Ask the Experts
January 2015 by Chris Ralph• Should I introduce mercury in the centrifugal bowl to aid gold recovery?
Q: I live near the Gold Basin area of Arizona. What detector will go deep and be easier to use for small gold? I need some help.
Q: Who manufactures the diagonal vibrating table?
Some fellow in Texas was selling a Spanish needle—a dousing device used to recover minerals in the old days. Do you know anything about these?
How can I determine if there are precious metals in the groundwater?
• How small should I crush my hard rock ore?
Q: Is there a special name for this silver and copper alloy?
• Real or fool's gold?
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