All Articles
The Mountain Gate Mine
July 2007 by Don Robinson
The Foresthill Divide in Placer County, California, has underneath its present surface a multitude of buried river channels, most of which paid enormously well in the Gold Rush years of 1850 to 1890.
Additional articles that might interest you...
Oldest Journal Contest - The Winners
February 2009
We received entries from readers in fourteen states for our contest to find out who has the oldest surviving copy of the Journal, originally named the California Mining Journal..
We received entries from readers in fourteen states for our contest to find out who has the oldest surviving copy of the Journal, originally named the California Mining Journal..
The Business of Mining: Cars, Trucks and Tax Deductions
December 2006
Most importantly, self-employed miners, prospectors or employees (even of their own mining-related business) who own or lease an automobile, can utilize the standard rate so long as they operate only one car at a time for business purposes.
Most importantly, self-employed miners, prospectors or employees (even of their own mining-related business) who own or lease an automobile, can utilize the standard rate so long as they operate only one car at a time for business purposes.
Company Notes
December 2003
• Coeur d'Alene Mines Corp.
• Northern Dynasty Minerals Ltd.
• Kimberly Gold Mines, Inc.
• SpectrumGold Inc.
• Coeur d'Alene Mines Corp.
• Northern Dynasty Minerals Ltd.
• Kimberly Gold Mines, Inc.
• SpectrumGold Inc.
The Bawl Mill
July 2004
• Government discovers new method to subsidize airlines
• California uses environmentalists' favorite tool against them
• Delayed gratification
• Hold my seat; I'll be right back...
• Government discovers new method to subsidize airlines
• California uses environmentalists' favorite tool against them
• Delayed gratification
• Hold my seat; I'll be right back...
Searchers' Dreams
May 2013
The story began in a southern Arizona mountain range...
The story began in a southern Arizona mountain range...
The Tangential Impulse Water Wheel in California Gold Mining History—Part II
March 2004
Even before Pelton relocated in San Francisco in 1888, many other competitive foundries and machine shops chose to enter the water wheel market. These firms were already busy with the mining trade, producing hoists, stamp mills, ore carts, Cornish pumps, crushers, grinders, compressors and drills.
Even before Pelton relocated in San Francisco in 1888, many other competitive foundries and machine shops chose to enter the water wheel market. These firms were already busy with the mining trade, producing hoists, stamp mills, ore carts, Cornish pumps, crushers, grinders, compressors and drills.
Gold Recovery with Centrifugal Bowls
July 2014
Centrifugal bowls are very efficient, and with proper operation they can consistently achieve gold recoveries above 95% with gold of about 50 mesh size.
Centrifugal bowls are very efficient, and with proper operation they can consistently achieve gold recoveries above 95% with gold of about 50 mesh size.
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The Bawl Mill
• Ask the Experts
• More Tips for Evaluating Ores
• The Basics of Small-Scale Heap Leaching with Cyanide Part I—History, Suitablility and Permitting
• Oregon Suction Dredge Permit Update
• In Pursuit of Gold and Silver in the Sierra Madres—Buying the Pilot Mill
• Life in the Alaska Gold Rush
• More Small-Scale Miners Attracted by Gold Prices
• Gold in New Zealand
• Ready “Ore” Not, Uranium Boom is On Again
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
• Looking Back
