000 00759nam a2200217 4500
001 00092894
003 PWmBRO
005 20190304151255.0
008 940905s1993 mdua b f00010 eng
110 2 0 _aUnited States.
_bBureau of Mines.
245 1 0 _aGeological features that contribute to ground control problems in underground coal mines /
_cby Valois R. Shea-Albin.
260 0 _aAvondale, Md. :
_bU.S. Dept. of the Interior, Bureau of Mines,
_c1993.
300 _a38 p.
440 1 _aInformation circular ;
_v9370
650 0 _aMines and mineral resources.
650 0 _aGround control (Mining).
650 0 _aCoal
_xGeology
700 2 0 _aShea-Albin, V. R.
830 0 _aInformation circular (United States. Bureau of Mines) ;
_v9370
942 _2ddc
999 _c87131
_d87131