Ask the Experts
May 2014 by Chris RalphGold and silver in Pennsylvania
What are these rocks?
Setting up a gravity dredge
Market for scheelite concentrates?
How can I determine if there are precious metals in the groundwater?
Q: How do I improve my small-scale mining operation’s gold production?
Q: Can you tell us what the indicator rocks are? I’ve looked at the nearby digs and pushes that were made for gold and it looks like we’re digging on some similar material...
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