Cut ter roof failure
Subtitle: an overview of the causes and methods for control
By: by John L. Hill III.
Series: Information circular / United States Department of the Interior, Bureau of Mines;; 9094; Information circular (United States. Bureau of Mines) ;; 9094.
Publisher: U.S. Dept. of the Interior, Bureau of Mines
Published: 1986
Place of publication: Avondale, Md
Language: eng
Number of pages: 27
Subjects: Mine roof control.; Rock deformation.
Notes: Bibliography: p.26-27.