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—How do you determine how far a piece of gold has traveled in a stream?
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What to do with black sands
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Ask The Experts - Help with an assay report
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