Ask the Experts

March 2013 by Chris Ralph

Ask The Experts: Can you review the differences in dry washers?

March 2017

Q: What are the advantages or disadvantages of hand crank vs. battery power vs. blower? And your preference?

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August 2013
Q: Would a mining company be interested in this area for just the magnetite?

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September 2014
• Using drywashers to work desert gravels

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December 2014
• A place for mining equipment "on the cheap"?

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February 2016
Designing my own dredge...

Ask The Experts—Extraction of micro gold from black sands

October 2011
I know big mining companies use cyanide and other leach systems to recover gold from ore. Is this the only economically feasible way to recover the values?

Ask The Experts—Iridium

December 2010
Q: I believe I have found a deposit that contains iridium. What can you tell me about iridium? Are there any tests I can do in the field to confirm it is iridium? How much is iridium worth? Where can I get it assayed? Can I refine it myself?

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