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...
Ask the Experts
February 2015
• Drones for the independent prospector
• Drones for the independent prospector
Ask the Experts
June 2014
• How many parts per million make a project viable?
• How many parts per million make a project viable?
Legislative and Regulatory Update
November 2014
• Big win by a California suction gold dredger
• Administration locks up another popular gold mining area
• BLM creates de facto wilderness without Congressional approval
• Big win by a California suction gold dredger
• Administration locks up another popular gold mining area
• BLM creates de facto wilderness without Congressional approval
Eastern Arizona: Gold and Base Metal Deposits Part II
March 2011
In this review of precious and base metal deposits in Arizona, it is apparent that several significant mines and mineral deposits occur in eastern Arizona, and there is considerable potential for new discoveries.
In this review of precious and base metal deposits in Arizona, it is apparent that several significant mines and mineral deposits occur in eastern Arizona, and there is considerable potential for new discoveries.
Gold in the Philippines
October 2003
The Philippine archipelago, with over 7,000 islands that stretch for 1,100 miles north-south, was settled by Malaysians several thousand years ago. Ferdinand Magellan landed and was killed there in 1521. Spaniards took over the islands in 1571, and founded Manila, which is located on a large natural harbor. After the Spanish-American war in 1898, the United States took over the Philippines, and found itself in a brutal 6-year war before gaining control of all of the islands.
The Philippine archipelago, with over 7,000 islands that stretch for 1,100 miles north-south, was settled by Malaysians several thousand years ago. Ferdinand Magellan landed and was killed there in 1521. Spaniards took over the islands in 1571, and founded Manila, which is located on a large natural harbor. After the Spanish-American war in 1898, the United States took over the Philippines, and found itself in a brutal 6-year war before gaining control of all of the islands.
Melman on Gold & Silver
November 2003
While there may have been events of the past month that were more important, nothing captured the imagination of the nation and much of the world like the election of Arnold Schwarzenegger as California’s new governor-elect. After weeks of on again, off again judicial rulings and a campaign of astonishing muckraking and innuendo-laden accusations, he did indeed enjoy a resounding victory.
While there may have been events of the past month that were more important, nothing captured the imagination of the nation and much of the world like the election of Arnold Schwarzenegger as California’s new governor-elect. After weeks of on again, off again judicial rulings and a campaign of astonishing muckraking and innuendo-laden accusations, he did indeed enjoy a resounding victory.
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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
