Geological features that contribute to ground control problems in underground coal mines
By: by Valois R. Shea-Albin.
Series: Information circular ;; 9370; Information circular (United States. Bureau of Mines) ;; 9370.
Publisher: U.S. Dept. of the Interior, Bureau of Mines
Published: 1993
Place of publication: Washington, DC
Language: eng
Number of pages: 38
Subjects: Ground control (Mining); Coal -- Geology.
Notes: Includes bibliographical references (p. 32-34).