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Prospecting for Silver With a Geiger Counter
January 2001 by Edgar B. Heylmun, PhD
Light-colored volcanic tuff or tuffaceous sandstone often contains small amounts of uranium, enough to be detected with a sensitive radiation detector. Sometimes, the mass effect of the radiation is substantial.Just Another Ordinary Weekend
There was no evidence that anyone else had ever worked this gully with the exception of some old sample piles near the foot of the ravine.The Ancient History of Gold
Man was aware of the presence of gold over 7,000 years ago, and it probably did not take him long to find out that gold was malleable and resistant to corrosion. He no doubt learned, at an early date, that objects could be fashioned from gold.
Oregon Suction Gold Dredgers Score Big Win
The main issues in this case involved the DEQ’s authority to regulate discharges under sections 402 and 404 of the Clean Water Act.
Mining Stock Quotes and Mineral & Metal Prices
Picks & Pans: Tips for Nuggestshooting—How to Increase Your Gold Finds (Part I)
From a prospector's standpoint, the metal detector may be one of the most significant breakthroughs of the twentieth century. It is believed that the first metal detector was discovered accidentally in 1925 when a radio engineer...
Treasure Hunters Challenge FBI Over Dig for Civil War Gold
The father-son duo spent years combing this bit of Pennsylvania wilderness with high-end metal detectors, drills and other tools to prospect for a fabled cache of Civil War gold.
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