Metal and nonmetallic mine safety.
Subtitle: Hearings, Eighty-ninth Congress, second session. March 21 and 22, 1966.
Publisher: U.S. Govt. Print. Off.
Published: 1966
Place of publication: Washington
Language: eng
Number of pages: 492
Subjects: Mine safety -- Law and legislation -- United States.
Notes: H.R. 8989, and S. 996, 2972, 3094.