Strategies for encouraging miners to stay away from unsupported roof and perform self-protective actions /
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| Hovedforfatter: | |
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| Format: | Ukendt |
| Sprog: | engelsk |
| Udgivet: |
Pittsburgh, Pa. :
U.S. Dept. of the Interior, Bureau of Mines,
990.
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| Serier: | Information circular (United States. Bureau of Mines) ;
9283. |
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Matheson Library
| Klassifikationsnummer: |
VF 622.8 P483
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|---|---|
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