Underground construction
Subtitle: (tunneling)
Edition: Rev. 1991.
Publisher: U.S. Department of Labor, Occupational Safety and Health Administration
Published: 1991
Place of publication: [Washington, D.C.?]
Language: eng
Subjects: Tunneling; Safety measures; Underground construction
Notes: Shipping list no.: 92-052-P.

"OSHA 3115."

Includes bibliographical references.