Small Mining Operations
Wyoming's Billion Dollar Nugget—The Trilogy Ends
August 2011 by David C. Freitag
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.
Proper Assaying of Placer Samples
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 Subsurface Suction Dredge
The problems of the submersible dredge tube are addressed by the subsurface dredge, where the enclosed sluice recovery tube is suspended from a flotation assembly...
Small-Scale Processing of Hard Rock Ores
Depending on the ore and if significant sulfides are present, a hard rock miner may be able to get away with simply using a flux to digest the other minerals that may be present.
Bering Sea Gold—Part II
In last month’s issue we covered the initial discovery of gold, the subsequent gold rush that occurred around Nome, some of the geology of the area and past production. We’ll conclude the article in this issue with a further examination of the geology and deposit types, discuss the resources...
Nice Specimen Gold Recovered in Northern California
Each specimen is carefully examined to determine if it would be beneficial or not to use an acid treatment to reveal more of the gold.
Prospecting Hard Rock
We panned out maybe three gold pans of the material and we were shocked at the gold that was there. This rock appeared to be rich.
Resurrecting An Old Hard Rock Mine—Gold At Last!
We’ve been busy with a plethora of projects, all aimed at gathering gold into a pile big enough to brag about. We’re not there yet, but I’ll show you some of the interesting projects we’ve completed since we talked last.
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