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  • What is the role of cyanide in mining |…

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  • Early Gold Mining Techniques | Museum of Industry

    The machine, called an arrastre, used a giant stone attached to a wooden arm, moved by a horse,The rocks were ground over the ore, crushing it and releasing the gold.Later, cyanide was used to concentrate and extract gold from ore.

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    The process of extracting gold from ore is a multistep one, andThey feed the pebbles into other crushing machines to make a powder or slurry.A second treatment with a cyanide solution separates gold and silver from thehave used mercury amalgamation for centuries to extract gold from ore.

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