All Articles
The Lost Silver Triangle of the Sierra Madre—Conclusion: Tayopa, Guaynopa, and Guaynopita
July 2008 by Steve Wilson
Lieutenant Henry O. Flipper might well have been correct about the “Santa Fe de Rodríquez” being the name of what is now called Guaynopa. However, an Indian named Agustín de la Cruz, who was associated with Cristóbal Rodríquez, is credited with discovering the mine in 1741. It is probable that the Spanish settlement had indeed been found because of its rather extensive ruins.Additional articles that might interest you...
California State and US National Panning Championships
November 2014
Over 200 panners competed in this two-day event to decide who was the best of the best.
Over 200 panners competed in this two-day event to decide who was the best of the best.
Rare Earth Deposit May Be Awaiting Discovery
July 2010
Bill and the geologist lost interest and as far as I know, nothing more was done to locate the deposit.
Bill and the geologist lost interest and as far as I know, nothing more was done to locate the deposit.
Mine Reopening Could Revive Region
September 2000
Cominco American Inc., the U.S. subsidiary of Vancouver, British Columbia-based Cominco Ltd., is seeking regulatory approval to reopen the mine in early 2002.
Cominco American Inc., the U.S. subsidiary of Vancouver, British Columbia-based Cominco Ltd., is seeking regulatory approval to reopen the mine in early 2002.
Ask The Experts—Separating platinum from sands using bubbles
October 2011
I am trying to find any information about using bubbles to separate platinum from sands and small particles. I think it has to have a surfactant in the process. Do you know of this bubble tech?
I am trying to find any information about using bubbles to separate platinum from sands and small particles. I think it has to have a surfactant in the process. Do you know of this bubble tech?
Economic Analysis on Critical Habitat for Bull Trout
May 2004
The US Fish & Wildlife Service has released the economic analysis and reopened the comment period for their proposal to designate critical habitat for the bull trout in 18,469 river miles and 532,721 acres of lake and reservoir habitat across the Western states.
The US Fish & Wildlife Service has released the economic analysis and reopened the comment period for their proposal to designate critical habitat for the bull trout in 18,469 river miles and 532,721 acres of lake and reservoir habitat across the Western states.
Oregon Dredgers Receive Threats From Environmentalists
June 2004
Oregon dredgers have been receiving notices of intent to sue for violations of the Clean Water Act (CWA) from the Northwest Environmental Defense Center (NEDC).
Oregon dredgers have been receiving notices of intent to sue for violations of the Clean Water Act (CWA) from the Northwest Environmental Defense Center (NEDC).
From the Editor
May 2003
An article entitled “BLM Swindles War Hero Out of Gold Mine,” authored by Robert Boatman, appeared in our September 2002 issue. The Bureau of Land Management (BLM) was unable to provide comment on the article at the time.
An article entitled “BLM Swindles War Hero Out of Gold Mine,” authored by Robert Boatman, appeared in our September 2002 issue. The Bureau of Land Management (BLM) was unable to provide comment on the article at the time.
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The Bawl Mill
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• Tools of the Modern Prospector: The GPS
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