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The Fire Assay of Fly Eyes

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.

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Legislative and Regulatory Update


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The Red Point Mine


Map of the Red Point Mine, California.This article is about the Red Point Mine, which was a buried intervolcanic channel and a very rich one.

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