Investigation of mine explosion at Centralia, Ill. : hearings before a special subcommittee of the Committee on Public Lands, United States Senate, Eightieth Congress, first session, pursuant to S. Res. 98, a resolution to investigate the explosion at Centralia Coal Mine No. 5, Wamac, Ill., on March 25, 1947. Apr. 3, 4, 5, 10 16, and 17, 1947