Small Mining Operations
Resurrecting An Old Hard Rock Mine—A Series of Small Victories
February 2019 by Ron Kliewer
…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…
Gold Dredging on Oregon's South Umpqua
Familiarizing oneself with an unfamiliar part of the country is often a requirement of successful gold prospecting. In the pursuit of gold, it may become necessary for a prospector to branch out into new hunting grounds.
A Test Grid Dredged for Gold Values
The evaluation must also consider the gold fineness or purity. The purity of the Sugardaddy nuggets is estimated at 850 fineness, meaning 85% is gold (Au), 12% is silver (Ag) with 3% being other gangue alloyed metal.
Evolution Of A Desert Wash Plant
The water instantly dropped though the screen, leaving a pile of mud behind! I was so excited that I replaced it with a 150-mesh screen, and the same thing happened!
The Challenge of Winter Dredging
Dredges actually do pretty well in freezing conditions. There are a few tips you should know, however.
Mining Pegmatite Deposits
With successively lower temperatures as the water mixture cools, new sets of minerals are formed and many of those stable at a higher degree of heat became subject to alteration as the temperature progressively moved lower.
Ask The Experts
How do I set up a Miller table?
The Basics of Froth Flotation
I thought it might be worthwhile to take a look at the basics of this important mineral separation technique and how a miner can use it to recover the values out of an ore.
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The Bawl Mill
• Ask The Experts - Do I need something other than a fire assay for PGMs?
• Ask The Experts - This low-grade ore is not worth processing
• Placer Gold Deposits of New Mexico
• The Hunch
• The Basics of Exploration Leases and Contracts—Part I
• Gold Prospecting for Better or Worse: A Long Hike
• Mutiny on The Mason
• Who Jumped Whose Claim First?
• The Value of Evidence
• Over The Divide: Charles "Chuck" Cushman
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
