All Articles
Understanding Hard Rock Mining: Terms and Methods—Part II
July 2004 by Chris Ralph
A better understanding of hard rock mining methods and knowing a little about how these mines work can help the individual prospector to understand reports and stories about both modern and historic mine operations.
Additional articles that might interest you...
The Nome Goldfields
November 2006
Nome has a colorful history built on gold, where over 5 million ounces of the yellow metal has been dug up. Due to limited space, only a tiny fraction of this mining district can be touched upon. It would take volumes to cover all the information...
Nome has a colorful history built on gold, where over 5 million ounces of the yellow metal has been dug up. Due to limited space, only a tiny fraction of this mining district can be touched upon. It would take volumes to cover all the information...
Financing by the Crowd
September 2012
While a great many questions remain unanswered, there is little doubt that a new financing option for small-scale mining operations, “crowdfunding,” is growing as a viable and legitimate funding source.
While a great many questions remain unanswered, there is little doubt that a new financing option for small-scale mining operations, “crowdfunding,” is growing as a viable and legitimate funding source.
Melman on Gold & Silver
August 2011
Occurrences such as these have proven, time and time again, that gold possesses the attribute of maintaining significant value over time, something that cannot be said of unbacked, fiat paper money where every such issuance has eventually deteriorated throughout history into virtual worthlessness.
Occurrences such as these have proven, time and time again, that gold possesses the attribute of maintaining significant value over time, something that cannot be said of unbacked, fiat paper money where every such issuance has eventually deteriorated throughout history into virtual worthlessness.
Using A Trommel For Placer Processing
April 2010
The behavior of a trommel is dependent on how it is designed and set up. Important design characteristics include feed rates, screen perforation sizes, cylinder size, rotation speed and incline.
The behavior of a trommel is dependent on how it is designed and set up. Important design characteristics include feed rates, screen perforation sizes, cylinder size, rotation speed and incline.
Ask The Experts
May 2016
• Can I get advice on a hard rock property in Calaveras County, California?
The Furnace Atmosphere During the Fire Assay
January 2001
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.
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.
So, Where's The Gold?—Finding Gold Detectors Miss
December 2010
We decided to run a detector over each piece. If we got a decent signal we placed the piece into a high-grade pile and the rest went into another pile to be worked on later. This high-grade pile wasn’t that large—maybe 25 pounds...
We decided to run a detector over each piece. If we got a decent signal we placed the piece into a high-grade pile and the rest went into another pile to be worked on later. This high-grade pile wasn’t that large—maybe 25 pounds...
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