Friday, December 17, 2010

Gold Mining Methods:Leaching

Leaching is the chemical process of removing gold from ore. Currently 80% of the world’s gold is recovered this way. It is also a process best left to the experts, as witnessed by the mercury poisoning fallout from old mines, and the gigantic cyanide spills from modern day gold mining tail ponds. Not only are substances like cyanide hard to obtain for the amateur prospector, they are dangerous to handle. Mercury has a lethal vapor, and the nitric acid used to clean it is also dangerous.

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