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Montana Tunnels Gets Final OK

The federal and state agencies authorized enlargement of the pit, expansion of waste-disposal areas and other measures that Montana Tunnels operators project will...

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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.

U.S. Dept. of Interior Inspectors in Arizona


Glynn Burkhardt, president of the Arizona Small Mine Operators Association, has a small mine outside of Tucson, Arizona. He recently received a visit from U.S. Department of Interior...

Sampling for Success—Part I


All these decisions and more depend on the richness of a claim—something that is determined by sampling. But sampling isn’t cheap, and even collecting the samples can be more difficult than it appears on the surface.

The Bawl Mill


• A breath of fresh air?
• Ay Carumba!
• Principal pours it on a little too thick...

Ask The Experts—Where to Take Sulfide Ore for Processing


Q: I have a high grade silver-copper vein. In my area of NE Washington, hundreds of these veins were mined and shipped ore years ago. The vein is not a problem to mine, the problem is whom do I sell the sulfide ore to these days?...

Company Notes


• Goldcorp Inc.
• Kinross Gold Corp.
• Newmont Mining Corp.

Mining Stock Quotes and Mineral & Metal Prices


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The Bawl Mill   • Mining Journal Contest   • Bullion River's French Gulch Gold Mine   • Reading A River: Finding The Paystreaks—Part I   • Gold Miners Hunker Down Amid Financial Storm   • Lluvia de Oro—A Shower of Gold Awaiting Development in the Sierra Madre—Part II   • From Hand Sluice to Dredge   • Melman on Gold & Silver (2008 Year in Review)   • Chavez Eyes Venezuela’s Largest Gold Mine   • Mining Stock Quotes and Mineral & Metal Prices

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