Gold dredge Wikipedia
Gold Dredge, Klondike River, Canada, 1915 The Yankee Fork dredge near Bonanza City, Idaho, which operated into the 1950s. A gold dredge is a placer mining machine that extracts gold from sand, gravel, and dirt using water and mechanical methods.. The original gold dredges were large, multistory machines built in the first half of the 1900s. Small suction machines are currently marketed as ...