Ask the Experts - processing plants that can extract rare earth metals
April 2013 by Chris RalphQ: Do you know of any processing plants that can extract rare earth metals?
Q: Can you please tell me about diamond fluorescense?
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?
What is the ceramic-like material embedded with gold?
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