1. Christopher Coal Co. Final report of mine explosion, no. 3 mine, Christopher Coal Company, Osage, Monongalia County, W. Va., Mav 12, 1942; by M. J. Ankeny, J. W. Pero, A. K. Bloom, R. W. Stahl. Bookmark Corporate/Agency Authors: Mines Bureau and General Land Office Publisher: Mines Bureau Date: [1942.] SuDoc number: I 28.2:C 46