Roof control strategies for underground coal mines / by William C. Smith.
Material type: TextSeries: Information circular ; 9351Publication details: Avondale, Md. : U.S. Dept. of the Interior, Bureau of Mines, 1993.Description: 17 p. : illSubject(s):Item type | Current library | Collection | Call number | Status | Date due | Barcode | |
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Vertical File | Matheson Library | Vertical Files | 622 U58 (Browse shelf(Opens below)) | 127 | 103439 |
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