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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, multi-story machines built in the first half of the 1900s.
Gold prospector pouring water through his rocker box, Pinos Altos, New Mexico (1940). Rocker box exhibit at Dahlonega Gold Museum. A rocker box (also known as a cradle or a big box) is a gold mining implement for separating alluvial placer gold from sand and gravel which was used in placer mining in the 19th century.
Recreational gold mining and prospecting has become a popular outdoor activity several countries, including New Zealand (particularly in Otago), Australia, South Africa, Wales (at Dolaucothi and in Gwynedd), Canada and the United States especially. Recreational mining is typically small-scale placer mining but has been challenged for ...
In North America, placer mining was famous in the context of several gold rushes, particularly the California Gold Rush and the Colorado Gold Rush, the Fraser Canyon Gold Rush and the Klondike Gold Rush. Placer mining continues in many areas of the world as a source of diamonds, industrial minerals and metals, gems (in Myanmar and Sri Lanka ...
Pages in category "Mining equipment companies" The following 34 pages are in this category, out of 34 total. This list may not reflect recent changes. B. BelAZ;
Bucyrus-Erie was an American surface and underground mining equipment company. It was founded as Bucyrus Foundry and Manufacturing Company in Bucyrus, Ohio, in 1880.Bucyrus moved its headquarters to South Milwaukee, Wisconsin, in 1893.
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