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...
The Ferris-Haggarty Copper-Gold Mine, Grand Encampment District, Wyoming
January 2003
At the close of the 19th Century, optimism was high that Wyoming would become an important source for copper much like the neighbor states of Colorado, Utah, and Montana. This dream was short-lived...
At the close of the 19th Century, optimism was high that Wyoming would become an important source for copper much like the neighbor states of Colorado, Utah, and Montana. This dream was short-lived...
Melman on Gold & Silver (2007 Year in Review)
December 2007
This past four weeks saw a major shift in the scope of financial headlines. Where recent months have focused almost entirely on the “subprime” crisis and resultant credit problems, the US Dollar itself became the center of attention last month as it entered a period of severe decline against the Euro, Australian Dollar, British Pound, Swiss Franc and Canadian Dollar.
This past four weeks saw a major shift in the scope of financial headlines. Where recent months have focused almost entirely on the “subprime” crisis and resultant credit problems, the US Dollar itself became the center of attention last month as it entered a period of severe decline against the Euro, Australian Dollar, British Pound, Swiss Franc and Canadian Dollar.
Legislative and Regulatory Update
November 2000
• More National Monument news
• Land-use advocates file another suit over National Monuments
• NWMA's Linda Skaer addresses EPA in northern Idaho
• More National Monument news
• Land-use advocates file another suit over National Monuments
• NWMA's Linda Skaer addresses EPA in northern Idaho
Historic Mining at Mount Diablo, CA
September 1999
Located in Contra Costa County in the East Bay region of the San Francisco Bay Area, Mount Diablo was the site of the largest coal mining operation in the state in the last half of the nineteenth century. The northern foothills of the mountain produced nearly four million tons of coal.
Located in Contra Costa County in the East Bay region of the San Francisco Bay Area, Mount Diablo was the site of the largest coal mining operation in the state in the last half of the nineteenth century. The northern foothills of the mountain produced nearly four million tons of coal.
Famous Yuba River Dredge Sinks
March 2003
The Yuba #21 gold dredge sunk in the Yuba Goldfields of northern California in late January.
The Yuba #21 gold dredge sunk in the Yuba Goldfields of northern California in late January.
Ask the Experts
March 2014
Gold out of auqa regia
Gold out of auqa regia
Melman on Gold & Silver
August 2009
...a substantial number of news headlines reflected the growing realization that much of the “green shoots” optimism of the past few months was premature.
...a substantial number of news headlines reflected the growing realization that much of the “green shoots” optimism of the past few months was premature.
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