Smaller operations
The Basics of Crushing and Milling Operations
February 2011
In processing gold, silver and other valuable ores, the minerals containing the values, such as metallic gold, silver-bearing sulfides or other minerals, must be freed from the surrounding host rock before those valuable minerals can be captured.
![](http://icmj.com/userfiles/images/201102/large_ball_mills.jpg)
Cyanide-Free Gold Separation
February 2011
Some ores—mostly those with a high free gold content—are very amenable to gravity concentration. Well oxidized ores containing coarse gold are usually best for non-cyanide processes. Ores with significant sulfide content may require the...
![](http://icmj.com/userfiles/images/201102/vibrating-table.jpg)
The Oregon Claim
December 2010
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...
![](http://www.icmj.com/userfiles/images/201012/toc-Oregon-claim.jpg)
The Jenkins Mine Project, Conclusion—Recovery Operations & Summary
November 2010
This project taught me that you don’t need to be Albert Einstein to apply a little science to your prospecting. I learned that most of the science related to suction dredging is actually common sense. All we need to do is take the time to apply it.
![](http://icmj.com/userfiles/images/201011/toc-jenkins.jpg)