Some Tips and Tricks for Dredgers: Determining Pulley Size and Belt Length

April 2020 by Harry Griffin

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 Pothole Patch

January 2015
"Suh-wheet!" I exclaimed as I sprang to my feet and quickly pumped my detector coil high overhead to alert Smokey that I had just found a nugget.

Comments on Gold Rush and Bering Sea Gold Series

March 2014
The 316 Mining Company has not been all that successful, but does not ever seem to learn from their past mistakes.

Hidden Value in Old Tailings

March 2014
The 15 rare earth elements were discovered long after the gold rush began to wane, but demand for them only took off over the past 10 years...

Our Readers Say

February 2014
• Prospecting for Diamonds in Kimberlite by W. Dan Hausel
• Miners referring to their activity as “recreational”

Gold Placers in Italy

August 2018

Gold is a fairly widespread mineral in the Italian Alps and in the Northern Apennines. It is found both in primary mineralization and in past and recent floods.

Bedrock

March 2014
I am going to break bedrock down a bit and explain my view of the varying scenarios I come across in the field.

Hunches, Choices and Guesses

September 2013
When you approach a location, even if you've been there before, you should consider all the factors and conditions present at the site. This includes both natural and man-made factors.

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