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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...
How to Get Started as a Gold Prospector
February 2008
The surging price of gold is attracting a whole new generation of prospectors who are looking to find a bit of natural gold out in the hills. It’s certainly a lot different than it was six or eight years ago when gold was stuck below $300 per ounce.
The surging price of gold is attracting a whole new generation of prospectors who are looking to find a bit of natural gold out in the hills. It’s certainly a lot different than it was six or eight years ago when gold was stuck below $300 per ounce.
Guest Editorial—President's Land Plan Implements Unratified Treaty
April 2000
"The President's plan to lock-up an additional 40-million acres of wilderness in 35 states, is a blatant step toward the total implementation of the aims of the unratified Convention on Biological Diversity."
"The President's plan to lock-up an additional 40-million acres of wilderness in 35 states, is a blatant step toward the total implementation of the aims of the unratified Convention on Biological Diversity."
The Bawl Mill
December 2005
• An idea that is overdue...
• Oh Lord, won’t you buy me a Mercedes Benz?
• An idea that is overdue...
• Oh Lord, won’t you buy me a Mercedes Benz?
The Bawl Mill
June 2001
• Energy conservation? Or investing in power?
• Collecting Dividends from the "Brown" fund
• Come rain, sleet, or snow...
• Energy conservation? Or investing in power?
• Collecting Dividends from the "Brown" fund
• Come rain, sleet, or snow...
Looking Back
January 2005
Excerpts from California Mining Journal, our original title, published 50 years ago this month.
Excerpts from California Mining Journal, our original title, published 50 years ago this month.
Arizona's Border Silver Camps
July 2001
Not much has changed along the original stage road that runs easterly from an old schoolhouse northeast of Nogales into the Patagonia Mountains of southern Arizona. Marked on the maps as Duquesne Road, the route has been in use for over 130 years, climbing from the hot desert floor to an almost 6,000-foot elevation pass before dropping back down the eastern slope of the mountains to reach the old mining camps of Washington, Duquesne, and Lochiel.
Not much has changed along the original stage road that runs easterly from an old schoolhouse northeast of Nogales into the Patagonia Mountains of southern Arizona. Marked on the maps as Duquesne Road, the route has been in use for over 130 years, climbing from the hot desert floor to an almost 6,000-foot elevation pass before dropping back down the eastern slope of the mountains to reach the old mining camps of Washington, Duquesne, and Lochiel.
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