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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.High Court to Rule on Kensington Tailings
A case before the Supreme Court could set a precedent for how mining waste is disposed of in streams, rivers, lakes and even wetlands.
The River Runs Through It
Why couldn’t we take some cold river water, pass it through some cooling coils and cool the air in the mine? This thought came to me one Sunday afternoon while fishing, knee deep, in the cold Coeur d’Alene River just west of Kellogg, Idaho.
Ask The Experts: Is this deposit worth working?
Q: Can you tell me if this deposit is worth working? It is a quartz vein and I had it analyzed for gold, copper, rare earths and other metals.
Melman on Gold & Silver
What gives this illustration great importance is America may be facing the same kind of dilemmas that have brought Japan’s market such long-term grief.
California: The Land of Big Nuggets—Part I
The nugget sat there in plain sight, though it was covered in dirt, while hundreds of people had passed that way every day.
Legislative and Regulatory Update
• More roadblocks to dredging in California
• Two Oregon Sheriffs challenge Forest Service authority
• Gold is money
EPA Chief to Reconsider Paying Claims Over Mine Waste Spill
“We feel that we can clean up an area that has been abandoned after 100 years of mining,” Lyon said.
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