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Using A Trommel For Placer Processing
April 2010 by Chris Ralph
The behavior of a trommel is dependent on how it is designed and set up. Important design characteristics include feed rates, screen perforation sizes, cylinder size, rotation speed and incline.
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Venezuela’s Chavez Halts Mining Projects
November 2005
Venezuelan President Hugo Chavez said his government has decided to review and possibly cancel all mining concessions, and stop issuing new ones to foreign companies.
Venezuelan President Hugo Chavez said his government has decided to review and possibly cancel all mining concessions, and stop issuing new ones to foreign companies.
Here Come the MineBots
June 2004
In March 2004, Vulcan, a mine exploring robot from the Discovery Miner Program, was shipped to the Vulture City region to investigate the conditions of an abandoned hard rock mine. The shaft was typical of the dangerous mines that are...
In March 2004, Vulcan, a mine exploring robot from the Discovery Miner Program, was shipped to the Vulture City region to investigate the conditions of an abandoned hard rock mine. The shaft was typical of the dangerous mines that are...
How to Utilize Assays and Evaluate Results
June 2009
Ask the lab manager how your ores will be tested, and ask to see the equipment that will be used. If you are told it’s a secret that can’t be explained, you need another assayer.
Ask the lab manager how your ores will be tested, and ask to see the equipment that will be used. If you are told it’s a secret that can’t be explained, you need another assayer.
Legislative and Regulatory Update
June 2019
- House appropriations bills introduced
- Two Minnesota hardrock mining leases reinstated
- Equal Access to Justice Act
The Bawl Mill
May 2018
- Bio-mass is a bio-miss…
- Russia exploiting “useful idiots of unwitting environmental groups…”
- California has the best of the worst…
Melman on Gold & Silver
December 2001
Those who declared that our world would be forever changed after the events of September 11 certainly appear to have been right. Not only is the evening news filled with the events of the anti-terrorist war, but even our vocabulary has changed—along with our geographic knowledge. People who did not know Afghanistan from East Timor—and who could have cared less—can now recite at will facts about Kabul, Islamabad, Jalalabad and Uzbekistan.
Those who declared that our world would be forever changed after the events of September 11 certainly appear to have been right. Not only is the evening news filled with the events of the anti-terrorist war, but even our vocabulary has changed—along with our geographic knowledge. People who did not know Afghanistan from East Timor—and who could have cared less—can now recite at will facts about Kabul, Islamabad, Jalalabad and Uzbekistan.
Utah Approves funds to Fight Feds
April 2015
Republican legislators say the funding is necessary to protect state interests...
Republican legislators say the funding is necessary to protect state interests...
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The Bawl Mill
• Legislative and Regulatory Update
• Prospecting for Hardrock Gold - Part II
• Gold in Alaska - Part II
• Gold Prospecting in Maine - Part I
• Gold Prospecting Is For Ladies, Too
• Sage-Grouse Won't Get ESA Listing For Now
• How to Find Gold in Hot Ground With A VLF Detector
• Oregon County Tries to Interfere With Lawful Mining Operation
• Melman on Gold & Silver
• Mining Stock Quotes & Mineral and Metal Prices
