TY - BOOK ID - 134849123 TI - 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. PY - 2013 PB - Washington : U.S. Government Printing Office, DB - UniCat KW - Upper Big Branch Mine Disaster, W. Va., 2010. KW - Coal mine accidents KW - Mine explosions KW - Coal mines and mining KW - Mine safety KW - Safety regulations KW - Government policy KW - Prevention. KW - United States. KW - Rules and practice. UR - https://www.unicat.be/uniCat?func=search&query=sysid:134849123 AB - ER -