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Ask The Experts - Need assaying advice

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• Gold in West Virginia?

Ask The Experts—Using classifiers


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 a detector any good at discriminating pyrite or chalcopyrite in ferrous-reject mode?


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