Evaluation of structures for roof-fall areas
By: by Richard A. Allwes and C.P. Mangelsdorf.
Contributors: Mangelsdorf, C. P.
Series: Report of investigations ;; 9414; Report of investigations (United States. Bureau of Mines) ;; 9414.
Publisher: U.S. Dept. of the Interior, Bureau of Mines
Published: 1992
Place of publication: Washington, D.C
Language: eng
Number of pages: 31
Subjects: Mine roof control.; Metal arches -- Testing.
Notes: Includes bibliographical references (p. 20).