Recognizing signs of excessive loading in underground coal mines
By: by Eric R. Bauer.
Series: Information circular / United States Department of the Interior, Bureau of Mines ;; 9017; Information circular (United States. Bureau of Mines) ;; 9017.
Publisher: U.S. Dept. of the Interior, Bureau of Mines
Published: 1985
Place of publication: Pittsburgh, Pa
Language: eng
Number of pages: 30
Subjects: Mine roof control.
Notes: Bibliography: p. 29.
Includes index.