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Uranium Deposits

The first reported occurrence of uranium in the United States was at Central City, Colorado, in 1871. However, prior to 1922, the ore was mined for its radium content, not uranium.

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The Hill of Gold


I was amazed and surprised, and I took a moment to admire how beautiful this coarse chunk of gold was. It later weighed exactly one-half ounce.

Elections May Bring Rush to Republic of Congo


Elections in the Republic of Congo may bring a mining boom to a country that has been ravaged by wars and corruption.

Spencer Opal Deposits, Idaho


In order to give the reader a better appreciation of some alternative valuable minerals that can be found by the average prospector, we visited Bob Thompson’s Opal Mountain Mine located in Spencer, Idaho.

Ask the Experts: gold per ton; improving assay method


Q: How much gold do I have per ton and how can I improve my assay method?

Ask the Experts


Q: Graphite spray to prevent sticking when using cast iron molds

California State Gold Panning Championships September 1-2, 2007


Ready, Set, Go! The stopwatch clicks on and the panner starts like being fired out of a cannon. It’s the Labor Day weekend and the State Championships are on their way.

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