All Articles
Here Come the MineBots
June 2004 by Rolando R. Gutierrez
In March 2004, Vulcan, a mine exploring robot from the Discovery Miner Program, was shipped to the Vulture City region to investigate the conditions of an abandoned hard rock mine. The shaft was typical of the dangerous mines that are...
Enrichment of Mineral Deposits by Weathering—Part I
The exact minerals formed in the concentrated supergene deposits depends much on the type of country rock around the deposit and the chemistry of the deposit itself, but if conditions are right, this process will form some rich patches of bonanza ore, in some places valued at thousands of dollars to the ton.Interview With A Coho Salmon
We’ve obtained the rights to publish this exclusive interview conducted on the Klamath River between David, an environmental activist, and a Coho salmon.
The Treasure Detective—Part III
In the 1800s, rich silver and gold mines along the eastern Sierras were supplied from Los Angeles by a wagon road with an important stage stop at Freeman Junction. Wagons carrying the gold and silver back from the mines to Los Angeles followed the same wagon road. A cottage industry of robbery arose where numerous individuals made a living holding up these wagons and making off into the hills with the loot.
Melman on Gold & Silver
Most American markets greeted the first few trading days of the new year with substantial selling. Compared to their 2004 year-end levels, by January 11, the Dow Jones Industrial Average had declined almost 300 points, the NASDAQ Composite had fallen from 2,185 to near 2,080 while the S&P 500 had dropped from 1,217 to 1,183.
Gold in Rotten Rock
Rotten rock (saprolite) can be found in all warm, humid regions, but is best developed in humid, subtropical climates, like that found in the American South. Outwardly, it looks like bedrock, but upon closer inspection, it can be seen that roots penetrate it and that it can be worked with a shovel or hydraulic monitor.
Colorado Mining Association Appeals Roadless Ruling
The Colorado Mining Association is asking the US Supreme Court to review a 2001 rule that largely barred new roads on 58 million acres of roadless areas in national forests.
Legislative and Regulatory Update
• Assembly Bill 1032
• Cache County v. USFS
• CMA appeals cyanide ban
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The Bawl Mill
• Higher Copper Price Brings Hope, Jobs
• Zeballos Gold Camp, British Columbia
• Agreement Allows Pogo Mine to Resume Construction
• Treasure Hawk Mine Back in Action
• Oregon Dredgers Receive Threats From Environmentalists
• Understanding Hard Rock Mining: Terms and Methods—Part I
• Mood at Calgary Conference is Subdued, But Optomistic
• Reinventing the Wheel—The Infinity-Jet
• Company Notes
• Endangered Species Act is a Mess
• Placer Platinum
• Agency Gives Initial Backing to Kensington Mine
• Mining Stock Quotes and Mineral & Metal Prices
• Looking Back
• Melman on Gold & Silver
• Brits Thwart Robbery of Gold and Cash
