All Articles
PGMs in California
September 2002 by Edgar B. Heylmun, PhD
The occurrence of platinum-group metals (PGMs) is rather widespread in California in placer deposits, but they are not of commercial interest as things now stand.
Additional articles that might interest you...
Prospecting for Nickel Deposits
November 2010
The periodic exploration efforts for nickel during periods of high prices have been sporadic and incomplete. There is a role for the prospector and geologist in searching laterites potentially rich in nickel and mafic igneous bodies that may be rich in nickel.
The periodic exploration efforts for nickel during periods of high prices have been sporadic and incomplete. There is a role for the prospector and geologist in searching laterites potentially rich in nickel and mafic igneous bodies that may be rich in nickel.
Another Successful Northwest Miners Rally
October 2007
Eleven year old Josh Evans’ words said it for all of us at the rally: “Finding gold is really fun!”
Eleven year old Josh Evans’ words said it for all of us at the rally: “Finding gold is really fun!”
Siskiyou National Forest Update
July 2002
For the past two years, miners in southwest Oregon have been bombarded by one attack on mining after another.
For the past two years, miners in southwest Oregon have been bombarded by one attack on mining after another.
Legislative and Regulatory Update
December 2017
- Bill to limit Antiquities Act
- PLF seeks relief from Endangered Species Act abuses
Ask the Experts
May 2014
Sampling and mining a historic mining claim
Sampling and mining a historic mining claim
Using A Trommel For Placer Processing
April 2010
The behavior of a trommel is dependent on how it is designed and set up. Important design characteristics include feed rates, screen perforation sizes, cylinder size, rotation speed and incline.
The behavior of a trommel is dependent on how it is designed and set up. Important design characteristics include feed rates, screen perforation sizes, cylinder size, rotation speed and incline.
Melman on Gold & Silver
February 2015
Why, if America’s economic performance is advancing steadily…are two especially sensitive and widely-used commodities performing so poorly?
Why, if America’s economic performance is advancing steadily…are two especially sensitive and widely-used commodities performing so poorly?
Subscription Required:
The Bawl Mill
• What's In A Name?
• Our Readers Say
• BLM Swindles War Hero Out of Gold Mine
• Paleoplacers in the Black Hills
• The River Runs Through It
• DEF Has Another Successful Year
• Fellow Miner, Left for Dead, Needs Our Help
• Picks & Pans: The Professional Nuggetshooter
• Company Notes
• Gold in the First Pan
• Looking Back
• Cedros Island, Mexico
• The Eagle and High Peak Mines of Julian, California
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
