A tragic anniversary : improving safety at dangerous mines one year after Upper Big Branch : hearing of the Committee on Health, Education, Labor, and Pensions, United States Senate, One Hundred Twelfth Congress, first session ... March 31, 2011.
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| Corporate Author: | |
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| Format: | Government Document Book |
| Language: | English |
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Washington :
U.S. Government Printing Office,
2013.
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| Series: | S. hrg. ;
112-782 |
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| Item Description: | Shipping list no.: 2013-0293-P. |
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| Physical Description: | iii, 45 pages ; 24 cm. |