Effects of time between exposure and support on mine roof stability, Bear Coal Mine, Somerset, Colo. /
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| Format: | Government Document Book |
| Language: | English |
| Published: |
[Pittsburgh, Pa.] :
Dept. of the Interior, Bureau of Mines,
1978.
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| Series: | Report of investigations (United States. Bureau of Mines) ;
8298. |
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| Physical Description: | 13 pages : illustrations ; 26 cm. |
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| Bibliography: | Bibliography: page 13. |