December 2001 by Edgar B. Heylmun, PhDOnly the so-called “precious gems” will be considered in this article. They are diamond, ruby, sapphire, and emerald. A “gem” must be rare, hard, and durable, and possess a unique color or quality in order to be classified as a gem.
Recently, a left-leaning Arizona federal judge, James Soto, who is an Obama appointee, shut down a proposed copper mining project for the flimsiest of reasons. He basically disregarded and rewrote federal mining law.
"This is just the tip of the iceberg," Hill said. "It's going to take 200 years to dig it all out."
I am trying to find any information about using bubbles to separate platinum from sands and small particles. I think it has to have a surfactant in the process. Do you know of this bubble tech?
Is this a valid claim?
Revett Silver Company, formerly Sterling Mining Company, hopes to reopen a dormant copper and silver mine near Troy, Montana, in the next six months because higher copper prices have made the operation practical, an executive said.
• PLP continues the fight for miners' rights
• Oregon miners fight back
• Bills address strategic minerals
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