LEADER 01049nam  2200277z- 450 
001 9910693425303321
005 20110416083959.0
035   $a(CKB)5860000000035634
035   $a(EXLCZ)995860000000035634
100   $a20220406c2010uuuu  -u-            -
101 0 $aeng
200 14$aThe Upper Big Branch mine tragedy $efield hearing before the Committee on Education and Labor, U.S. House of Representatives, One Hundred Eleventh Congress, second session, hearing held in Beckley, WV, May 24, 2010
311   $a0-16-087128-X 
517   $aUpper Big Branch mine tragedy 
606   $aCoal mine accidents$zWest Virginia$zRaleigh County
606   $aMine explosions$zWest Virginia$zRaleigh County
606   $aFiredamp$zUnited States$xSafety measures
606   $aMine safety$zUnited States
615  0$aCoal mine accidents
615  0$aMine explosions
615  0$aFiredamp$xSafety measures.
615  0$aMine safety
906   $aBOOK
912   $a9910693425303321
996   $aThe Upper Big Branch mine tragedy$93208495
997   $aUNINA