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Placer mining,Wikipedia, the free encyclopedia Placers supplied most of the gold for a large part of the ancient world. Hydraulic mining methods such as hushing were used widely by the Romans across their empire ...

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Gold mining is the resource extraction of gold by mining. As of 2016, the world's largest gold producer by far was China with 463.7 tonnes. The second-largest producer, Australia, mined 287.3 tonnes in the same year, followed by Russia ...

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Placer Mining The stereotypical grizzled gold-rush prospector panning for gold was searching for "placer gold", or gold deposited in a waterway. Placer mining takes a variety of forms, including panning, "sluice-boxing", hydraulic ...

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