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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...
Legislative and Regulatory Update
January 2002
• San Bernardino National Forest Closure
• Interior secretary wants reforms to 1872 Mining Law
• Nevada drops lawsuit over mining regulations
• Environmental extremists sue over mine operation
• San Bernardino National Forest Closure
• Interior secretary wants reforms to 1872 Mining Law
• Nevada drops lawsuit over mining regulations
• Environmental extremists sue over mine operation
Using Geologic Maps
December 2015
In order to see what geologic maps can do, we need to think about what we are looking for.
In order to see what geologic maps can do, we need to think about what we are looking for.
The Ely Copper-Gold District of Nevada
January 2015
The main ore deposits of the Ely district are associated with an east-west belt of altered and mineralized rocks measuring about one mile wide that extends 8 miles westward from Ely.
The main ore deposits of the Ely district are associated with an east-west belt of altered and mineralized rocks measuring about one mile wide that extends 8 miles westward from Ely.
Working the Belmont Mine, Butte, Montana—1953 (Part 2)
November 2002
During the two weeks that Jack had been hanging around the dump, no more than a dozen words had passed between us. As far as I knew, he didn’t know any more about me than I did about him. Consequently, I couldn’t believe my ears when I heard Jack ask, “Would you like to come and work with me?”
During the two weeks that Jack had been hanging around the dump, no more than a dozen words had passed between us. As far as I knew, he didn’t know any more about me than I did about him. Consequently, I couldn’t believe my ears when I heard Jack ask, “Would you like to come and work with me?”
Judge Tosses Lawsuit Against Tucson-Area Mine
March 2012
A federal judge has tossed a lawsuit filed by opponents of a Tucson-area mine that had accused the US Forest Service of violating two federal laws in its handling of the mine issue.
A federal judge has tossed a lawsuit filed by opponents of a Tucson-area mine that had accused the US Forest Service of violating two federal laws in its handling of the mine issue.
The Lost Silver Triangle of the Sierra Madre—Part I
April 2008
The North American continent harbors a vast mountain fastness that few Anglo-Americans have seen—an awesome land cut by perpendicular canyons and towering peaks, a forbidding wilderness virtually unchanged...
The North American continent harbors a vast mountain fastness that few Anglo-Americans have seen—an awesome land cut by perpendicular canyons and towering peaks, a forbidding wilderness virtually unchanged...
Spectacular Specimens Found in Northern Nevada
December 2003
A prospector, who wishes to remain nameless, located the pictured chevron gold specimens on October 29, 2003.
A prospector, who wishes to remain nameless, located the pictured chevron gold specimens on October 29, 2003.
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The Bawl Mill
• Legislative and Regulatory Update
• Commercial Placer Mining With Jigs
• Ask The Experts: Bench Top Crushers
• How to Properly Ground Balance to Find the Most Gold
• 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
• Melman on Gold & Silver
• ICMJ Again Matches Funds For PLP Donations
