Company Notes

April 1999 by Staff

Glacial Gold in Ohio

January 2002
Ohio is an industrialized, midwestern state with a population of 11.5 million and an area of 40,953 square miles. Annual precipitation is about 40 inches, enough to give rise to hardwood forests...

Picks & Pans: Winter Prospecting and "Forty Mile" Miller

January 2004
It was in the mid-70s. I had just finished setting my traps out along the river when it dawned on me where “Forty Mile” Miller’s old hardrock outcrop was. Here I was, standing on snowshoes, floundering in three feet of snow, bracing myself so I wouldn’t...

Small Miner Beats Forest Service in Court

January 2013
Thomas Tierney has been a long-time subscriber to ICMJ’s Prospecting and Mining Journal and has read about the many battles between miners and overzealous regulators. Then he faced his own battle.

Ask the Experts: Big rocks or small cobbles?

January 2014

River Dredging vs. Creek Dredging—Part I

December 2011
As I started walking down to the river one chilly morning, the mist was hanging over the calm portions of the water like a white cotton blanket. This scene got me to thinking about why the river was like that—the deep pools, boulder fields, gravel bars, the effects of how much water was moving at any given time along the watercourse—and most of all the relationship all these things have on where I will be able to find gold.

Commercial Placer Mining With Jigs

August 2010
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...

California State and US National Panning Championships

October 2012
On Labor Day weekend, September 1st and 2nd, two days of furious, almost non-stop panning went on.

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