000 01066pam a2200277 a 4500
999 _c4514
_d4514
001 3310633
003 Biblioteca de INTEMIN
005 20180710135801.0
008 830922s1984 mdua b f000 0 eng
010 _a 83600306
040 _aDLC
_cDLC
_dDLC
050 0 0 _aTN23
_b.U43 no. 8844
_aTN297
082 0 0 _a622 s
_a622/.8
_219
086 0 _aI 28.23:8844
245 0 2 _aA Short-range locator system for detecting trapped miners /
_cby William E. Webb ... [et al.].
260 _a[Avondale, Md.] :
_bU.S. Dept. of the Interior, Bureau of Mines,
_c1984.
300 _aii, 22 p. :
_bill. ;
_c28 cm.
490 1 _aReport of investigations ;
_v8844
504 _aBibliography: p. 18-22.
650 0 _aMine rescue work
_xEquipment and supplies.
_93144
650 0 _aRadio
_xTransmitters and transmission.
_98875
650 0 _aMine communication systems.
_98757
700 1 _aWebb, William E.
_93586
830 0 _aReport of investigations (United States. Bureau of Mines) ;
_v8844.
_9793
906 _a7
_bcbc
_corignew
_d1
_encip
_f19
_gy-gencatlg
942 _2udc
_cCR