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.Brits Thwart Robbery of Gold and Cash
Armed officers arrested seven men near Heathrow Airport after they had overpowered staff at a warehouse holding £80 million ($236 million) in gold and cash and began loading gold into the back of a van.
A Data Miner Builds A Power Sluice
Data mining involves processing huge amounts of digital information to find hidden patterns and financial relationships. To executives, the findings are like gold, but on the weekends, I prefer seeing the real thing in the bottom of my pan.
Fire! In the Gold Country
November 2022Sierra County Gold—Part II
...we will continue our examination of the rich streams and mining districts, and then take a look at some of the big nuggets that have been found here.
Ask The Experts
• Are these gold amounts large enough to interest a mining company?
The Bawl Mill
• Doing hard time, making easy money
• A cozy bear prevents miners from doing research. Well, sort of...
Beach Mining Returns to Washington State
Washington State gold miners received good news when they were recently informed that State officials have granted them authority to resume limited placer gold beach mining...
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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
