To amend the Federal coal mine health and safety act of 1969.
Subtitle: Hearings, Ninety-second Congress, first session [on] H.R. 5680 ...
Publisher: U.S. Govt. Print. Off.
Published: 1971
Place of publication: Washington
Language: eng
Number of pages: 341
Subjects: Coal mines and mining -- Safety regulations -- United States.
Notes: Hearings held in Washington, D.C., Mar. 9-11, 1971 and in Hazard, Ky., Mar. 12-13, 1971.