December 2010
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.

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The Bawl Mill • Ask The Experts: Could you expand on your previous blasting article? • Ask The Experts: Equipment to break up heavy clay • Ask The Experts: Assay problem or recovery problem? • Legislative and Regulatory Update • Detecting Strategies for Heavily Forested Areas—Part II • The Winning Hand • Early Winter Detecting in the Sierras • Gangue Minerals - What Do They Tell Us? • Mining Districts in Montana Get Organized • Feds Deny Lease Renewals for Minnesota Mine • Obama Administration Moves to Block Mining Near Yellowstone • The Perfect Response • MMAC Update • Mining Stock Quotes and Mineral & Metal Prices • Melman on Gold & Silver

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