000 01062nam a2200301u 4500
001 00959081
003 PWmBRO
005 20240602102416.0
008 920113s1991 dcu b f00010 eng
010 _a 90049808
069 _a 92015022
090 0 _aVF
_b622.3/34/S539e
100 2 0 _aShea-Albin, V. R.
245 1 0 _aElastic wave velocity and attenuation as used to define phases of loading and failure in coal /
_cby V.R. Shea-Albin, D.R. Hanson, R.E. Gerlick.
260 0 _aWashington, D.C. :
_bU.S. Dept. of the Interior, Bureau of Mines,
_c1991.
300 _aii, 43 p. :
_bill.
490 1 _aReport of investigations ;
_v9355
650 0 _aGround control (Mining)
650 0 _aCoal
_xTesting.
650 0 _aFracture mechanics.
700 1 0 _aHanson, David R.
700 1 0 _aGerlick, R. E.
710 2 0 _aUnited States.
_bBureau of Mines.
810 2 0 _aUnited States.
_bBureau of Mines.
_tReport of investigations ;
_v9355
830 0 _aReport of investigations (United States. Bureau of Mines) ;
_v9355
942 _2ddc
994 0 1 _a083718
999 _c58730
_d58730