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    Berdan Pan, by Robert Kaufman
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Berdan Pan

A Berdan pan was a grinding pan. The circular pan was set at an angle, and as the pan revolved, a heavy iron ball rotated in the lowest point, grinding sand or mineral to a fine powder. It was frequently used to grind impurities out of amalgam (gold in mercury), and to grind batch-lots of heavy mineral.

Parks Victoria

See also

Grinding Pans