The Basics of Small-Scale Heap Leaching with Cyanide Part I—History, Suitablility and Permitting
July 2007 by Chris RalphHardrock mining is usually done on a large scale, and although a few small-scale hardrock operations still exist, it’s not an easy operation to start up and run profitably.
The accurate sampling of mineral deposits for testing and analysis is perhaps the most important step involved in both mineral exploration and development. It is a critical factor in initial prospecting efforts and the preliminary investigation of grassroots exploration projects, yet sampling is often performed in a haphazard and incomplete fashion during the early stages of prospecting and exploration activities.
Jeff Reed may be Alaska’s top nugget hunter, or maybe he’s one of many. He doesn’t get skunked too often. In the past two years, he’s estimated he’s found about 3,000 gold nuggets primarily at the...
• "...response to your inforamtion..."
• "Rattlesnakes" article (August 2002) was "unclear"
• Roadless Rule revisited
• Kensington finally gets stamp of approval
• Interior places restrictions on mining claims near Grand Canyon
Recovering large, coarse gold nuggets is a very exciting experience, and the quest for large gold is often the “holy grail” of the independent prospector, no matter which type of equipment is used. Hefty, good-sized gold nuggets are...
Two companies are looking to mine the largest known iron ore deposit in the West—a 50-year supply at a rate of 1 million metric tons a year.
The Bawl Mill • Ask the Experts • More Tips for Evaluating Ores • The Mountain Gate Mine • Oregon Suction Dredge Permit Update • In Pursuit of Gold and Silver in the Sierra Madres—Buying the Pilot Mill • Life in the Alaska Gold Rush • More Small-Scale Miners Attracted by Gold Prices • Gold in New Zealand • Ready “Ore” Not, Uranium Boom is On Again • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices • Looking Back