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...
Time for a New Approach: Detecting Float Gold
September 2013
The first pieces found were in a spot that most gold hunters would not even detect, right in the middle of a downslope meadow.
The first pieces found were in a spot that most gold hunters would not even detect, right in the middle of a downslope meadow.
The Bawl Mill
June 2003
• What's that smell?
• Do you recognize the face on that milk carton?
• The debate over hockey
• Sir, what size and color bra do you prefer?
• Beam me up
• What's that smell?
• Do you recognize the face on that milk carton?
• The debate over hockey
• Sir, what size and color bra do you prefer?
• Beam me up
Legislative and Regulatory Update
July 2007
• Assembly Bill 1032
• Cache County v. USFS
• CMA appeals cyanide ban
• Assembly Bill 1032
• Cache County v. USFS
• CMA appeals cyanide ban
The Business of Mining: Cars, Trucks and Tax Deductions
December 2006
Most importantly, self-employed miners, prospectors or employees (even of their own mining-related business) who own or lease an automobile, can utilize the standard rate so long as they operate only one car at a time for business purposes.
Most importantly, self-employed miners, prospectors or employees (even of their own mining-related business) who own or lease an automobile, can utilize the standard rate so long as they operate only one car at a time for business purposes.
The Essentials of Dry Washing
August 2013
Most dry washers have a feed rate adjustment. It needs to be set so that the material flows evenly over the riffles and does not bury them.
Most dry washers have a feed rate adjustment. It needs to be set so that the material flows evenly over the riffles and does not bury them.
Gold in Mono County, California
June 1999
Lode gold and silver mines and prospects can be found in many parts of Mono County, from the Sweetwater Mountains on the north to the White Mountains on the south, and at elevations ranging from 5,000 to 12,000 feet. Mining activity on the rugged east flank of the Sierra Nevada is now severely restricted, especially in resort areas and where lands adjoin Yosemite National Park.
Lode gold and silver mines and prospects can be found in many parts of Mono County, from the Sweetwater Mountains on the north to the White Mountains on the south, and at elevations ranging from 5,000 to 12,000 feet. Mining activity on the rugged east flank of the Sierra Nevada is now severely restricted, especially in resort areas and where lands adjoin Yosemite National Park.
Gold at Mercury Mines
May 1999
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There are numerous old mercury (quicksilver) mines in the central Coast Ranges of California, from San Benito County on the south to Lake County on the north, a distance of 225 miles.
There are numerous old mercury (quicksilver) mines in the central Coast Ranges of California, from San Benito County on the south to Lake County on the north, a distance of 225 miles.
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The Bawl Mill
• A True Endangered Species
• Guest Editorial—Vertical Disintegration
• USGS Reports Increase of Imported Minerals
• The San Juan Mountains, Colorado
• A Silver Opportunity
• Gold in Virginia
• Picks & Pans: DEF Prospectors Rally Was a Huge Success
• News From GATA
• Our Nugget Shooting Adventure
• Fly Fishing the Mine Tailings/Headwaters of the Clark Fork, Montana
• Company Notes
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
