000 01004nam a2200265u 4500
001 01009966
003 PWmBRO
005 20240602102500.0
008 920623s1975 dcua 00000 eng u
010 _a92045020
090 0 _aVF
_b622.06173/S914e
100 1 0 _aStrebig, Kelly C.
245 1 0 _aEffect of depth of cut and bit type on the generation of respirable dust /
_cby Kelly C. Strebig and H. William Zeller.
260 0 _aWashington, D.C. :
_bU.S. Dept. of the Interior,
_c1975.
300 _a[3], 16 p. :
_bill.
490 1 _aReport of investigations / Bureau of Mines, U.S. Department of the Interior ;
_v8042
650 0 _aCoal mines and mining
_xDust control.
650 0 _aBits (Drilling and boring).
650 0 _aCutting machines.
700 1 0 _aZeller, H. William.
710 1 0 _aUnited States Department of the Interior.
_bBureau of Mines.
830 0 _aReport of investigations (U.S. Department of the Interior.
_bBureau of Mines) ;
_v8042
942 _2ddc
994 0 1 _a085592
999 _c60001
_d60001