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Small Mine Selective Blasting
January 2000 by Dr. Ralph E. Pray
Drill holes in a mineralized vein often penetrate hidden layers of poor ore which, after blasting, end up diluting the production quality. Disseminated gold ores carrying two ounces per ton may be identical in appearance to adjacent vein material...
Legislative and Regulatory Update
• Miners win latest round
• New push to close off lands in New Mexico
• Close call in Peru
• New underground safety requirements
Spanish Gold Ledge Still Producing Gold
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.
The Mexican Gold Belt
Mexico is a large country, much larger than the state of Alaska. It is almost as long as the US is wide. It has climates that range from tropical rainforests in the south to barren deserts in the north. The Sierra Madre is a forested plateau that reaches elevations in excess of 10,000 feet. It parallels the west coast of the country.
Ask The Experts—Extraction of micro gold from black sands
I know big mining companies use cyanide and other leach systems to recover gold from ore. Is this the only economically feasible way to recover the values?
A Few Prospecting Notes From Jim Straight
The article that appeared in the October 2002 Issue of ICMJ, “Confessions of a Professional Nuggetshooter,” by Lunk, is an example of how to use a “deep-seeking-type” metal detector to lay down a grid pattern to “mine” eluvial placer gold after prospecting and finding the first nugget as the locus.
California Sniping
I opted for the underwater portion of the river. All I have to do is float down the river and pick large flakes and small nuggets out of cracks and crevices while staying cool in the summer heat.
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The Bawl Mill
• Over the Divide
• Our Readers Say
• Letter from the Editor to our Readers and Advertisers
• Administration Considers Bypassing Congress
• First Woman to Draw Mining Pension
• Mohave Mountain Placers, Arizona
• High Court to Reconsider Wilderness Water Rights
• Sixteen to One Takes on MSHA
• Picks & Pans: Gold Mining on Joie Osgood Ranch
• Gold
• Company Notes
• Millie's Tailings
• Placer PGMs in Alaska
• Mogollon—New Mexico's Remote Gold Camp
• ICMJ 9th Annual Photo Contest Results
• The Other Minerals of Mt. Diablo
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
• Looking Back
