what does a sand dredging machine do?
Gold Dredge, Klondike River, Canada, 1915. The Yankee Fork dredge near Custer, 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, multi-story machines built in the first half of the 1900s.old Dredge, Klondike River, Canada, 1915. The Yankee Fork dredge near Custer, 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.