000 01155pam a2200301 a 4500
999 _c4439
_d4439
001 4828641
003 Biblioteca de INTEMIN
005 20180628123423.0
008 890818s1989 dcua b f000 0 eng
010 _a 89600272
040 _aDLC
_cDLC
_dDLC
050 0 0 _aTN23
_b.U43 no. 9294
_aTN803
082 0 0 _a622 s
_a622/.334
_220
086 0 _aI 28.23:
100 1 _aMainiero, Richard J.
_92386
245 1 0 _aUse of sheathed explosive charges on longwalls /
_cby Richard J. Mainiero and Lon D. Santis.
260 _aWashington, D.C. :
_bU.S. Dept. of the Interior, Bureau of Mines,
_c1989.
300 _a8 p. :
_bill. ;
_c27 cm.
490 1 _aReport of investigations ;
_v9294
504 _aIncludes bibliographical references.
650 0 _aCoal mines and mining
_xExplosives
_xTesting.
_98762
650 0 _aLongwall mining.
_92355
700 1 _aSantis, Lon D.
_98763
740 0 _aSheathed explosive charges on longwalls.
830 0 _aReport of investigations (United States. Bureau of Mines) ;
_v9294.
_9793
906 _a7
_bcbc
_corignew
_d1
_encip
_f19
_gy-gencatlg
942 _2udc
_cCR