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Prospecting & Detecting

All About Trommels and Screens for Placer Gold Recovery

The right speed accumulates only the heavy materials and allows all of the lighter stuff to flow through. This optimum speed is dependent on the size of the gravel you need to move through the system.

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ICMJ Visits Sonora, CA


The Birthday Nugget Patch


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Rocks and minerals associated with clay seam gold deposits in southern Oregon are often in sedimentary rock units at least partially metamorphosed into argillite. They are also associated with mafic volcanic rocks, basalts and gabbro that...

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The Bawl Mill   • Legislative and Regulatory Update   • Ask The Experts - How are gold veins formed?   • Ask The Experts - Is there gold in Monterey County, California?   • Ask The Experts - Can you explain NMR and satellite imagery?   • Ask The Experts - What other indicators are there besides red soils?   • Mineralization, Ground Balance and Metal Detecting   • Gold Prospecting for Better or Worse: Warning Signs   • What To Do With All That Gold?   • Proposed 100-Mile Road in the Yentna Mining District   • Judge Orders FBI to Produce Records on Civil War Gold Hunt   • Strategies for Detecting Heavily Pounded Areas—Pt II   • Auburn, California   • Old Water Channels Provide Important Clues   • The Mystery of the Grand Summit Mine   • Melman on Gold & Silver   • Mining Stock Quotes and Mineral & Metal Prices

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