In the gold extraction process finely crushed ores are leached in vats with a very diluted solution of KCN and NaCN and allowed to remain for 12 to 24

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In the gold extraction process finely crushed ores are leached in vats with a very diluted solution of KCN and NaCN and allowed to remain for 12 to 24 hours to dissolve the gold vintage line drawing or engraving illustration.

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Size: 5000px × 4979px
Photo credit: © Patrick Guenette / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: acid, art, black, carbon, compounds, drawing, elements, engraved, engraving, extraction, gold, illustration, line, machine, machinery, machines, mechanize, mill, milling, miner, mining, nitrogen, purify, stamp, vector, vectors, vintage, white