Small Mining Operations
Wyoming's Billion Dollar Nugget—The Trilogy Ends
June 2011 by David C. Freitag
The next hurdle to jump was whether the trommel motor would start again after sitting on the desert for six years without being started. The last time it had taken a three foot pipe wrench to bust it loose.
A Few Methods for Sampling Hardrock Deposits
With a little homework and a methodical approach to sampling, a prospector can determine if a deposit is worthy of more of an investment...
Conductive Minerals and Your Metal Detector
...most prospectors don't even think about the conductivity of minerals, but there are some that do conduct electricity to a certain degree, so metal detectors will respond to them.
Underground Mining: Stoping Methods
In an old mine that does not have stopes, you know the old miners did not take much if any ore out of that excavation. On the other hand, if you see large stopes within the mine you know that it is these places where the miners found profitable ore deposits within the vein.
Ask the Experts
NOI or POO for small backhoe
Gold Recovery with Centrifugal Bowls
Centrifugal bowls are very efficient, and with proper operation they can consistently achieve gold recoveries above 95% with gold of about 50 mesh size.
Resurrecting An Old Hard Rock Mine—A Series of Small Victories
…we cheered and high-fived each other as the ore cart slowly crested the top of the headframe, then picked up a bit of speed on the short downhill section and came to an abrupt halt, ejecting its contents of ore…
From Curiosity to Mine Owner
His brother’s friend showed him a vial of gold that originated from his family’s mine in Honduras. Within two weeks Ernie had flown to Honduras to get a first-hand tour of the historic mine and the primitive operation underway to recover the gold.
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