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June 2015 by Chris Ralph
If it's gold, how should I clean it?Ask The Experts
Q: Conflicting advice on motorized small-scale mining equipment
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Bacterial gold
Ask The Experts: “Energy” coming from black sand?
Q: I have a question/request regarding some black sand left from my Dad’s prospecting days.
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• How small should I crush my hard rock ore?
Ask the Experts: VMS ore
Q: Are there any mills that handle VMS ore?
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Gold and silver in Pennsylvania
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Sulfides and oxides—what's the difference between the two?
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