Roof control strategies for underground coal mines
By: by William C. Smith.
Series: Information circular ;; 9351; Information circular (United States. Bureau of Mines) ;; 9351.
Publisher: U.S. Dept. of the Interior, Bureau of Mines
Published: 1993
Place of publication: Washington, D.C
Language: eng
Number of pages: 17
Subjects: Mine roof bolting.; Mine roof control.; Coal mines and mining.
Notes: Includes bibliographical references (p.16-17).