All Articles
The Ocampo District, Chihuahua
April 2003 by Edgar B. Heylmun, PhD
The village of Ocampo is wedged in a canyon about 178 miles, by Mexican Highway 16, west of the city of Chihuahua. It is a few miles west of Basaseachic Falls, and a few miles south of Highway 16, in high chaparral at an elevation of 6,500 feet. The completion of Highway 16 across the Sierra Madre Occidental greatly improved access to the region...Additional articles that might interest you...
The Tombstone Silver-Lead District, Arizona
April 2016
In 1877, a prospector named Ed Schieffelin discovered silver in “the middle of nowhere” and staked two claims: “Tumbstone” and “Graveyard.” Soon a town and mining district were organized and acquired the name “Tombstone” after making a spelling correction.
In 1877, a prospector named Ed Schieffelin discovered silver in “the middle of nowhere” and staked two claims: “Tumbstone” and “Graveyard.” Soon a town and mining district were organized and acquired the name “Tombstone” after making a spelling correction.
Ask the Experts—What is barite used for?
June 2007
Q: Could you inform me as to what “barite” is used for? Where can I locate a company that mines barite?
Q: Could you inform me as to what “barite” is used for? Where can I locate a company that mines barite?
Newmont Fined for Fatality
August 2009
The agency said managers “showed a disregard for the miners’ welfare” and acted with “more than ordinary negligence” before the victim fell through a sinkhole while operating a large loader about 200 feet below the entrance of the mine.
The agency said managers “showed a disregard for the miners’ welfare” and acted with “more than ordinary negligence” before the victim fell through a sinkhole while operating a large loader about 200 feet below the entrance of the mine.
Designing and Evaluating Placer Gold Recovery Plants
September 2014
For this article, I am focusing on industrial production plants that can handle 10 cubic yards per hour or more and would be fed by a loader or other heavy equipment...
For this article, I am focusing on industrial production plants that can handle 10 cubic yards per hour or more and would be fed by a loader or other heavy equipment...
Take a Kid Detecting
January 2014
I thought things started off okay until I realized I had forgotten some of my gear and had to return to the house. My troubled start was not helped when my boy came up to me a few minutes after my return to show me his first nugget of the day.
I thought things started off okay until I realized I had forgotten some of my gear and had to return to the house. My troubled start was not helped when my boy came up to me a few minutes after my return to show me his first nugget of the day.
Ask the Experts
June 2014
• Building a jaw crusher
• Building a jaw crusher
Ask the Experts - processing plants that can extract rare earth metals
April 2013
Q: Do you know of any processing plants that can extract rare earth metals?
Q: Do you know of any processing plants that can extract rare earth metals?
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The Bawl Mill
• Impact of Habitat Designations Grossly Underestimated
• Manslaughter Charges Dropped Against Sixteen to One Mine
• A Unique Prospecting Method
• Over the Divide
• Cripple Creek, Colorado
• Picks & Pans: Virginia Prospecting
• PLP Gets the Key!
• Mariposa, California
• The Collaboration
• Mud Creek Placer Mine
• Mining Stock Quotes and Mineral & Metal Prices
• Looking Back
• Melman on Gold & Silver
