All Articles
The Furnace Atmosphere During the Fire Assay
January 2001 by Dr. Ralph E. Pray
It has been claimed that the introduction of excess air to the assay furnace during sample fusion can materially increase the gold yield. Testimony by expert witnesses for the defense in recent federal hearings dealing with the dependability of the gold fire assay includes data purported to show this.Additional articles that might interest you...
Mining Camp Adventures—The Collinsville-Twin Creek Goldfields
March 2002
Collinsville had been the scene of several small gold stampedes. The golden paystreaks had paid well here at times, with two main creeks producing most of the gold, including a 19 ounce nugget found on nearby Mills Creek, which flowed 100 yards away from the main camp.
Collinsville had been the scene of several small gold stampedes. The golden paystreaks had paid well here at times, with two main creeks producing most of the gold, including a 19 ounce nugget found on nearby Mills Creek, which flowed 100 yards away from the main camp.
Ask The Experts—How do you amend a placer claim?
May 2011
Q: How do you amend a placer claim?
Q: How do you amend a placer claim?
The Eagle and High Peak Mines of Julian, California
September 2002
At an altitude of over 4,000 feet, in the mountainous terrain of eastern San Diego County, lies the once productive Julian Mining District. Beginning with placer prospecting in 1869, this area moved rapidly into underground quartz or vein mining for gold.
At an altitude of over 4,000 feet, in the mountainous terrain of eastern San Diego County, lies the once productive Julian Mining District. Beginning with placer prospecting in 1869, this area moved rapidly into underground quartz or vein mining for gold.
2006 National Mining Hall of Fame Inductees
August 2006
The four inductees are Earl H. Beistline (1916-Present), R. A. F. Penrose (1863-931), Robert M. Reininger (1912-2006), and John Stanton (1830-1906).
The four inductees are Earl H. Beistline (1916-Present), R. A. F. Penrose (1863-931), Robert M. Reininger (1912-2006), and John Stanton (1830-1906).
MMAC & PLP Update
October 2016
There are some miners who are under the impression that an organized Mining District will immediately get the regulatory agencies off their backs so they can start digging or dredging again.
There are some miners who are under the impression that an organized Mining District will immediately get the regulatory agencies off their backs so they can start digging or dredging again.
Proper Assaying of Placer Samples
November 2012
The whole purpose of sampling mineralized ground is to measure the values in a small volume of material that would be representative of a much larger volume of similar material. The key word is representative. Chemical and fire assaying will not accurately represent placer deposits by themselves.
The whole purpose of sampling mineralized ground is to measure the values in a small volume of material that would be representative of a much larger volume of similar material. The key word is representative. Chemical and fire assaying will not accurately represent placer deposits by themselves.
Legislative and Regulatory Update
November 1999
Robert Sanregret—Attorney at Law
Western Mining Council
National Association of Mining Districts
Robert Sanregret—Attorney at Law
Western Mining Council
National Association of Mining Districts
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