How to prevent death and injury from falls of roof in coal mines / by J. W. Paul.
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| Format: | Government Document Book |
| Language: | English |
| Published: |
Washington, D.C. :
U.S. Dept. of Commerce, Bureau of Mines,
1932.
|
| Series: | Information circular (United States. Bureau of Mines) ;
6570. |
| Subjects: |
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How to prevent death and injury from falls of roof in coal mines
Published 1932
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How to prevent death and injury from falls of roof in coal mines.
Published 1932
Full Text (via ProQuest)
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