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Evaluation of structures for roof-fall areas / by Richard A. Allwes and C.P. Mangelsdorf
Author
Allwes, Richard A.
Published
Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, [1992]
Physical Description
31 pages : illustrations ; 28 cm.
Additional Creators
Mangelsdorf, C. P.
Full Text available online
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Series
Report of investigations (United States. Bureau of Mines) ; 9414
Report Numbers
I 28.23:9414
Subject(s)
Mine roof control
Metal arches
—
Testing
Bibliography Note
Includes bibliographical references (page 20).
Reproduction Note
Microform. [Washington, D.C.], U.S. G.P.O., 1992. 1 microfiche : negative.
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| catkey: 1886415