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The History of Gold Mining in Sierra County
February 2010 by Frank Lorey III
There may be some truth to some of the fantastic claims. The Ruby Drift Mine near Forest City is where 159 nuggets were taken out between 1937 and 1942—a total of about 1,000 ounces with an estimated value of $1.5 million when gold was...
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Bacterial gold
Extraction of Precious Metals Using Froth Flotation
Without this versatile group of technologies, we would be hard-pressed to produce the metals so critical to our modern way of life. The robust mining industry of today would literally not exist.
Dredging Tips and Tricks: A Measure of Water Pump Efficiency
…as an academic argument, when mated to the appropriate engine, is the pump really moving water at the rate of 400 GPM?
The Bawl Mill
BLM Raises Location and Claim Fees
The Bureau of Land Management announced an increase in location filing fees and annual maintenance fees for unpatented mining claims, mill sites and tunnel sites.
Using Favorable Rock Types to Find More Gold
The more experienced prospectors know these lesser known spots are the types of places where big finds are still made.
Silver and Base Metal Deposits of the Pioche District
The areas that were mineralized with the bedded ore were huge and vast tonnages were indicated, although they had no idea at the time.
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The Bawl Mill
• Legislative and Regulatory Update
• Mining Reform and Congress
• Placer Mining in Canada's Yukon Territory
• California's Rich Pocket Mines
• The Significance of Boulders in Placer Deposits
• Oregon Suction Gold Dredgers Score Big Win
• Michigan Approves Nickel, Copper Mine
• Desert Drywashing
• Mining Stock Quotes & Mineral and Metal Prices
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