LEADER 01358nam  2200373Ka 450 
001 9910696834003321
005 20080728091756.0
035   $a(CKB)5470000002382544
035   $a(OCoLC)236164656
035   $a(EXLCZ)995470000002382544
100   $a20080728d1974      ua             0
101 0 $aeng
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aUsing sulfur hexafluoride as a gaseous tracer to study ventilation systems in mines$b[electronic resource] /$fE.D. Thimons, R.J. Bielicki, and F.N. Kissell
210  1$a[Pittsburgh, Pa.?] :$cU.S. Dept. of the Interior, Bureau of Mines,$d[1974]
215   $a22 pages $cdigital, PDF file
225 1 $aReport of investigations ;$v7916
300   $aTitle from title screen (viewed on July 28, 2008).
606   $aSulfur hexafluoride as a test gas
606   $aMine ventilation
615  0$aSulfur hexafluoride as a test gas.
615  0$aMine ventilation.
700   $aThimons$b Edward D$01391026
701   $aBielicki$b Richard J$01391949
701   $aKissell$b Fred N$01351621
712 02$aUnited States.$bBureau of Mines.
801  0$bGPO
801  1$bGPO
906   $aBOOK
912   $a9910696834003321
996   $aUsing sulfur hexafluoride as a gaseous tracer to study ventilation systems in mines$93546287
997   $aUNINA