
 
 waters -7 
 
 Mineralized areas 622.112 
 
 Mineralogy 549 
 
 Miners, and mining men... 622.89 
 
 of all ages 895 
 
 Mines and mining districts. .18 
 
 Mining, districts 18 
 
 ethics 896.1 
 
 Model towns .882.3 
 
 Models, mine 147 
 
 construction of -147-3 
 
 Modified square sets .286.36 
 
 Molybdenum 553-49* 
 
THE COLORADO SCHOOL ' OFr.MlNES. 
 
 Monazite 553-691 
 
 Monorail 622.643 
 
 Moonstone 553 894 
 
 Moral responsibilities 622.896.2 
 
 Morganite 553-833 
 
 Morocco, mines of, etc 622.186.4 
 
 Mortar blocks . 734-3 
 
 Mortars 734-4 
 
 Motive column : . .421.1 
 
 Motive power for mine fans .445 
 Motors (See electricity) 
 
 N. 
 
 Natural coke 553-26 
 
 ventilation 622.421 
 
 New Guinea, mines of, etc.. .189.5 
 
 Nickel, ores of 553-48i 
 
 Niter, soda 635 
 
 Nitrate or ammonia dyna- 
 mites 622.237.223 
 
 Nitrates, mining of .39 
 
 Nitroglycerine ' 237.212 
 
 Nitroglycerine, dynamites . . 622.237.221 
 
 Nitrostarch 237.214 
 
 explosives 237.225 
 
 Nitrotoluene dynamites .... .237.224 
 North Africa, mines of, etc .186.1 
 North America, mines of, etc .187 
 
 Norway, mines of, etc 184.8 
 
 Note books .145 
 
 Notes, filing .965 
 
 keeping field .145.2 
 
 keeping mine .96 
 
 Nubia, mines of, etc .186.2 
 
 O. 
 
 Ocher 553-695 
 
 Officials, qualification of.... 622.928 
 responsibilities of mine. .927 
 Oil (See lubricants) 
 
 engines 621.43 
 
 for lamps 622.474.35 
 
 Onyx 553-884 
 
 Opal 85 
 
 Open shop 622.932.1 
 
 Open working 31 
 
 Ore, blocked out i75-ii 
 
 bodies, calculating value 
 
 of 
 
 sampling 
 
 shoots 
 
 contracts 
 
 marketing of 
 
 purchasing 
 
 deposits 
 
 dressing 
 
 hand 
 
 theory, preliminary 
 operation, etc. . . . 
 
 works 
 
 pockets 
 
 thefts 
 
 Ores, mixing and grading. . 
 Organization of mine force. 
 
 Origin of float 
 
 Osmium 
 
 Overburden for open pit 
 
 work 
 
 Over-casts 
 
 Over-winding devices 
 
 Oxygen, requirements of 
 
 human system 
 
 breathing apparatus, self 
 
 contained 
 
 stationary 
 
 reviving apparatus 
 
 Ozocerite 
 
 P. 
 
 Palladium 
 
 Pan, gold . . 
 
 Panning 
 
 Panel system in coal mining 
 Paraguay, mines of, etc. . . . 
 
 Pass-bys 
 
 Patents 
 
 Patent surveys 
 
 Peeling mine timber 
 
 Pearl 
 
 Percussion, core drill 
 
 Peridot 
 
 Periodicals 
 
 Permissible explosives 
 
 622.175.2 
 
 .174 
 
 .116 
 
 175.23 
 
 943-3 
 
 943 
 
 94 
 553-1 
 622.7 
 
 .72 
 
 7i 
 79 
 
 -347-53 
 .926 
 
 943-2 
 .922 
 -113 
 553-492 
 
 622.311.5 
 -451-4 
 
 .441.1 
 
 .862.3 
 .862.4 
 .862.5 
 553-272 
 
 553-492 
 622.323.11 
 
 .122.1 
 
 335 
 
 .188.9 
 
 .67 
 
 .008 
 622.132 
 
 .282.2 
 553.84 
 622.242.8 
 553.891 
 622.05 
 
 237-5 
 
" ' 77/ [COLORADO SCHOOL OV MINES. 
 
