Ask The Experts
Ask the Experts
April 2012 by Chris Ralph
Q: Graphite spray to prevent sticking when using cast iron moldsAsk The Experts: Can you review the differences in dry washers?
Q: What are the advantages or disadvantages of hand crank vs. battery power vs. blower? And your preference?
Ask The Experts: Sulfides and fluxes
The concentrate is just the heaviest of the heavy minerals but some sulfides are sneaking in there also with the gold...
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What are these rocks?
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