Ball mill and classifier at Captain Jack Mill
| dc.date | 1981? | |
| dc.date.accessioned | 2007-01-03T05:57:03Z | |
| dc.date.accessioned | 2022-02-03T09:22:38Z | |
| dc.date.available | 2007-01-03T05:57:03Z | |
| dc.date.available | 2022-02-03T09:22:38Z | |
| dc.identifier | libimagesNMHFM665 | |
| dc.identifier.uri | http://hdl.handle.net/11124/10477 | |
| dc.description | Ball mill & classifier. Capt. Jack Mill, Ward, Colo. Nov. 21, 1981. | |
| dc.description | Date scanned: 2001-09-12. | |
| dc.description | Identifier: NMHFM-665. | |
| dc.description | Related photographs: NMHFM-650, NMHFM-651, NMHFM-652, MHFM-653, NMHFM-661, NMHFM-663, NMHFM-664, NMHFM-666. | |
| dc.description | Unmounted; text on verso. | |
| dc.description | Held in the National Mining Hall of Fame and Museum. | |
| dc.description.abstract | This equipment is on the site a mill operated by the Big Five Mining Company in the early 1890s to process ores from the mines near Lefthand Creek. The area of Lefthand Creek in the Ward district, Boulder County, Colorado, was one of the region's richest gold and silver producers by 1870. The Black Jack (Captain Jack) Mine in this area was operated intermittently starting in 1917. The company Captain Jack, Ltd. acquired possession of the mill works area for a local mill operation in 1974. Contamination from the Captain Jack and nearby mine and mill areas was found to threaten drinking water supplies in the late 1990s. The area around the Big Five Mine tunnel, mill, and Captain Jack Mine was designated as a Superfund hazardous waste site in 2003. | |
| dc.description.sponsorship | Sponsored by the Colorado State Library, the regional library systems of Colorado, and the Institute of Museum and Library Services. | |
| dc.publisher | Colorado School of Mines. Arthur Lakes Library | |
| dc.rights | Rights management statement available at: http://library.mines.edu/digital/rights.html | |
| dc.subject | Mineral processing | |
| dc.subject | Ore processing plants | |
| dc.title | Ball mill and classifier at Captain Jack Mill | |
| dc.type | StillImage | |
| dc.contributor.institution | Colorado Digitization Project | |
| dc.contributor.institution | National Mining Hall of Fame and Museum |
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