000 00926nam a2200241u 4500
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010 _a90053097
090 _aVF
_b622.8/S271t
100 1 0 _aSawyer, Stephen G.
245 1 2 _aA testing procedure for the certification of underground protective cabs and canopies /
_cby Stephen G. Sawyer and Darryl K. Brogan.
260 0 0 _a[Washington]
_bU.S. Dept. of the Interior, Mining Enforcement and Safety Administration,
_c1974.
300 _c15 p. :
_bill.
490 1 _aInformational report - MESA,
_x0097-9376 ;
_v1002
650 0 _aMine safety.
700 1 0 _aBrogan, Darryl K.
710 1 0 _aUnited States.
_bMining Enforcement and Safety Administration.
830 0 _aInformational report (United States. Mining Enforcement and Safety Administration),
_x0097-9376 ;
_v1002.
942 _2ddc
994 0 1 _a066504
999 _c46594
_d46594