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Reading A River: Finding The Paystreaks—Part I
December 2008 by Chris Ralph
![Gold will be concentrated behind large boulders like this one during flooding or high water.](/UserFiles/file/200812/toc-reading-a-river-2.jpg)
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Looking Back
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Excerpts from California Mining Journal, our original title, published 50 years ago this month.
Excerpts from California Mining Journal, our original title, published 50 years ago this month.
Gold Recovery with Centrifugal Bowls
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Centrifugal bowls are very efficient, and with proper operation they can consistently achieve gold recoveries above 95% with gold of about 50 mesh size.
![](http://www.icmj.com/userfiles/images/201407/TOC-bowls.jpg)
Ask the Experts
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Gold in Minnesota?
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A Short History of Hydraulic Mining in California
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To add to the confusion, the dam wasn’t holding back a large amount of water. It was full of gravels and had a small creek running through it. I had to know more.
My Lucky Month of March
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My wife Maureen and I spend part of our winter season in the Quartzsite, Arizona area. One fine March morning, we left our RV camping area at approximately 10am in search of that elusive yellow metal with our metal detectors.
![](http://www.icmj.com/userfiles/images/201306/TOC-lucky-month.jpg)
Legislative and Regulatory Update
January 2008
• Forest Service proposes further changes to mining regs
• Preble’s mouse resurrected
• Forest Service proposes further changes to mining regs
• Preble’s mouse resurrected
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