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Ask The Experts: Equipment to break up heavy clay

Q: I am looking for a “trommel machine” that doesn’t separate anything but clay slurry from rock hard clay.

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Determining the Amount of Gold in Rich Ores


This is just the type of specimen that could have been easily ignored by the old-time miners. It felt a little heavier in my hand than a chunk of quartz of that size ought to have been.

Ask The Experts: How do I identify gold in hard rock that may be mixed with other metals?


Q: Aside from the softness scratch test and other methods of identification, what feedback would you have on identifying gold in hard rock that may be mixed with other metals that affect its color?

Dry Washer, Wet System or Metal Detector?


I love to dry wash old nugget patches found by detector operators, and I have found my fair share of gold dry washing those areas. I have also found a few nuggets using a detector on the bedrock exposed by dry washing the patches.

Understanding Skim Bar Placers


Perhaps the most notable thing about skim placers is that they form on the top surface of gravel bars, as opposed to coarser gold placers where the weight of the gold particles allows the gold to settle down on or near bedrock.

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.

Finding Gold with a VLF Detector—Part I


The very first thing to find out...is if the detector has the ability to be ground balanced.

Alternative Gold Leaching Methods


The ideal leaching chemical would leave behind what we don't want or need in the ore and take only the valuable metals.

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The Bawl Mill   • Ask The Experts: Could you expand on your previous blasting article?   • Ask The Experts: “Energy” coming from black sand?   • 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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