Small Mining Operations
Sampling for Success—Part II
April 2020 by Chris Ralph
The first and most important thing of the sampling process is to try to be as unbiased as possible. There is a natural tendency to select rock that looks the best—even unconsciously.
Setting Up A Placer Operation
Trommels come in two basic sections. The first section is called the scrubber unit. The second is the punch plate, where the gravels and ore of a specified size drop out into a variety of sluice box recovery units.
Some Tips and Tricks for Dredgers: Determining Pulley Size and Belt Length
If Epd is larger, then the compressor will be spinning faster than the manufacturer’s maximum specified RPM and might destroy itself. If this happens, then the compressor again might not produce enough air to support a diver. Neither is a desired outcome.
The Oregon Claim
When I started dredging a short distance downstream from that feature I realized that I was into a major paystreak and much of the gold was coming right out of the upper gravel. I could see the chunky pieces falling out of the gravel as they were pulled into...
Where To Spend Money To Increase Value
January 2024Using Countercurrent Material Flow to Improve Gold Recovery Efficiency
There is a material processing principle widely used in large milling operations to improve recovery that is poorly understood by most of the micro-mining and prospecting community...
Proper Placer Sample Processing
...your sampling procedures should not be designed to catch gold your mining technique will never recover.
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.
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The Bawl Mill
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• Miners Fight Back When BLM Says 'Your Claim Is Too Long'
• It's Another 'Ben Day'
• How to Research Prospecting Locations and Mining Claims
• Some Tips and Tricks for Dredgers: Determining Pulley Size and Belt Length
• Where Will The Gold Price Go From Here?
• Holcomb Valley Gold, Southern California
• Gold Prospecting for Better or Worse: The Good Luck and Bad Luck of Prospecting With Animals
• Lode Miner Continues to Find Pocket Gold
• Judge Backs Minnesota's Twin Metals Mine in Lease Dispute
• Over the Divide: Rick Lague
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
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