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Cobalt and Nickel in Missouri
October 2002 by Edgar B. Heylmun, PhD
Cobalt and nickel are tough silver-white metals, with similar physical properties, that frequently occur together in nature, along with copper sulfides. Cobalt and nickel are used as alloys, providing great strength and resistance...
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?
A Warning About Mercury
I was working on an article to submit to you and had been for a couple of months. It won’t be the first. I had something occur that made me put off the article—safety! My article was concerning mineral processing at home.
Confluence Placers
Confluences of placer streams are well known as concentration sites for heavy minerals. The basic reason is that...
The Bawl Mill
• Down on the farm...
• Who you gonna call...
• Deceased still collect wages...
2007 Annual Photo Contest Winners
California: The Land of Big Nuggets—Part II
There are a number of Tertiary river channels in the area, most of which trend south-southwest. They tend to be steep, narrow, and rich with coarse gold.
The Bawl Mill
• What comes around goes around...
• Bombs away for Texas nuclear materials inspection
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• Placer Gold in Idaho
• Working the Belmont Mine Butte, Montana—1953
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