Petersen, Max S.2007-01-032022-02-032007-01-032022-02-03https://hdl.handle.net/11124/5810Date scanned: 2002-5-21.USBM #59519; Cribbed-timber-pillar used for support of heavy ground in main drift near open stope - 7th level. Lloyd Mine, Cleveland-Cliffs Iron Company, Ishpeming, Michigan. (March 1945 - M. S. P).Held in the Russell L. and Lyn Wood Mining History Archive, Arthur Lakes Library, Colorado School of Mines.Donor: United States Bureau of Mines.The Lloyd Mine (Morris Lloyd Mine) was operated by the Cleveland-Cliffs Iron Company. 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.Rights management statement available at: http://library.mines.edu/digital/rights.htmlCleveland-Cliffs Iron CompanyIron mines and miningMine timberingScenes, undergroundUnderground miningStillImage