Ask the Experts

February 2015 by Chris Ralph

Testing Ores for Free Gold

December 2011
I get a number of questions from people about testing and treating hard rock ores. The simplest way, but also an expensive one, is to just have an assay test done by an independent assay firm. As an alternative...

Ask The Experts: Should I remove someone else’s claim post from my claim?

October 2016

Q: Can and should you remove their poles and notice right then and there or should you wait until you have convinced them of their trespass?

The Heavy Minerals in Your Concentrates

June 2016
The fact that mineral deposits can contribute specific types of heavy minerals is why the analysis of the heavy mineral concentrates in the streams of an area can be an important prospecting technique for finding undiscovered mineral deposits.

Company Notes

August 1999
• Homestake Mining Company
• Placer Dome Inc.
• AZCO Mining Inc.
• Guyana Diamond Corp.
• Canadian Mining Company, Ltd.
• Hecla Mining Company
• Pan American Silver Corp.

Refractory Gold Processing

February 2013
After your excitement peaks when you first receive the high gold assay from the vein you just exposed, you ponder how you will extract and sell your gold. You will need to develop a flow sheet for your process to optimize your recovery and minimize your costs and permit requirements.

Gold Recovery with Centrifugal Bowls

July 2014
Centrifugal bowls are very efficient, and with proper operation they can consistently achieve gold recoveries above 95% with gold of about 50 mesh size.

Alternative Gold Leaching Methods

January 2014
The ideal leaching chemical would leave behind what we don't want or need in the ore and take only the valuable metals.

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