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Gold mining is the resource extraction of gold by mining. As of 2014, the world's largest gold .. Other larger scale dredging operations take place on exposed river gravel bars at seasonal low water. . It is particularly appropriate for low grade gold and silver ore processing (e.g. less than 5 ppm gold) but its use is not.
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The design and placement of the process equipment should allow easy access for . During smelting operations, metal fumes can be a major problem. .. Gold mining is carried out on a small scale by individual prospectors (e.g., in China.
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