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1
Fires and fire prevention in Lake Superior mines /
Published 1928Subjects: Search for the full-text version of this title in HathiTrust
Government Document Book -
2
Storage of explosives in underground mines of the Lake Superior District /
Published 1946Subjects: “…Explosives. http://id.loc.gov/authorities/subjects/sh85046474.…”
Search for the full-text version of this title in HathiTrust
Government Document Book