Roof bolting in Alabama coal mines and iron-ore mines / by H.C. Young.

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Bibliographic Details
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Main Author: Young, H. C. (Harry C.)
Corporate Author: United States. Bureau of Mines
Format: Government Document Book
Language:English
Published: [Washington, D.C.] : U.S. Dept. of the Interior, Bureau of Mines, [1954]
Series:Information circular (United States. Bureau of Mines) ; 7678.
Subjects: