Coal mine health and safety.
Subtitle: Hearings, Ninety-first Congress, first session.
Publisher: U.S. Govt. Print. Off.
Published: 1969
Place of publication: Washington
Language: eng
Number of pages: 658
Subjects: Coal mines and mining -- Safety regulations -- United States.
Notes: Hearings held Mar. 4-May 1, 1969, on H.R. 4047, 4295, and 7976.