 Peru, mines of, etc 622.185.5 
 
 Persia, mines of, etc -155-5 
 
 Petrography, petrology 552 
 
 Petroleum 553-28 
 
 Philosophy of mining 622.01 
 
 Phosphate mining 39 
 
 Phosphates 553-6"4 
 
 Photography in mining 622.192 
 
 Physical and dynamical 
 
 geology 551 
 
 Physics 530 
 
 Picketing 622.934.4 
 
 Picking .12 
 
 Picks, kinds and use of .212.4 
 
 Piece work -924.4 
 
 Piling sheet -251.2 
 
 Pillar and stall 334 
 
 Pillars, ore 289.1 
 
 (See coal mining) 
 
 Pipe, anchoring in shaft. . . . .582.4 
 compressed air (See air 
 transmission) 
 
 laying 582.2 
 
 lines, care and life of. .582.3 
 
 lines 322.15 
 
 kinds of for mine use.. .582.1 
 threading machines .... 621.944 
 
 Piping, underground 622.582 
 
 Piston machine drills 234 
 
 Placer, acquiring -125.5 
 
 claims 131.3 
 
 dry machines .328 
 
 formation of .113 
 
 ground, sampling .174.6 
 
 mining (See hydraulick- 
 ing, dredging, etc.) 
 
 Planes, engine .642 
 
 gravity .641 
 
 Platinum 553-49* 
 
 wire indicators 622.414.2 
 
 Plowing 213 
 
 Plows, steam 213.2 
 
 Plug and feather 222.1 
 
 Plumbago 553-26 
 
 Plumb wires 622.143.4 
 
 Plumbing 143 
 
 Pneumatic caissons 
 
 \ 622.252.4 
 ' ] .264.4 
 
 Pneumatics 533. 
 
 Polaris, observation of 622.142.11 
 
 Pole tool boring .242.6 
 
 Polynesia, mines of, etc.... .189.6 
 
 Porphyries 553-56 
 
 Portland cements 686 
 
 Portugal, mines of, etc 622.184.6 
 
 Positive ore .175.12 
 
 Possible ore .175.14 
 
 Potter and Delpratt flota- 
 tion process .768.2 
 
 Power, in milling .794 
 
 plants 621.10 
 
 Powder, black 622.237.11 
 
 smoke 412.1 
 
 thawing 237.63 
 
 (See explosives) 
 
 Practical mining 2 
 
 Pozzuolan cement 553-683 
 
 Preliminary washers 622.757 
 
 Premiums in contract work. -941-3 
 Preservatives, kinds of .... .283.2 
 Preserving mine timber .... .283 
 
 Pressure boxes 622.322.16 
 
 Pressures, rock 284 
 
 Printing 193 
 
 Prisons 884 
 
 Probable ore I75-U 
 
 Progress of mining .09 
 
 Prolonged pressure blasting -237.4 
 
 Promoters 915-2 
 
 Promotion, mine 915 
 
 Props or posts 285.1 
 
 Prospecting, practical meth- 
 ods 122 
 
 devices and tools for... .123 
 
 outfits 12! 
 
 theory of II 
 
 underground 124 
 
 Prospectuses, mining .191 
 
 Puddling box 323.14 
 
 ( -547-7 
 ' { .259.12 
 Pulverizers .737 
 
 Pulsometers 
 
THE COLORADO SCHOOL OF MINES. 
 
 103 
 
 Pummice 
 Pumps, adaptability and ef- 
 ficiencies of 
 
 553.653 
 
 622 Z.AZ 
 
 R.eports 
 Rescue and relief 
 
 622.009 
 622.86 
 86 1 
 
 care and operation 
 air lift 
 centrifugal 
 Cornish 
 
 -546 
 547-8 
 
 -547-5 
 e-i 
 
 in irrespirable at- 
 mospheres 
 stations 
 
 .862 
 .862.6 
 
 descriptions of pump in- 
 
 
 Resins 
 
 ce-i 2Q 
 
 stallations 
 details of 
 high pressure 
 injector . . . 
 
