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October 2014 by Chris Ralph
• Sweep speed and sensitivity settings for a GPX-4500Ask The Experts - Is there a standard percentage given to land owners who hold the mineral rights?
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Good questions...from A to Z...
Ask The Experts: How do I identify gold in hard rock that may be mixed with other metals?
Q: Aside from the softness scratch test and other methods of identification, what feedback would you have on identifying gold in hard rock that may be mixed with other metals that affect its color?
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