The Basics of Crushing and Milling Operations
February 2011 by Chris RalphIn processing gold, silver and other valuable ores, the minerals containing the values, such as metallic gold, silver-bearing sulfides or other minerals, must be freed from the surrounding host rock before those valuable minerals can be captured
Father’s Day in Australia was on September 2, and it’s a day a group of miners from “down under” won’t soon forget.
The Gold Eye placer claims, located in the La Cholla district of Arizona, are still producing some beautiful gold. From the days of the Spanish explorers and Mexican miners, men have tunneled into the earth in search of gold in this area.
His findings were not exaggerated—after running 82 buckets of gravels in two days we had a remarkable 27.8 grams of gold!
The 15 rare earth elements were discovered long after the gold rush began to wane, but demand for them only took off over the past 10 years...
Augers can be used effectively for placer exploration with certain limitations.
The non-toxic thiosulfate is actually the medical antidote given to people for cyanide poisoning. By accomplishing both neutralization and metals recovery, this process creates an economic and environmentally attractive process.
With successively lower temperatures as the water mixture cools, new sets of minerals are formed and many of those stable at a higher degree of heat became subject to alteration as the temperature progressively moved lower.
The Bawl Mill • Our Readers Say • Ask The Experts—What minerals are magnetic? Can rare earth magnets capture platinum? • Ask The Experts—Jet nozzle or suction nozzle? Which is best for my highbanker? • Ask The Experts—Precious metals in water? • Rediscovering Placerville, California • Eastern Arizona: Gold and Base Metal Deposits—Part I • Over The Divide—Daryl J. Nelson • Legislative and Regulatory Update • Cyanide-Free Gold Separation • Mining Stock Quotes & Mineral and Metal Prices • Melman on Gold & Silver