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Prospecting for Silver With a Geiger Counter
January 2001 by Edgar B. Heylmun, PhD
Light-colored volcanic tuff or tuffaceous sandstone often contains small amounts of uranium, enough to be detected with a sensitive radiation detector. Sometimes, the mass effect of the radiation is substantial.MMAC Update
In May 2017, the district participated in a meeting with representatives from several state and federal agencies where they educated agency officials about the authority of Mining Districts, Mining Law and miner’s rights.
Prospecting Underground: Use Caution
In underground placer work, the contact point of the bedrock tunnel and the gravel is a very weak point and always has to be timbered. The bedrock here is thin, fractured, and the gravels loose from many years of oxidizing.
Ask the Experts
Treating ore with a plasma torch or shock waves?
Benefits of a Detecting Partner
“Metal detecting is not a social function.” So said a good friend of mine. And it’s true. But that’s not to say the benefits of having a prospecting partner don’t outweigh those of being alone.
Picks & Pans: "Eye-Balling" for Alaskan Gold
The gold miner held out his hand and showed me a sixteen-ounce gold nugget, slightly coarse in texture, and resembling a biscuit. I shook my head in amazement as he pointed out the exact location of his lucky find.
Legislative and Regulatory Update
- Bill to limit Antiquities Act
- PLF seeks relief from Endangered Species Act abuses
Drive Under Way to Restore the Rights of Suction Dredgers
California Governor Schwarzenegger signed SB 670 on August 6, 2009, which temporarily halts suction dredging in California until a new Environmental Impact Report (EIR) is completed. This was despite a request from...
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