Roof bolting in Alabama coal mines and iron-ore mines

Author: Young, H. C.
Year: 1954
Document Type: USBI
Issuing Agency: U.S. Dept. of the Interior, Bureau of Mines,
SUDOC: I 28.27:7678
Series: Information circular / United States Department of the Interior, Bureau of Mines ;
Report Number: 7678
Subjects: Mine roof bolting
Iron mines and mining--Alabama--Safety measures
Coal mines and mining--Alabama--Safety measures
Link: https://hdl.handle.net/2027/mdp.39015078460253

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