Petersen, Max S.2007-01-032022-02-032007-01-032022-02-03https://hdl.handle.net/11124/7506Date scanned: 2002-6-19.USBM #64059; Block -- specially designed for use in hoisting caps into place. It is 3-inches in diameter and requires a minimum amount of vertical room. Usually attached to "cover-pole". Armour #1 Mine, Inland Steel Company, Ironton, Minnesota. - M. S. Petersen - August 1946.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 Armour #1 Mine, an underground iron mine near Crosby, Minnesota was operated by the Inland Steel Company.Rights management statement available at: http://library.mines.edu/digital/rights.htmlInland Steel CompanyIron mines and miningMine timberingScenes, undergroundUnderground miningStillImage