I ej F 931 .Y96 Copy 1 A, dredger; B. scow; C, sluice; D, hoisting apparatus and scoop; L, hydraulic pump for forcing water through sluices. Dred(5!rj(§ for Qold 09 t\)■ ' 00171876126 | Conservation Resources Lig-Free® Type 1 Pb 8.5, Buffered