 549 
 .548 
 545-1 
 
 ^47 6 
 
 Responsibility of labor un- 
 ions 
 of mine officials. . 
 
 622.932 
 927 
 
 low pressure 
 operating by compressed 
 air 
 
 545-2 
 542 
 
 Reversing fans 
 Reviving apparatus 
 Riffles 
 Risks mining 
 
 .446 
 .862.5 
 .323.22 
 
 QI2 
 
 electricity 
 steam 
 sinking 
 triplex, quintuplex 
 types of 
 Purchasing agents 
 
 543 
 541 
 547-4 
 547-2 
 547 
 .922.6 
 
 Roadbed, underground 
 Roads, underground . 
 Rock pressures 
 
 Rocker - 
 Rocks weights of 
 
 .623.4 
 .62 
 .284 
 .123.6 
 .323.12 
 2842 
 
 of ore 
 
 04 
 
 
 
 
 
 Roll crushing, principles of. 
 Rolls 
 
 732.1 
 7^2 
 
 Q. 
 
 Quantities 
 Quarrying 
 
 .002 
 622.22 
 
 care and operation of. . 
 corrugated or toothed. . 
 repairing shells 
 
 732-3 
 -732-7 
 7^2 4 
 
 rough stone 
 squared rock 
 Quartz gems 
 
 R. 
 
 .221.2 
 .221.1 
 
 553-88 
 
 rigid 
 vertical, triplex 
 Roofs, action of different... 
 Room and pillar coal mining 
 Rope haulage . . 
 
 .732.6 
 732.8 
 .284.3 
 
 333 
 661 
 
 Rack rail 
 Radium 
 Rail fastenings 
 
 622.662.12 
 
 553-492 
 622.623.52 
 
 ways, wire 
 Ropes, hoisting and haulage, 
 splicing of 
 
 .69 
 .678 
 6786 
 
 Railroads, underground .... 
 
 .623 
 
 Rotary blowers 
 
 442 2 
 
 Rails 
 
 62^ m 
 
 
 
 Rainfall 
 
 511 
 
 Royalties 
 Rubellite 
 
 .942.4 
 
 CC7 871 
 
 Rare metal mining 
 
 346 
 
 Ruble elevator 
 
 622 322 6 1 
 
 Recording data 
 
 .96 
 
 Ruby 
 
 CC7 821 
 
 Reels, hoists 
 
 674 
 
 
 
 Referendum votes 
 Regulation of mining compa- 
 nies 
 
 933-3 
 916 
 
 Rules and regulations, mine. 
 Runoff 
 
 s 
 
 622.925.1 
 .511.4 
 
 Regulators 
 Relation of mine officials to 
 society 
 Repair of instruments 
 
 453 
 
 927 
 .141.8 
 
 Sack borer 
 Safety devices ..... j 
 lamps 
 
 622.33 
 .688 
 .677 
 474-31 
 
104 
 
 THE COLORADO SCHOOL OF MINES. 
 
 Saefty lamps, testing by. ... 
 
 Salt 
 
 mining 
 
 Salting mines 
 
 Samples, cutting and grind- 
 ing 
 
 Sampling 
 
 bore holes . . . . 
 
 coal seams 
 
 devices in mills 
 
 mills ' 
 
 placer ground 
 
 Sands 
 
 Sand stones 
 
 Sanitary ararngements, 
 
 surface 
 
 underground 
 
 Sapphire 
 
 Schools 
 
 Scientific management 
 
 Scotland, mines of, etc 
 
 Scrapers - 
 
 Screening 
 
 Screen cloths 
 
 sizing, principle of 
 
 Screens and sizers, kinds of 
 
 Script 
 
 Seepage, 
 
 conditions affecting .... 
 
 waters 
 
 Search lights 
 
 Seasoning timber 
 
 Self acting inclines 
 
 Selling mines 
 
 Self dumping carriers . . . . j 
 
 Separation, magnetic 
 
 Serpentines 
 
 Shaft indicators 
 
 concrete lining 
 
 sets 
 
 sinking 
 
 in rock 
 
 handling water in... 
 
