All Articles
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.
Additional articles that might interest you...
Epithermal Gold-Quartz Veins
January 2004
The great mining geologist Waldemar Lindgren used the word “epithermal” to describe a type of quartz vein commonly found in desert regions of the United States and Mexico.
The great mining geologist Waldemar Lindgren used the word “epithermal” to describe a type of quartz vein commonly found in desert regions of the United States and Mexico.
Proposal Submitted for Lab at Homestake
July 2001
Rapid City, S.D. (AP)—Scientists and a team of South Dakotans have submitted a $281 million, five-year plan to turn Homestake Mine in Lead into the world’s largest underground laboratory.
Rapid City, S.D. (AP)—Scientists and a team of South Dakotans have submitted a $281 million, five-year plan to turn Homestake Mine in Lead into the world’s largest underground laboratory.
The North Star Mine
December 2002
Back in the early 1800s, there was a gold mine being dug in a mining community called Garden Valley. Garden Valley is located northeast of Sacramento, between Georgetown and Coloma. They called it Garden Valley because there were some miners who thought there might be more money in growing and selling vegetables than in mining for gold.
Back in the early 1800s, there was a gold mine being dug in a mining community called Garden Valley. Garden Valley is located northeast of Sacramento, between Georgetown and Coloma. They called it Garden Valley because there were some miners who thought there might be more money in growing and selling vegetables than in mining for gold.
A Long Dry Spell
October 2015
Just three weeks ago one of our prospecting team members decided to go back to this location on his own. He had a new detector and wanted to try it out some.
Just three weeks ago one of our prospecting team members decided to go back to this location on his own. He had a new detector and wanted to try it out some.
Fix or Replace, Depreciate or Write-Off
June 2010
In today’s economy, the question is often not whether to fix or replace equipment, fixtures, business assets or even the building housing the mining operation or mining-related business, it is which path is affordable.
In today’s economy, the question is often not whether to fix or replace equipment, fixtures, business assets or even the building housing the mining operation or mining-related business, it is which path is affordable.
Melman on Gold & Silver
May 2014
I believe that the continual imposition of Leftist concepts on an already economically overburdened world is a recipe for some future economic catastrophe...
I believe that the continual imposition of Leftist concepts on an already economically overburdened world is a recipe for some future economic catastrophe...
The San Juan Mountains, Colorado
September 2001
The rugged San Juan Mountains of Colorado rise to 14,309 feet and were a barrier to overland travel for many years. Precipitation, in the form of summer thundershowers and heavy winter snow, is enough to support coniferous forests.
The rugged San Juan Mountains of Colorado rise to 14,309 feet and were a barrier to overland travel for many years. Precipitation, in the form of summer thundershowers and heavy winter snow, is enough to support coniferous forests.
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• Prospecting for Hardrock Gold - Part II
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• 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
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