01009cam a22002651  4500001001300000003000400013005001700017008004100034010001700075035001900092040002400111042001200135050001700147100003500164245011600199260002500315300003700340490007400377500013300451500005100584504002500635650001500660650001800675700005000693gs 40000340 DLC20260227111346.0780909s1940    ilua     b   s000 0 eng    ags 40000340   a(OCoLC)4209288  aDLCcUUdOCoLCdDLC  apremarc00aTN948.F6bM31 aMachin, James Stewart,d 1893-10aEffect of fluorspar on silicate melts with special reference to mineral wool,cby J.S. Machin and J.F. Vanecek.  aUrbana, Ill.,c1940.  a15p.bincl.tables,diagrs.c25cm.0 aIllinois.  State geological survey.  Report of investigationsvno. 68  aAt head of title: State of Illinois ... Department of registration and education ... Division of the State geological survey ...  aPrinted by authority of the state of Illinois.  aBibliography: p. 15. 0aFluorspar. 0aMineral wool.1 aVaneck, James Franklin,d1915-ejoint author.