 622.414.1 
 
 553-63I 
 622.36 
 
 .914.2 
 
 .174.9 
 
 174 
 
 .174-8 
 
 1747 
 
 793-8 
 
 797 
 
 .174.6 
 
 553-62 
 53 
 
 622.882 
 .881 
 
 553-822 
 622.886 
 .921.6 
 .184.1 
 .214 
 
 314 
 .321.2 
 
 74 
 .742 
 .741 
 622.743 
 .942.2 
 
 .512.2 
 
 512 
 
 .471.21 
 
 .282.3 
 
 .641 
 
 9I5-4. 
 .321.4 
 
 317 
 
 -77 
 
 553-55 
 622.677.2 
 
 256 
 
 .286.6 
 
 25 
 
 255 
 
 -259 
 
 timbering 
 steel sets 
 
 in over 
 
 Shafting 
 
 Shafts, concrete drop 
 
 timber lined 
 
 burden 
 
 shape of 
 
 Shanties, mine 
 
 Shearing machinery 
 
 Sheaves for hoist 
 
 for tracks 
 
 Sheets, turn 
 
 Shield method of shaft sink- 
 ing 
 
 Shift bossess 
 
 Shipping explosives 
 
 Shooting off the solid 
 
 Shops, arrangement of build- 
 ings 
 
 blacksmith or forge . 
 
 machine 
 
 woodworking 
 
 Shoveling 
 
 Shovels, kinds and use of.. 
 
 steam 
 
 Shrinkage stoping 
 
 stopes 
 
 Siberia, mines of, etc 
 
 Sidings 
 
 Sights for surveying 
 
 Signal codes 
 
 devices 
 
 Silver, mining 
 
 ore of 
 
 Sinking drums 
 
 frames 
 
 shafts 
 
 Siphons 
 
 Skips 
 
 Slates 
 
 Sliding scales 
 
 Slime, settling and thicken- 
 ing 
 
 treatment 
 
 principles of 
 
 Slimers, table 
 
 622.255 
 257 
 621.82 
 622.252 
 
 255 
 .256.1 
 
 331-9 
 
 621.96 
 
 622.678.8 
 .623.8 
 .623.72 
 
 .252.6 
 .922.3 
 .237.61 
 
 -332.7 
 
 621.702 
 
 73 
 
 .71 
 
 74 
 622.212 
 
 .212.5 
 
 .216 
 
 -271.7 
 
 -351 
 
 -185-7 
 
 -331.8 
 
 .I4I-5 
 
 -677 
 
 .677.4 
 
 431 
 553-42 
 622.2525 
 
 -255-13 
 
 -25 
 
 522.3 
 
 .684 
 553-54 
 
 .924-3 
 
 622.762 
 -76 
 .761 
 -763 
 
THE COLORADO SCHOOL OF MINES. 
 
 105 
 
 Slimers, traveling 
 
 miscellaneous 
 Slope landings . . . 
 Slopes 
 
 belt.. 
 
 Sluice 
 
 Sluices, construction of .... 
 grade and capacity of . . 
 
 Sluicing . j 
 
 ground . . . 
 
