Refining Gold
by Science Photo Library
Title
Refining Gold
Artist
Science Photo Library
Medium
Photograph - Photograph
Description
Refining gold: furnaces, 2,2, and operator, 9. The man near 4 is gradually heating a crucible surrounded by a ring of burning coals: to increase the heat coals were be raked into a smaller circle. From 1683 English edition of Lazarus Ercker Beschreibung allerfurnemisten mineralischen Ertzt- und Berckwercksarten originally published in Prague in 1574. Copperplate engraving.
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July 25th, 2016
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