Ask the Experts
June 2014 by Chris Ralph• Building a jaw crusher
• Should I introduce mercury in the centrifugal bowl to aid gold recovery?
What to do with black sands
Why are there no maps of the so-called mining districts?
Q: Can you tell me if this deposit is worth working? It is a quartz vein and I had it analyzed for gold, copper, rare earths and other metals.
Q: I have tried various leaching techniques from which I cannot get a precipitate.
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