All Articles
The Trapiches of Chile
October 2000 by Dr. Ralph E. Pray
In Chile, the trapiche (tra-peach-ee) method of milling gold ore began more than 400 years ago. The first trapiche, also known as a Chilean mill, was a stone wheel weighing two or three tons rotating on an axle.Additional articles that might interest you...
GPS Speeds Filing of Claims in Alaska
July 2000
Alaska Governor Tony Knowles signed a bill making several beneficial changes to Alaska mining claim location law.
Alaska Governor Tony Knowles signed a bill making several beneficial changes to Alaska mining claim location law.
The Bawl Mill
February 2008
• The third time is a charm
• Haunted by his past...
• This call will (not) be monitored for security purposes...
• The third time is a charm
• Haunted by his past...
• This call will (not) be monitored for security purposes...
The Klamath Mountains
September 1999
Over 7 million ounces of gold have been produced in the Klamath Mountains of northwestern California, 64% of which has been from placers.
Over 7 million ounces of gold have been produced in the Klamath Mountains of northwestern California, 64% of which has been from placers.
The Bawl Mill
November 2016
By the numbers, election edition
By the numbers, election edition
My Lucky Month of March
June 2013
My wife Maureen and I spend part of our winter season in the Quartzsite, Arizona area. One fine March morning, we left our RV camping area at approximately 10am in search of that elusive yellow metal with our metal detectors.
My wife Maureen and I spend part of our winter season in the Quartzsite, Arizona area. One fine March morning, we left our RV camping area at approximately 10am in search of that elusive yellow metal with our metal detectors.
Selecting A Low-Risk Region To Explore, Mine or Invest
August 2019
“The evidence is clear—mineral deposits alone are not enough to attract precious commodity investment dollars...”
How Much Gold Is In My Gold-Quartz Specimen?
June 2010
The method is based on the fact that gold is much denser than quartz, and the more gold that is present in a specimen, the higher the density of the piece will be as a whole.
The method is based on the fact that gold is much denser than quartz, and the more gold that is present in a specimen, the higher the density of the piece will be as a whole.
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The Bawl Mill
• A Word from the Editor
• Under the Guise of Environmental Protection—EPA Revealed
• The Centennial Lode and the Centennial Ridge District, Wyoming
• Company Notes
• Picks & Pans—In Search of Nome Creek Gold
• Massive Sulfide Deposits in Oregon
• Recreational Dredging on the South Yuba River
• Tales of Liberty Gold
• Drywashing Alluvial Placers
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
