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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...
Melman on Gold & Silver
I must admit to taking some degree of pleasure in anticipating the excuse-making which will probably come out of the "Global Warming" camp to explain away a truly startling announcement.
Hardrock Detecting
A local mining company had been mining in the Circle mining district area creeks in interior Alaska for sixteen years. Using bulldozers, drag-lines, water pumps, and large sluicing plants, the owner-operator was very familiar with the geology...
Placer PGMs in Coon Creek, California
Lower Coon Mountain is located in the Klamath Mountains, some 10 to 15 miles east of Crescent City (pop. 4,400), which rises to an elevation of 2,841 feet. It is heavily forested except for a few areas that are underlain by serpentine. The mountain, which trends northeast, is bounded on the north by Craigs Creek, and on the south by Coon Creek.
The Klamath Mountains
Over 7 million ounces of gold have been produced in the Klamath Mountains of northwestern California, 64% of which has been from placers.
Gold in Guyana—Part I: Porknocking on the Puruni River Road
In part one of this two-part series on gold in Guyana, I describe artisanal mining efforts currently winning alluvial gold from small-scale placer operations located along the lower Puruni River and its tributaries.
The Lost Silver Triangle of the Sierra Madre—Part I
The North American continent harbors a vast mountain fastness that few Anglo-Americans have seen—an awesome land cut by perpendicular canyons and towering peaks, a forbidding wilderness virtually unchanged...
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