 Smoke consumption and pre- 
 vention 
 
 Soapstones 
 
 Social clubs 
 
 Societies 
 
 Society, relations of offi- 
 cials to 
 
 Sociology 
 
 Soda niter 
 
 Sodium carbonate 
 
 sulphate 
 
 South Africa, mines of, etc. 
 South America, mines of, etc 
 South Central Africa, mines 
 
 of, etc 
 
 Spain, mines of, etc 
 
 Spar 
 
 Specifications 
 
 Spikes, track 
 
 Spiling 
 
 Splicing of ropes 
 
 Spools, hoist 
 
 Spring pole drilling rig 
 
 Springs 
 
 Sprinkling coal dust 
 
 Spuds, working on 
 
 Square sets 
 
 mining by 
 
 Squibs 
 
 Stables 
 
 Stamp mills 
 
 Stamps 
 
 gravity 
 
 hydraulic 
 
 pneumatic 
 
 622.764 
 .766 
 331.8 
 331.2 
 .123.6 
 .323 
 .323-2 
 .323-3 
 .123.6 
 
 .323 
 .322.2 
 
 621.184.4 
 
 553-55 
 622.885 
 .06 
 
 622.927 
 
 .8 
 553.635 
 
 634 
 
 .633 
 622.186.8 
 
 .188 
 
 .186.7 
 .184.6 
 
 553-861 
 .003 
 
 622.623.53 
 .251.21 
 .678.6 
 .674.4 
 .242.2 
 -5i6 
 .485-11 
 .326.18 
 .286.3 
 352 
 .238.21 
 331-9 
 79 
 73 
 734 
 733-3 
 733-2 
 
 spring 
 
 steam 
 
 Standard drilling rig 
 
 Stars, equal altitude of. ... 
 
 Stationary engines 
 
 Stations 
 
 for surveying 
 
 for timbering shaft. . . . 
 
 Statistics 
 
 Steam boilers 
 
 economy 
 
 engine governors 
 
 mechanism of .... 
 valves 
 
 engineering 
 
 generation 
 
 heating 
 
 jets for ventilation . . . 
 
 plows 
 
 points 
 
 power plants 
 
 scrapers 
 
 shovel, underground . . 
 shovels 
 
 transmission and distri- 
 bution 
 
 Stocks, listing 
 
 speculation in 
 
 watered 
 
 Stockholders 
 
 liabilities of 
 
 protection of 
 
 Stocks 
 
 Stokers, mechanical 
 
 Stopes, survey of 
 
 Stoping 
 
 Stoppings 
 
 Storage, battery lamps 
 
 of electricity 
 
 Stores, company 
 
 Stratification . 
 
 622.733.4 
 733-1 
 .242.3 
 .142.14 
 
 621.16 
 
 622.347.53 
 .141.5 
 .287.3 
 .001 
 
 621.181 
 17 
 .115 
 .II 
 
 .116 
 
 .18 
 .19 
 
 622.43 
 .213 
 .327.43 
 
 621.10 
 622.214 
 
 .314.4 
 
 .321.2 
 
 .612 
 
 .216 
 
 .315 
 
 .321.7 
 
 621.186 
 622.917.3 
 .917.4 
 .917.5 
 .918 
 .918.4 
 .918.1 
 .917 
 
 621.184.1 
 622.144 
 
 .27 
 622.452 
 
 .474.4 
 621.35 
 
 622.888 
 551.81 
 
io6 
 
 THE COLORADO SCHOOL OF MINES. 
 
 Stratigraphical geology, 
 
 Archean, Cambrian, etc.. 551.7 
 
 Strength of materials 620.1 
 
 Strikes 622.933 
 
 sympathetic 933.2 
 
 Structural geology 551-8 
 
 Structure of earth as a 
 
 whole . .1 
 
 Study 
 
 Subdividing government land 
 
 Sulphur 
 
 Sumps 
 
 Sunda, mines of, etc 
 
 Superintendents 
 
 Superstitions 
 
 Supplies, economy in pur- 
 chasing and consumption 
 of 
 
 Supply book 
 
 Supports 
 
 Surface drainage 
 
 transportation 
 
 Surveying 
 
 bore holes 
 
 for connections 
 
 methods at various 
 mines 
 
 mineral 
 
 notes 
 
 record of . 
 
 Surveys, special 
 
 Swamps 
 
 Sweden, mines of, etc 
 
 Swedish mining compass . . . 
 
 Switch boards 
 
 Switches 
 
 Syenites 
 
 Syngenetic deposits 
 
 T. 
 
