Hydraulic and Placer Mining

Hydraulic and Placer Mining - by Eugene B. Wilson - This a great text on the subject of Placer Mining. Only a small portion touches Hydraulic Mining while most of the book covers subjects such as Geology of Placer Deposits, Placer Prospecting, Types of Riffles to use, Sluice boxes, Hydraulic Elevators, Drift Mining in Placer Deposits and much more.