The Ball Mill
May 2003 by Staff• This wasn't the UN makeover we were expecting
• Do you have more money than you really need?
• British tabloids "French roast" Chirac
• Reporter comes out of the closet
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...
The “Golden Triangle” dry placer district in Sonora, Mexico, lies some 80 to 100 miles south of the border. It is in desert terrain at elevations between 1,900 and 2,300 feet above sea level.
The black sand was loaded with mercury from the river, but there wasn’t enough to pick up all the fines. We took out the amalgam and had to suction up the remaining fine gold.
...I got the faintest of rises in the threshold. It was hardly a signal at all, and I thought it was one of the many, deep, hot rocks in the area.
Any ore grading 32% silver would contain more than 9,000 ounces of silver per ton and be valued at something in the range of $150,000 per ton. Even a few tons of this type of material would be well worth shipping off to a smelter for treatment.
Our Readers Say • WMD Raffle Raises Funds for Lawsuit • Gold in Alabama • From the Editor • Yukon Placer Miners Fighting Extreme Discharge Limits • Picks & Pans: Red Beryl Mining—Beaver County, Utah • The Investigation • A Gold Detector Sitting in a Closet Only Finds Dust—A Potpourri of Detector Tips • Central Coast Ranges • Poll: Montana in Favor of Repealing Anti-Mining Initiative • Platinum in Laccoliths • Mining Stock Quotes and Mineral & Metal Prices • Looking Back • Melman on Gold & Silver