Shield mechanics and critical load studies for unsymmetric contact configurations
By: by Thomas M. Barczak.
Series: Report of investigations ;; 9290; Report of investigations (United States. Bureau of Mines) ;; 9290.
Publisher: Bureau of Mines, U.S. Dept. of the Interior
Published: 1990
Place of publication: Washington, D.C
Language: eng
Number of pages: 81
Subjects: Mine roof control -- Testing.; Longwall mining.
Notes: Includes bibliographical references.