2007-01-032022-02-032007-01-032022-02-03https://hdl.handle.net/11124/7413I.S.-12; Blast on bench in front of churn drill failed when cap exploded and cut off primacord without detonating it. Longyear Mine, Inter-State Iron Company, Kitzville, Minnesota. - F. G. Anderson - July 1947.Held in the Russell L. and Lyn Wood Mining History Archive, Arthur Lakes Library, Colorado School of Mines.Donor: United States Bureau of Mines.Date scanned: 2002-6-12.Rights management statement available at: http://library.mines.edu/digital/rights.htmlInter-State Iron CompanyBlastingIron mines and miningOpen pit miningStillImage