Geologic conditions affecting coal mine ground control in the western United States
By: by Gary P. Sames and Robert B. Laird.
Contributors: Laird, Robert B.
Series: Information circular ;; 9172; Information circular (United States. Bureau of Mines) ;; 9172.
Publisher: U.S. Dept. of the Interior, Bureau of Mines
Published: 1988
Place of publication: Pittsburgh, Pa
Language: eng
Number of pages: 30
Subjects: Ground control (Mining); Coal -- Geology -- West (U.S.)
Notes: Bibliography: p. 29-30.