Petersen, Max S.2007-01-032022-02-032007-01-032022-02-03https://hdl.handle.net/11124/6201Date scanned: 2002-6-19.USBM #64056; Timbering -- nailing angle iron to post for support of staging planks. 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.Two miners work on timbering underground at the Armour #1 Mine. 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 timberingMinersScenes, undergroundUnderground miningStillImage