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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.Resurrecting An Old Hard Rock Mine—Safety Is No Accident
Now it was time for the nerve-wracking part of the job: actually removing anything from the hanging wall we deemed to be in need of removal because it was either loose, could be loose, looked loose, or we felt it was just downright dangerous
The Ely Copper-Gold District of Nevada
The main ore deposits of the Ely district are associated with an east-west belt of altered and mineralized rocks measuring about one mile wide that extends 8 miles westward from Ely.
Epithermal Ore Deposits Associated With Tertiary Volcanism—And the Feasibility of Metal Detecting for Them
Epithermal ore deposits are common in regions of late volcanic activity, especially areas associated with Miocene and later Pliocene extrusive volcanics that have not been deeply eroded since the ore was deposited. Many are simple fissure veins, but stock-works and ore-pipes are also common.
Beginner's Luck
Their first cleanup total was more gold than they had ever found. These guys were deliriously overjoyed with their good fortune.
Our Readers Say
Comments Regarding our Gold Prospecting and Mining Summit in mid-May...
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Kerry Proposes Large Fees on Miners
John Kerry’s proposal to increase mineral royalties to raise money for national parks has drawn strong opposition from officials and mining interests in Nevada, which produces 81 percent of the nation’s gold.
Miners Find Encouraging Prospects Near Livengood
New exploration on land that was scoured for gold years ago near Livengood indicates the property could be developed into a mine on a scale similar to the Fort Knox Mine, according to a Colorado-based company.
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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
