Ask the Experts
June 2014 by Chris Ralph• How many parts per million make a project viable?
Q: ...where would you recommend selling class rings and other scrap gold?
Using GIS systems to aid in mapping.
What minerals are magnetic? I have heard that super magnets (rare earth magnets) can capture platinum. True?
Q: Is there a special name for this silver and copper alloy?
Q: Graphite spray to prevent sticking when using cast iron molds
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