Professional Equipment for Serious Detectorists!

Magazine

All Articles

The Trapiches of Chile

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.

Online access required. Please .

Add a Comment

Additional articles that might interest you...

Great Panther Silver


The company acquired the Guanajuato Mine Complex in 2005, and since that time they have carried out extensive drilling programs, both from surface and underground, with particular emphasis being placed on the Cata Clavo Zone.

Guest Editorial—Globalizing Mining in America, Part II


Defeating the Biodiversity Treaty

Placer Testing with Large Samples


Of all the difficult gold placer sites to evaluate, none can compare with trying to dig to bedrock through twenty or thirty feet of soaked overburden through which water is slowly seeping downgrade.

Detecting Nuggets—Overcoming New Challenges


Depth is not an issue unless the site is thoroughly cleaned of shallow trash, and it is far easier to isolate and remove targets using a small coil in a target rich location.

The Madonna Nugget


It was down deeper than I expected for surface trash. It wasn't until I was down six inches that the target screamed from my scoop.

Melman on Gold & Silver


Next, all of silver’s chart action since   mid-2011 has taken place under a declining trend line (dotted line), which has held for more than four years. Any trendline of that duration must be taken seriously.

Gold Depositiion and Gradients of Placer Streams—Part II


The steeper the gradient is, the more potential erosive power to move gold and other bedload sediments, and the more power to remove obstacles to flow.

Subscription Required:
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

Free:
Legislative and Regulatory Update

Advertisements

Garrett Electronics - trusted by real miners & prospectors!
Precious Metals Recovery plants and equipment
Fighting to keep public lands open to the public
Specializing in the processing of precious metal ores!
Watch prospecting shows on your computer right now
Free Online Sample Issue