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Tantalum
July 1999 by Edgar B. Heylmun, PhD
Tantalum is a refractory metal which is non-toxic, ductile; easily fabricated, has a high melting point, is highly resistant to corrosion and is a good conductor of heat and electricity. It has the unique ability to transmit an alternating current in only one direction.Growing Pains of the Learning Curve
Interestingly enough, when I first started to think about writing this article I was listening in on a conversation my wife was having with our nine-year-old twin boys. Just to add some clarification to the subject, I spend a large proportion of my time out in the...
Countries Want More Concessions From Miners
Bulgaria has followed the recent moves of Mongolia and Venezuela, demanding renegotiation of existing agreements and more concessions from mining companies.
Miner Says Mining Could Return to Boulder
New core samples taken near Caribou, not far from the Continental Divide at the edge of Boulder County, show the potential for major production in coming years, an owner of the mine says.
PLP Files Lawsuit to Lift Ban on Suction Dredging
“The goal is to get the rights of suction gold dredgers restored prior to the next dredging season,” stated PLP president Jerry Hobbs.
BLM Runs Check on Assay Services
The Bureau of Land Management (BLM) recently conducted a multi-year study of sixty-five assay laboratories to determine the accuracy of their testing procedures. The laboratories, all located in North America, were provided with ore samples of known concentrations without benefit of identifying the source as BLM. Payment was rendered for the service provided.
Looking Back
Excerpts from CMJ published 50 years ago this month.
A Guide to Overlooked Gold Deposits—Part II
The following are situations that the modern prospector would do well to research. Some specific areas are described, but more importantly they present background into what the author feels are worthwhile and generally overlooked situations...
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The Bawl Mill
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• Religious Broadcaster in Liberia Mining Venture
• Kazak Government Collects Gold from Residents
• Recreational Gold Panning on the South Yuba River
• Groups Wonder Meaning of Call for More Wilderness
• Mining Claim Maintenance Fee Due
• Desert Bonanza
• Gold Near Boulder, Colorado
• Company Notes
• The Carissa Gold Mine, South Pass, Wyoming—A Sleeper?
• Building the American Dream
• Picks & Pans: A Pay Streak in Slate
• Elizabethtown: Uncovering a Buried California Mining Community
• California Diamonds
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
• Silver Demand Driving Mine Production Up—Mexico Remains Number One Producer
• Looking Back
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