000 00867n a2200265 4500
001 00951064
003 PWmBRO
005 20180324072203.0
008 910725s1990 dcu b f00010 eng
010 _a 90002409
069 _a 91035196
090 0 0 _aVF
_b622.83/O68s
100 1 0 _aOrganiscak, John A.
245 1 0 _aSources and characteristics of quartz dust in coal mines /
_cby J.A. Organiscak, S.J. Page, and R.A. Jankowski.
260 0 _aWashington, DC :
_bU.S. Dept. of the Interior, Bureau of Mines,
_c1990.
300 _aii, 21 p. :
_bill.
490 1 _aBureau of Mines information circular
650 0 _aQuartz dust.
650 0 _aCoal mines and mining
_xDust control.
700 1 0 _aPage, Steven J.
700 1 0 _aJankowski, Robert A.
830 0 _aInformation ciruclar (United States. Bureau of Mines)
942 _2ddc
994 0 1 _a080713
999 _c62778
_d62778