File:YogoSapphireExtraction.jpg
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YogoSapphireExtraction.jpg (550 × 270 pixels, file size: 37 KB, MIME type: image/jpeg)
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DescriptionYogoSapphireExtraction.jpg | Extracting sapphires at the English Mine was similar to placer gold recovery. In this photograph, miners clean a sluice box. The fence-like contraption behind the men, or "metal riffles," has been removed from the bottom of the sluice boxes. The riffles act as a trap to capture the heavy sapphires during the "washing" process. At Yogo mines, Yogo Gulch, Montana, USA | |||
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between 1895 and 1922 date QS:P,+1500-00-00T00:00:00Z/6,P1319,+1895-00-00T00:00:00Z/9,P1326,+1922-00-00T00:00:00Z/9 |
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Source | Big Sky Journal | |||
Author | Unknown authorUnknown author | |||
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current | 00:18, 25 October 2011 | ![]() | 550 × 270 (37 KB) | PumpkinSky (talk | contribs) | {{Information |Description= Extracting sapphires at the English Mine was similar to placer gold recovery. In this photograph, miners clean a sluice box. The fence-like contraption behind the men, or "metal riffles," has been removed from the bottom of the |
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