Aldrich, M.(2016). Engineers Attack the “No. One Killer” in Coal Mining: The Bureau of Mines and the Promotion of Roof Bolting, 1947–1969. Technology and Culture, 57(1), 80-118. doi:10.1353/tech.2016.0022
MLA CitationAldrich, Mark. "Engineers Attack the “No. One Killer” in Coal Mining: The Bureau of Mines and the Promotion of Roof Bolting, 1947–1969". Technology and Culture, 57.1 ( 2016 ): 80-118.
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