Ask The Experts
Ask The Experts—Using classifiers
December 2010 by Chris Ralph
Q: I would like to know how to use a classifier when I dump my gravel into my sluice box. I would also like to know what sizes classifiers come in. I know that they are in sizes like -3/4. What does the “minus” in the size mean? Thanks for any help you can give me.Ask The Experts: Is there a safe DIY alternative to cyanide or mercury for extraction?
Q: With safety as a given, what can the average miner, or Joe-blow greenhorn do to identify and extract some metals or minerals with off-the-shelf products or natural ingredients?
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Ore processing in California?
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Sampling and mining a historic mining claim
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Centrifugal bowls versus jigs
Ask The Experts—Where can I find information on the Abby mine?
Q: I would like to know where I can find information on the Abby mine located at Hildreth, CA.
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Q: How do metal detectors work around precious metal ore bodies?
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