Ask the Experts
April 2014 by Chris RalphBad advice from Fish & Game
• Sweep speed and sensitivity settings for a GPX-4500
Replacing cloth on a drywasher
While there is no metal detector that will see only gold, there is a device that can reliably distinguish gold from lead, copper, iron or other metals. It is an X-Ray fluorescence tester, sometimes called an XRF gun.
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