All Articles
Commercial Placer Mining With Jigs
August 2010 by Chris Ralph
During the upward stroke, water is pushed up through the shot layer causing it to open up and lifting the gravel particles above. The heavier particles settle faster based on Stokes law, and move down into the shot bed layer, while the lighter...
Ask the Experts
How do I set up a small placer operation?
Looking Back
Excerpts from California Mining Journal, our original title, published 50 years ago this month.
Ask the Experts
• What's worth picking out of the pan besides gold?
Looking Back
Excerpts from California Mining Journal, our original title, published 50 years ago this month.
Synclinal Oil
Most oilfields are found in anticlinal faults, or stratigraphic traps. Oil floats on water, so that it will rise to the highest point possible, above the water. If the porous or fractured sandstone or limestone that contains the oil is overlain by impervious shale, the oil can no longer rise. If the porous bed is arched upward...
Critical Minerals: Titanium—Part II
There are both hard rock and beach sand types of titanium deposits, but the hard rock deposits need to be at least 10 percent titanium while the beach sands often are economic with only two or three percent titanium.
The Bawl Mill
• New Zealanders know how to spend taxpayer money, too
• The anti-terrorism television
• Diverting federal funds...
• Finally! Your tax dollars truly at work for you
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