Strategies for encouraging miners to stay away from unsupported roof and perform self-protective actions /
Shranjeno v:
Glavni avtor: | Peters, Robert H. |
---|---|
Format: | Neznan |
Jezik: | angleščina |
Izdano: |
Pittsburgh, Pa. :
U.S. Dept. of the Interior, Bureau of Mines,
990.
|
Serija: | Information circular (United States. Bureau of Mines) ;
9283. |
Teme: | |
Oznake: |
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