All Articles
Open Letter to the BLM
May 1999 by Guest Writer
from H. Mason Coggin, PE & LSThe Significance of Boulders in Placer Deposits
The good news about boulders is they can trap heavy minerals. The bad news is moving them out of the way can be a real struggle.
Looking Back
Excerpts from California Mining Journal, our original title, published 50 years ago this month.
The Bawl Mill
Prospecting for Commercial-Scale Gold Deposits
While most individual prospectors out there are searching for placer gold, there is a different type of prospecting being done by a handful of individuals—the search for commercially viable large-scale gold and silver deposits.
A Test Grid Dredged for Gold Values
The evaluation must also consider the gold fineness or purity. The purity of the Sugardaddy nuggets is estimated at 850 fineness, meaning 85% is gold (Au), 12% is silver (Ag) with 3% being other gangue alloyed metal.
The Patio
“Hey, R.B., let’s go down and see how the patio is going.” Bart, my neighbor, called to me across the fence as he strolled by, heading towards the mine superintendent’s house.
Clarification on Oregon's SB838
The 100-yard restriction in SB838 actually applies to all motorized mining for the purpose of extracting gold, silver or any other precious metal that results in the disturbance of vegetation.
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The Bawl Mill
• Mining Law—A Short History
• Industry Urges Restraint on Mining Reforms
• Environmentalists Back FS on Mining Withdrawl
• Our Readers Say
• Huge Nugget To Be Auctioned
• Platinum Group Metals
• Company Notes
• Gold at Mercury Mines
• The Lovitt Mine
• Picks & Pans: "Eye-Balling" for Alaskan Gold
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
• Looking Back
• Oil and Gas in Washington
• As Millennium Nears, Copper No Longer King in Arizona
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