Commercial Placer Mining With Jigs
August 2010 by Chris RalphDuring 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...
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.
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...
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.
Over 7 million ounces of gold have been produced in the Klamath Mountains of northwestern California, 64% of which has been from placers.
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 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...
The Bawl Mill • Legislative and Regulatory Update • Ask The Experts: Bench Top Crushers • Ask The Experts: How to remove precious metals from lead? • How to Properly Ground Balance to Find the Most Gold • Authorities Search for Lost Treasure Hunters • Alaska Geologist Survives Grizzly Attack • The Guaniamo Diamond Area, Venezuela—Part II • How California Became the Golden State • The Rocky Bar Mining District, Idaho • Mining Stock Quotes, Mineral & Metal Prices