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Prospecting for Silver With a Geiger Counter

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.

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Legislative and Regulatory Update


• USFS Draft Reclamation Bond Guide needs your comments
• Colorado seeks ownership of rights of way
• Comments needed for Sierra Nevada EIS
• Roadless rule to stand, with a few changes

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.

The Value of Evidence


That prospecting effort you are about to spend your time on...is it worth your effort? If you are going to devote your time to it, you will need all the facts you can get.

Legislative and Regulatory Update


• Forest Service to revisit 228 regulations
• WOTUS Executive Order suspended

Melman on Gold & Silver


Budgetary deficits can be reversed by a combination of only two factors; increasing revenues and decreasing expenditures, and we would prefer a combination of both factors occurring simultaneously. Unfortunately, it appears to us that President Obama failed to respond to such simple considerations.

Determining The Optimal Crushing Size for Gravity Recovery


It’s not easy to figure out what is best without testing, and so a certain level of confusion has developed about how small the ore ought to be crushed.

$50 Million Swiped in Diamond Heist


Eight masked gunmen forced their way through the security fence at Brussels’ international airport, drove onto the tarmac and snatched some $50 million worth of diamonds from the hold of a Swiss-bound plane without firing a shot.

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