Ancient assaying
Title Page of First Edition - Lazarus Ercker's Treatise on Ores and Assaying 1574
"Fire Assay" bring visions of a bright orange glow coming from a crucible oven.
Cupelling in assay oven
Lead has collected the precious values from the ore
BLM report on assayers
All Laboratory Photos
Assay Ton defined
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Avoiding Scams
Copyrighted 2005 by Mike Lowen - All rights reserved
Silver & Gold in the Sierra Madres'
Goldvault Mining Camp
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