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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.Mining Stock Quotes and Mineral & Metal Prices
Gold in Australia
Australia is an island continent between the Pacific and Indian Oceans that is nearly 3 million square miles in area. Some 20 million people, mostly of British descent, live on the island, especially in coastal areas and in five major cities along the...
Critical Minerals: Titanium—Part II
There are both hard rock and beach sand types of titanium deposits, but the hard rock deposits need to be at least 10 percent titanium while the beach sands often are economic with only two or three percent titanium.
Revisiting the Rocker Box
The first location we worked was a small, dry ravine cutting through many mineralized zones in an area where some hard rock mining had taken place in the past.
The Douglas Creek Placer District, Medicine Bow Mountains, Southeastern Wyoming
It was July. The cool mountain air filtered the harsh Wyoming sun making the day fairly pleasant. Winter had finally receded, but an occasional drift hid in the shadows of the forest. I drove into the heart of the Medicine Bow National Forest...
Evolution Of A Gold Prospect
The adage of, “The harder I work, the luckier I get,” has profound meaning, but it doesn’t always apply to prospecting.
Bedrock
I am going to break bedrock down a bit and explain my view of the varying scenarios I come across in the field.
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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
