A black precipitate has collected onto the copper, which means there are precious metals present from the ancient river bottom sample, this sample was removed from the first two feet of overburden. now my summer project is to reach bedrock.
Metal Recycling Entrepreneur
A black precipitate has collected onto the copper, which means there are precious metals present from the ancient river bottom sample, this sample was removed from the first two feet of overburden. now my summer project is to reach bedrock.
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