Roof-span studies in limestone

Author: Merrill, Robert H.
Year: 1957
Document Type: BMRA
Issuing Agency: U.S. Dept. of the Interior, Bureau of Mines,
SUDOC: I 28.23:5348
Series: Report of investigations / United States Department of the Interior, Bureau of Mines ;
Report Number: 5348
Subjects: Limestone--Testing
Mine roof control
Link: https://hdl.handle.net/2027/mdp.39015078541359

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