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Small Mining Operations

The Fire Assay of Carbon

Carbon, activated charcoal, or “char,” as some old timers refer to it, can be an assayer’s nightmare.

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Centrifugal bowls versus jigs

Spanish Gold Ledge Still Producing Gold


The Gold Eye placer claims, located in the La Cholla district of Arizona, are still producing some beautiful gold. From the days of the Spanish explorers and Mexican miners, men have tunneled into the earth in search of gold in this area.

Evolution Of A Desert Wash Plant


The water instantly dropped though the screen, leaving a pile of mud behind! I was so excited that I replaced it with a 150-mesh screen, and the same thing happened!

Setting Up A Placer Operation


Trommels come in two basic sections. The first section is called the scrubber unit. The second is the punch plate, where the gravels and ore of a specified size drop out into a variety of sluice box recovery units.

Tips and Tricks: How to Make Your Own Gold Bars Without Burning the Place Down


You find yourself with a bucketful of concentrates that you have accumulated over the season and consider the logical next step: to reduce the bucket of cons to a gold bar. Where do you begin?

Ancestral Yuba River Placer Gold Deposits


The small-scale miner has reasonable opportunity to exploit some of these small, rich placer gold deposits. 

Ask The Experts


Any good books on mineralized faults and contacts?

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