Small Mining Operations
The Fire Assay of Carbon
February 2016 by Hank Chapman, Jr.
Carbon, activated charcoal, or “char,” as some old timers refer to it, can be an assayer’s nightmare.
Additional articles that might interest you...
Wyoming's Billion Dollar Nugget—The Trilogy Ends
August 2011
Our testing over the past 15 years was to confirm or deny the USGS report completed in 1978. Besides the half acre test dig, we completed many additional test digs by hand and with the backhoe.
Our testing over the past 15 years was to confirm or deny the USGS report completed in 1978. Besides the half acre test dig, we completed many additional test digs by hand and with the backhoe.
Small-Scale Hard Rock Production
December 2015
So far this year we have recovered over three pounds of gold and the hard rock veins seem to go on forever. We now have three claims that can produce good enough gold to set up a productive operation.
So far this year we have recovered over three pounds of gold and the hard rock veins seem to go on forever. We now have three claims that can produce good enough gold to set up a productive operation.
Hard Rock University: Expensive Hobby or Real Business?
July 2015
Improper sampling techniques lead to more avoidable heartache than almost anything else in micro mining.
Improper sampling techniques lead to more avoidable heartache than almost anything else in micro mining.
Small-Scale Hard Rock Mining With Water Recycling
March 2015
Once I have established the presence of gold in the sample, I collect five-gallon bucket quantities of the rock material for processing back at my shop.
Once I have established the presence of gold in the sample, I collect five-gallon bucket quantities of the rock material for processing back at my shop.
The Highs and Lows of Drywashing
August 2016
We were met with a plethora of mechanical problems with the dry washer and even a few with the excavator that were at times frustrating, but we were in this for the long haul, so we needed to solve these problems and move forward.
We were met with a plethora of mechanical problems with the dry washer and even a few with the excavator that were at times frustrating, but we were in this for the long haul, so we needed to solve these problems and move forward.
A New Method for Handling Stubborn Gravity Middlings
July 2016
The solution focused on the relative difference in malleability between gold and waste, rather than the difference in density exploited by gravity circuits.
The solution focused on the relative difference in malleability between gold and waste, rather than the difference in density exploited by gravity circuits.
California Dredgers: A Step Closer to Getting Back in the Water
June 2014
...Judge Ochoa ordered the parties to participate in mandatory settlement hearings starting June 24, 2014.
...Judge Ochoa ordered the parties to participate in mandatory settlement hearings starting June 24, 2014.
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