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The Fire Assay of Fly Eyes
July 2002 by Dr. Ralph E. Pray
Colorado-Utah-Wyoming oil shale was first reliably discovered to contain gold and silver by the U.S. Bureau of Mines in the 1920s. Although most of this vast shale resource, up to 1,000 feet in thickness, contained nil or barely detectable values, many brown shale samples fire assayed here over the past thirty years have yielded up to 0.02 ounces per ton (opt) Au and 2.0 opt Ag.GM to Cancel Mining Contracts
Governor Brian Schweitzer is calling on the Obama administration to force General Motors to honor its contract with a Montana mining company instead of going overseas to buy the precious metals used to control vehicle pollution.
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There was no evidence that anyone else had ever worked this gully with the exception of some old sample piles near the foot of the ravine.Ask the Experts
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Q: I was wondering how such a device could locate a rich gold vein in quartz, for example, since a metal like gold is non-magnetic.
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