 Tables 
 
 Tamping 
 
 Tapes 
 
 Tariffs on ores 
 Teaching 
 
 .08 
 
 622.125.3 
 
 553-862 
 
 622.523.4 
 
 .189.2 
 
 .922.2 
 
 .921.4 
 
 -954-3 
 .28 
 521 
 .69 
 
 14 
 
 .148 
 
 .148 
 
 .149 
 
 13 
 
 145 
 
 145 
 
 .148 
 
 523-5 
 .184.8 
 
 123-3 
 621.317 
 622.623.6 
 553-52 
 
 .in 
 
 622.08 
 238.13 
 .141.4 
 .698 
 .07 
 
 Telegraphs and telephones. . 621.36 
 
 Telephone instruments 621.366 
 
 pole lines 361 
 
 systems 365 
 
 Temperatures, determina- 
 tion of 622.463 
 
 Terminal stations .696 
 
 Testing, boilers 621.171 
 
 devices for prospecting. 622.123 
 
 engines 621.72 
 
 mills . ., 622.797 
 
 for mine gases 414 
 
 stone, concrete, cement. 620.3 
 
 Tests for gold 622.123 
 
 Thawing explosives .237.63 
 
 frozen gravel . . . .327.4 
 
 Thermometer .463.1 
 
 Theses, mining .04 
 
 Threading machines 621.944 
 
 Ties 622.623.8 
 
 Timber and stone entries... .125.7 
 
 for mine use .281 
 
 Timbering 622.28 
 
 Timbers 281 
 
 preserving mine .283 
 
 Time book 954-2 
 
 Tin, mining .343 
 
 ores of 553-452 
 
 Tipples 622.695 
 
 Titanium 553-492 
 
 Tom 622.323.13 
 
 Tools, machine 621.9 
 
 Top slicing 622.355 
 
 Topaz 553-892 
 
 Torches 622.473 
 
 Tourmaline 553-87 
 
 Towers for tramways 622-693.6 
 
 Track and incline .321.3 
 
 laying 623.8 
 
 underground -623.5 
 
 Traction, electric 621.33 
 
 Traditions, mine 622.894 
 
 Trails 692.4 
 
 Tramming, hand .651 
 
 animal haulage 65 
 
 Trams, car 63 
 
 Tramways, aerial -693.6 
 
THE COLORADO SCHOOL OF MINES. 
 
 Tramway stations 
 towers . ... < 
 
 622.693.67 
 .693-661 
 .287.8 
 
 .697 
 .141.2 
 621.34 
 
 622.176.3 
 .69 
 
 353 
 553-57 
 622.142 
 .282 
 .281 
 
 .122.2 
 .2877 
 942-5 
 .637 
 
 43 
 757-1 
 .738 
 553.58 
 .492 
 622.267 
 .262 
 .264.3 
 .125-6 
 I3I-4 
 .26 
 .268 
 .261 
 .263.4 
 .261.5 
 264.5 
 621.24 
 622.185.8 
 .185.6 
 
 621.94 
 553-86 
 
 553-274 
 622.451.5 
 622.323.4 
 332 
 .187-3 
 
 Uranium 
 
 553-492 
 
 622.176 
 173 
 17 
 
 175 
 .171 
 
 .172 
 
 553-492 
 622.116 
 551-88 
 622.188.7 
 4 
 -415 
 43 
 415-4 
 .416.7 
 -46 
 .42 
 
 423 
 .416.8 
 
 .416 
 
 44 
 .211.25 
 
 622.924. i 
 .692.5 
 931-3 
 
 785 
 78 
 .784 
 .788 
 
 .786 
 757-2 
 757.1 
 
 .782 
 324-4 
 555 
 .522.22 
 
 vc. 
 
