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Ask The Experts: How to remove precious metals from lead?
August 2010 by Thom Seal, PhD, PE
I have a large amount of precious metals, gold and silver, mixed in with lead. Cupelling is expensive. What method can I use to extract the gold and silver without cupelling?Additional articles that might interest you...
Battle Heats Up Over California Suction Dredging
March 2010
The State of California is seeking dismissal of the federal lawsuit filed by Public Lands for the People (PLP) on grounds that they are immune from such lawsuits under the 11th Amendment to the US Constitution. However, there is plenty of prior case precedence suggesting that state officials and agencies are open to such lawsuits when they assume responsibility for regulatory authority from the federal government.
The State of California is seeking dismissal of the federal lawsuit filed by Public Lands for the People (PLP) on grounds that they are immune from such lawsuits under the 11th Amendment to the US Constitution. However, there is plenty of prior case precedence suggesting that state officials and agencies are open to such lawsuits when they assume responsibility for regulatory authority from the federal government.
Picks & Pans: Mining Tungsten Ore—A Case History
May 2002
In 1977, when the price of tungsten hit one of its highs, three of us formed U.S. Western Mines to look for scheelite, the mineral ore of tungsten. Union Carbide Corporation was purchasing raw tungsten ore at...
In 1977, when the price of tungsten hit one of its highs, three of us formed U.S. Western Mines to look for scheelite, the mineral ore of tungsten. Union Carbide Corporation was purchasing raw tungsten ore at...
The Pearce Mineralized Area, Dragoon Mountains, Arizona—Part II
August 2013
There are many prospects within the known mineralized area and along the margins of the mineralized area that should be examined for gold and silver.
There are many prospects within the known mineralized area and along the margins of the mineralized area that should be examined for gold and silver.
Update On “Special Rock” Kicking
February 2007
Bob “Neverquit” Abendschein’s article on his “Special Rock” in the December 2006 issue was short and to the point. As Neverquit and I are old friends, I sent him e mail:
Bob “Neverquit” Abendschein’s article on his “Special Rock” in the December 2006 issue was short and to the point. As Neverquit and I are old friends, I sent him e mail:
Company Notes
October 2004
• Washington Group Int'l
• Robinson Nevada Mining Co.
• Little Squaw Gold Mining Co.
• Newmont Mining Corp.
• Compania de Minas Buenaventura
• Washington Group Int'l
• Robinson Nevada Mining Co.
• Little Squaw Gold Mining Co.
• Newmont Mining Corp.
• Compania de Minas Buenaventura
The Bawl Mill
June 2019
- Residents put on hold for frogs
- I’d like to buy a vowel please…
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• Ask The Experts: Bench Top Crushers
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• Authorities Search for Lost Treasure Hunters
• Alaska Geologist Survives Grizzly Attack
• The Guaniamo Diamond Area, Venezuela—Part II
• How California Became the Golden State
• The Rocky Bar Mining District, Idaho
• Mining Stock Quotes, Mineral & Metal Prices
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The Jenkins Mine Project—The Golden Rules of Science
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• ICMJ Again Matches Funds For PLP Donations
