Small Mining Operations
The Giant King Mine
July 2014 by W. Dan Hausel
Most gold-bearing veins in this region are controlled by fractures associated with the Melones Fault, a late Cretaceous structure that is 108 to 127 million years old.The Smell of Gold -- Part II
While mapping, I also found rock chips in the soil that were characteristic of the same wall rock alteration that occurs adjacent to the known lodes in the greenstone belt.
Hard Rock 101: Micro Blasting
Micro blasting can be used to take down hanging rock, separate minerals from overburden, and collect gemstones and other high-value product with minimal damage.
Principles of Designing Your Mill Production System, Part I: Starting Up
One of the issues that prospectors run into when working to upscale from micro-scale hard rock testing to a greater production output, is that they often confuse individual devices or machines with systems.
Principles of Designing Your Mill Production System, Part II: Mill Design
Starting small with quick profitability gives you a lot of financial elbow room plus real-world experience that can be used for final mill design.
Hidden Value in Old Tailings
The 15 rare earth elements were discovered long after the gold rush began to wane, but demand for them only took off over the past 10 years...
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!
Drywashing Arizona Gold
His findings were not exaggerated—after running 82 buckets of gravels in two days we had a remarkable 27.8 grams of gold!
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The Bawl Mill
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• Over the Divide
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• Gold Recovery with Centrifugal Bowls
• Mining on the Comstock Lode
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