 Valuation, economic factors 
 in mine 
 of development 
 mines 
 
 Trans shipment 
 
 Transits 
 
 Transmission of electricity.. 
 Transportation, effect on 
 mine valuation 
 surface 
 Transverse stoping 
 Trap 
 
 ore bodies 
 surface equipment. . . 
 underground equip- 
 ment 
 
 Vanadium 
 Vegetation in prospecting. . 
 Veins, dykes, necks, bosses. 
 Venezuela, mines of, etc. . . 
 Ventilation, of mines 
 general principles of. ... 
 by furnaces and trompes 
 force and exhaust .... 
 laws of 
 measurements of 
 natural 
 
 Traverses 
 
 Trees, cutting and seasoning 
 for mine timber 
 
 Trenching 
 
 Trestles and bridges 
 Tribute system 
 Trolleys 
 
 Trompes ventilating 
 
 Trough washers 
 Tube mills 
 Tufa ' 
 
 of rise and dip workings 
 practical formulae .... 
 theory and calculation 
 on 
 
 Tungsten 
 
 Tunnel, alignment of 
 selection of sites 
 shields 
 
 ventilators, mechanical.. 
 Voids in broken stone 
 
 W. 
 
 Wages .... 
 
 sites 
 
 Tunneling 
 machines 
 Tunnels kinds of 
 
 Wagon roads 
 Walking delegates 
 Washing, accessory appara- 
 tus for 
 Washeries, coal 
 construction of 
 operation of 
 
 methods of enlarging. . . 
 railroad 
 stib-aquaeous 
 Turbines 
 
 Turkestan, mines of, etc. . . . 
 Turkey, mines of, etc. ...... 
 Turning and milling ma- 
 chines 
 Turquoise 
 U. 
 Uintaite or gilsonite 
 Undercasts 
 Undercurrents 
 
 Washeries, arrangement of 
 machinery 
 Washers, log 
 trough 
 Washing, theories and prin- 
 ciples 
 
 Waste 
 
 Undercutting 
 United States, mines of, etc 
 
 Water buckets and tanks... 
 carrying in adits 
 
io8 
 
 THE COLORADO SCHOOL OF MINES. 
 
 Water, courses 622.514 
 
 duty of 324.1 
 
 engines or motors 621.2 
 
 for concentration 622.795 
 
 Waters, magmatic 622.517 
 
 freezing in shaft . 
 
 gauge 
 
 ground 
 
 hoisting 
 
 level 
 
 lifters 
 
 rights, acquiring . 
 
 shed 
 
 skips 
 
 tank, methods of 
 
 ing 
 
 tight linings 
 
 transportation . . . 
 underground .... 
 
 554-2 
 
 .461.1 
 
 .517 
 
 55 
 
 513 
 
 322.55 
 
 .125.8 
 
 5II-3 
 
 556 
 
 557 
 
 56 
 
 .694 
 
 .514 
 
 wheels, impulse 621.21 
 
 Watered stock 622.917.5 
 
 Waters, acid 57 
 
 dump- 
 
 mine 
 
 seepage 
 
 testing mine 
 
 Way's pocket smelter . . . 
 
 Weirs 
 
 Well drilling methods . . 
 
 Wells, artesian 
 
 Wheelbarrows 
 
 Wild cat mines 
 
 Wire rope 
 
 ways 
 
 Women mine workers . . 
 
 Working of mines 
 
 Workmen's compensation 
 
 aid 
 
 dwellings . . . 
 
 Z. 
 
 57 
 
 512 
 
 572 
 
 .123.521 
 
 .322.13 
 
 .24 
 
 515 
 
 .914.1 
 .678 
 .693-6 
 .923.18 
 
 3 
 
 .924.7 
 
 855.3 
 .882.2 
 
 Zinc, mining 622.345 
 
 ores of 553-451 
 
14 DAY USE 
 
 RETURN TO DESK FROM WHICH BORROWED 
 
 LIBRARY 'SCHOOL" LIBRAE^ 
 
 This book is due on the last date stamped below, or 
 
 on the date to which renewed. 
 Renewed books are subject to immediate recall. 
 
 JAN 3 1963 
 
 NOV2 1 1964 
 
 General Library 
 
JJYAO 
 
 UNIVERSITY OF CALIFORNIA L/IBRARY