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1Subjects: “...Mine explosions Safety measures....”
Government Document Book -
2
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3by Thimons, Edward D.Subjects: “...Mine safety....”
Published 1979
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Government Document Book -
4Published 1974Subjects: “...Coal mines and mining Safety measures....”
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Government Document Book -
5by Maksimovic, S. D.Subjects: “...Coal mines and mining Safety measures....”
Published 1980
Government Document Book -
6by Vinson, Robert P.Subjects: “...Coal mines and mining Safety measures....”
Published 1978
Government Document Book -
7by Timko, Robert J.Subjects: “...Coal mines and mining Safety measures....”
Published 1986
Government Document Book