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dc.date1930?-1950?
dc.date.accessioned2007-01-03T05:58:13Z
dc.date.accessioned2022-02-03T09:27:18Z
dc.date.available2007-01-03T05:58:13Z
dc.date.available2022-02-03T09:27:18Z
dc.identifierlibimagesU083
dc.identifier.urihttp://hdl.handle.net/11124/7924
dc.descriptionCliffs Shaft. Block signal system, lights, cables, and relay switches. #43696.
dc.descriptionDate scanned: 2001-09-21.
dc.descriptionIdentifier: U083.
dc.descriptionMounted on sheet of paper; text on paper.
dc.descriptionRelated photographs: U076, U077, U079, U080, U081, U0082, U084, U086.
dc.descriptionHeld in the Russell L. and Lyn Wood Mining History Archive, Arthur Lakes Library, Colorado School of Mines.
dc.description.abstractThe Cliffs Shaft Mine in Ishpeming in the Marquette Range was the largest producer of hard specular hematite in the US. The Cliffs Shaft Mine (New Barnum Mine) was opened by the Iron Cliffs Company in 1881 and operated by the Cleveland-Cliffs Iron Company starting in 1891. The Mine was one of Michigan's largest iron mines and operated almost continuously until its closure in 1967. Cleveland-Cliffs Iron Company was formed with the merger of two major iron mining companies on Michigan's Marquette Range in 1891. The Company had a number of mines operating in the Upper Peninsula by the outbreak of World War I. By the 1940s the high grade iron ores mined underground were becoming depleted. The Company developed a process to concentrate low grade ores into iron ore pellets in the 1950s, and C.C.I.C.'s last underground iron mine closed in 1979.
dc.description.sponsorshipSponsored by the Colorado State Library, the regional library systems of Colorado, and the Institute of Museum and Library Services.
dc.publisherColorado School of Mines. Arthur Lakes Library
dc.rightsRights management statement available at: http://library.mines.edu/digital/rights.html
dc.subjectCleveland-Cliffs Iron Company
dc.subjectIron mines and mining
dc.subjectMining
dc.subjectScenes, underground
dc.subjectUnderground mining
dc.titleBlock signal system at Cliffs Shaft
dc.typeStillImage
dc.contributor.institutionArthur Lakes Library
dc.contributor.institutionColorado Digitization Project
dc.contributor.institutionRussell L. and Lyn Wood Mining History Archive


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