Books by Pa Pittsburgh Mining and Safety Research Center. Pittsburgh:
Books in the extended shelves:
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Pittsburgh Mining and Safety Research Center. Pittsburgh, Pa: Methods for evaluating explosives and hazardous materials (U.S. Dept. of the Interior, Bureau of Mines, 1972), also by Charles M. Mason and Elaine G. Aiken (page images at HathiTrust)
Find more by Pa Pittsburgh Mining and Safety Research Center. Pittsburgh at your library, or elsewhere.