Description: Report documenting mining explosives, equipment, and breathing apparatuses approved by the United States Bureau of Mines prior to January 1, 1924.
Creator: Crawshaw, John Edward, 1880-; Ilsley, L. C., 1880-; Parker, Dorsey J. & Fieldner, Arno Carl, 1881-1966
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department