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The Bawl Mill
February 2010 by Staff
• Copenhagen—Don't ask, don't tell• Will consider lease or trade
• By the numbers
Additional articles that might interest you...
Mining Ends in Leadville
March 1999
An era ended in Leadville February 4, when the last miners left the Black Cloud mine and hung up their brass tags for the last time.
An era ended in Leadville February 4, when the last miners left the Black Cloud mine and hung up their brass tags for the last time.
Our Readers Say
March 2017
Judge Gives OK to Nevada Mining Tax Initiative
April 2012
A proposed constitutional amendment to raise the cap on mining taxes can proceed as written, a state judge ruled March 14.
A proposed constitutional amendment to raise the cap on mining taxes can proceed as written, a state judge ruled March 14.
Throw-Away Gold: Back to Basics
February 2002
Placer mining, whether for profit or recreational purposes, involves separation of free gold from the gold-bearing sands (gangue) of alluvial deposits by methods using specific gravity. The free gold can vary from 17 to 19.3 in specific gravity terms, depending on the alloy mix, which is usually silver, but can be copper, lead, sulfur, tellurium, antimony, or mercury.
Placer mining, whether for profit or recreational purposes, involves separation of free gold from the gold-bearing sands (gangue) of alluvial deposits by methods using specific gravity. The free gold can vary from 17 to 19.3 in specific gravity terms, depending on the alloy mix, which is usually silver, but can be copper, lead, sulfur, tellurium, antimony, or mercury.
CMA Conference Summary
July 2001
I recently attended two out of three days of the California Mining Association’s Annual Conference in Monterey, California, and found it well worth my time.
I recently attended two out of three days of the California Mining Association’s Annual Conference in Monterey, California, and found it well worth my time.
How PGMs Affect Assay Beads
September 2001
Most fire assayers are trained to observe the cupelled beads very carefully, noting any discoloring or surface roughness that might indicate that one or more of the platinum group metals (PGMs) are present. The “clues and tests” I have included in this article stem from several sources, including my 35 years of experience performing torch assays...
Most fire assayers are trained to observe the cupelled beads very carefully, noting any discoloring or surface roughness that might indicate that one or more of the platinum group metals (PGMs) are present. The “clues and tests” I have included in this article stem from several sources, including my 35 years of experience performing torch assays...
California's Mother Lode Quartz Veins
May 2015
The actions of the hot, ore-bearing solutions are not limited only to the deposition of material within the walls of the fissures.
The actions of the hot, ore-bearing solutions are not limited only to the deposition of material within the walls of the fissures.
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