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Cerro Colorado Silver, Arizona
November 1999 by Edgar B. Heylmun, PhD
It was the first mine developed by Americans in the Cadsden Purchase of 1853. A number of small near-surface mines had been operated by Spaniards and Mexicans in the region prior to the arrival of Americans, going back as far as 1740.Mining Stock Quotes and Mineral & Metal Prices
Gold Placers in Italy
Gold is a fairly widespread mineral in the Italian Alps and in the Northern Apennines. It is found both in primary mineralization and in past and recent floods.
Letter to the Editor
The Colorado River Indian Tribes wish to be given 16,000 acres in La Paz County, Arizona, that was at one time theirs...
43 CFR 3809 Update
On October 30, 2001, a final rule and a proposed rule were published in the Federal Register by the Bureau of Land Management (BLM) and Department of Interior (DOI) for 43 CFR 3809. It appears that many of the letters...
Alluvial Fans
Alluvial fans are essentially dry land “deltas” which can be found in all climates. However, they are best developed in arid and semi-arid regions, where they may be many square miles in area. They are built up by outpourings of silt, sand, and gravel caused by seasonal run-off, as well as by boulders and cobbles carried by flash floods.
Mining Reform and Congress
After years of negotiations between environmentalists and industry groups, observers say efforts to reform the 1872 Mining Law may finally pick up steam in Congress.
Imagining the Ultimate Prospecting Adventure
I recently found myself wondering what would be the ultimate prospecting adventure. What would be the most amazing thing if I had no restrictions or limitations?
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The Bawl Mill
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• Another Gold Heist Reported at Nome
• No Need to Rewrite Mining Regs, NAS Study Confirms
• BLM Filing Requirements for Small Miners' Waiver
• Asarco Accepts Phelps Dodge Buyout
• Once Lonely, Mojave Desert Phone Now World's Companion
• Judge Blocks Road Protest
• Company to Sue Over Stymied Gold Mine
• No Mining / Logging on 40 Million Acres
• Catastrophism vs. Uniformitarianism
• 1st Annual Placer County Open Gold Panning Championships—1999
• Picks & Pans: The Ten-Pennyweight Nugget
• Mining in Sonora, Mexico
• Pullin' the Pin
• Land of Golden Dreams—California in the Gold Rush Decade
• Progressive Privy Program Proved Popular
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
• Surging Gold Prices Burn a Few Unlucky Mining Firms
• Looking Back
