MSHA Oversight Hearings on Coal Mine Explosions During December 1981 and January 1982: Hearings Before the Subcommittee on Health and Safety of the Committee on Education and Labor, House of Representatives, Ninety-seventh Congress, Second Session, Hearings Held in Washington, D.C., on February 23; March 2, 9, 16, 23; and May 4, 1982
United States. Congress. House. Committee on Education and Labor. Subcommittee on Health and Safety
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