File:Grabill - Clean Up day at the Deadwood Terra Gold Stamp Mill.jpg
From Infogalactic: the planetary knowledge core
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Summary
| Description |
Interior of the Deadwood Terra Gold Stamp mill. Crushed ore is washed over mercury coated copper sheets, whence fine gold particles form an almagam with the mercury. The amalgam was scraped off and the gold then separated from the amalgam by heating and evaporating the mercury which was then recovered by a condenser for reapplication to the plates |
|---|---|
| Source |
John C. H. Grabill Collection, Library of Congress, Reproduction number: LC-DIG-ppmsc-02615 Lua error in package.lua at line 80: module 'strict' not found. |
| Date |
1888 |
| Author | |
| Permission (Reusing this file) |
See below. |
Licensing
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 13:45, 12 March 2018 | Error creating thumbnail: File missing | 5,113 × 4,075 (2.37 MB) | Potbellied (talk | contribs) |
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