All Articles
How PGMs Affect Assay Beads
September 2001 by Charles L. Butler
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...Additional articles that might interest you...
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• There’s no place like home...
• To comply or not to comply, that is the question...
Ask the Experts—Are you able to advise me on the status of HR3824?
June 2007
Q: I am doing research regarding potential litigation involving the Endangered Species Act. Are you able to advise me on the status of the following:? HR 3824, The Endangered Species Recovery Act of 2005 (TESRA) introduced in the House of Representatives in September, 2005.
Q: I am doing research regarding potential litigation involving the Endangered Species Act. Are you able to advise me on the status of the following:? HR 3824, The Endangered Species Recovery Act of 2005 (TESRA) introduced in the House of Representatives in September, 2005.
Mining Stock Quotes & Mineral and Metal Prices
November 2009
The Bawl Mill
November 2012
• We spend taxpayer money on this...
• ...but hold back on this.
• We spend taxpayer money on this...
• ...but hold back on this.
Picks & Pans—Drywashing and Detecting in Southern California
November 2004
The late George Elwood, of Johannesburg, California, was well known for helping anyone in need. As a matter of fact, I originally met George when he went out of his way to help me with a flat-tire problem.
The late George Elwood, of Johannesburg, California, was well known for helping anyone in need. As a matter of fact, I originally met George when he went out of his way to help me with a flat-tire problem.
The Guaniamo Diamond Area, Venezuela—Part II
August 2010
The apparent high grade of the ore deposits and the quality of the diamonds seem to clearly indicate that a profitable mining venture could be established on the kimberlite sills...
The apparent high grade of the ore deposits and the quality of the diamonds seem to clearly indicate that a profitable mining venture could be established on the kimberlite sills...
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