Ask The Experts
Ask The Experts: What is a Spanish needle?
July 2017 by Chris Ralph
Some fellow in Texas was selling a Spanish needle—a dousing device used to recover minerals in the old days. Do you know anything about these?
Ask the Experts
Q: Can a voltmeter be used to determine the type of metal/mineral present in soil?
Ask the Experts - Processing sulfide ore without mercury or cyanide.
Q: ...Is there any way to process the ore without using mercury or cyanides...?
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Marketing other minerals recovered while gold mining
Ask The Experts - Were there insufficient values to continue mining at this site?
Were there insufficient values to continue mining at this site?
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How does one determine who owns a mining claim?
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