Small Mining Operations
The Mysterious Telluride Minerals
August 2020 by Chris Ralph
…let’s dive in and take a closer look at these rich gold and silver-bearing minerals to find out what they are, where they form, and how to identify them.
Crystallized Gold Mines of California
Gold specimens that include visible crystal formations are among the rarest, most attractive and most valuable forms of gold to be found.
How to Refine Silver—Pt I
Silver refining has been used from ancient times to change the characteristics of the metal. Early metallurgists refined silver by heating it a couple hundred degrees above its melting point and holding the metal at an elevated temperature for a period of time.
The 10-Ton Boulder: Expanding Grout Demolition
Imagine you have located a source of virgin placer ore containing immense gold value. Now imagine that there is a 10-ton monolith of extremely hard gneiss in between you and payday.
Modern Mining Reclamation
A study showed that between 1930 and 1980, only a quarter of one percent of the land in the United States was used in all mining applications combined, including surface mining, tailings disposal, underground mines, and all mineral processing facilities.
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Options for affordable crushers for small mining operations
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.
Understanding Rock Formations: Petrology for Prospectors
There are times when being able to recognize a type of rock can make you a much more successful prospector.
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• Hard Work Pays Off On Hard Rock
• Detecting: Getting Away From The Heat And Into The Gold
• The Coolgardie Gold Mining Camp of Southern California
• Gold Prospecting for Better or Worse: How Curiosity Burst My Platinum Bubble
• Prospecting for Copper—What to Look for on the Outcrop
• Dredging Tips and Tricks: A Measure of Water Pump Efficiency
• Hard Rock 101: Small-Scale Blasting
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