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Hardrock in Downieville
November 2000 by Mark Mallicoat
A recent weekend trip found us leaving the Grass Valley, California area to meet up with some friends in Downieville.Beach Mining for Placer Gold
What I saw was a beach area that was just completely covered in black sand. Rubbing my hands close together like a kid in a candy store, I could not wait to get set up.
Testing Ores for Free Gold
I get a number of questions from people about testing and treating hard rock ores. The simplest way, but also an expensive one, is to just have an assay test done by an independent assay firm. As an alternative...
Natural Gold Alloys
Natural gold is never 100% pure; all natural nuggets contain at least some impurities. We're going to take a look at just what some of those impurities might be.
Feds Order Closure of Idaho Mine
Federal safety inspectors have ordered one of the nation’s deepest underground mines closed in northern Idaho following an investigation prompted by a series of accidents that killed two miners over the last year.
MMAC Update
This will provide the opportunity to meet with many of the members of Congress in a more informal setting at several meetings, luncheons and dinners. And we have been offered the chance to meet with President Trump’s staff.
PLP President Intervenes on Behalf of Dredgers
Jerry Hobbs, president of Public Lands for the People, is taking action to prevent undue restrictions on miners utilizing suction dredges in California.
Synclinal Oil
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...
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The Bawl Mill
• Our Readers Say
• Enrichment of Gold Veins
• The Assay of High Iron Gold Ores
• The Patch
• History of Mining—Bradshaw Mountains, AZ (Part I)
• Picks & Pans—The Green Rock, Rattlesnakes, Good Gold and Ruth's Mine
• The Oretron
• Silver Hill, North Carolina
• Residual, Lateritic and Gossan "Soils" as Potential Nuggetshooting Sites
• Looking Back
• Company Notes
• Gold in Northern Baja California
• California State Gold Panning Championship Results
• Melman on Gold & Silver
• V.P. Contender Addresses Mining Show
