Document 3eJwBKnYv0MmzXBqo0MwEZawn

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FILE NAME: Drilling Specialties (DRSP) DATE: 1979 Jan 31 DOC#: DRSP019 DOCUMENT DESCRIPTION: Memo RE Work Practices for Drilling Mud Asbestos 91MVW05 918 661-6153 91(1691-5333 DRILLING SPECIALTIES COMPANY . D Afm 5SVtU JE.K3.ftKO M A 7 .0 0 4 TELEX 4 9 .3 4 5 5 TWX 910 941-3560 - i f ,, -15 January 31 1$79 -DWorirklliPnrgacHtiucd.eAs sfboerstos SM.7-79 M55r2. TFF.BA. BoMnson ' as 00079 i DmarriileliFnlgosSalpecfoiarltoievserC1o5mpyaerearrhsa. s bInee1n97se0,lliwnegfoausnbdestthoastfFibleorsaulnwdeasr tahepottreande- taiaslolfyt, hgazraadrdeo7uscmfiraytesoritaille. fiTbheerp, rothduusctpwroebwabelrye pnroond-uhcaiznagrdwouass. duMsteyd.icaIlt is histories show no evidence that soft ehrysotile fibers are carcinogenic. Iwnou1l9d7h0a,ntdhleereFfloorseail wfiebbeerg. anWae psrtougdriaemd tvoariinoususrme etthheodssaofeftyremofovminegn wthheo fiber farcotmuatlhley csaocnkstarundctpeduttsienvgeriatl isnactkheemdprtiylilnigngmomduedlsi,nroaned"uosft-wfrheiechmwaenrneerp.arWe tdiucsutl-afrrelye wsuasccteossmfuold.ifyIittsbecpahmyesiocbavliofoursmt.hat the way to make Flosal fiber Aa fbteinrdfeorulrisyteeadrsinrestheaercOhSE,Awreegwuelraetiaobnles toon masabreksettbssu.chIat misawtearitearl.. TWheeused esxectrruedtedwapsetlhleetsp.r.opWere wcoemrepraebslsein,gwoifthththeeficboeorpearnadtiosunbosefqJuoehnnt sf-lMakaimngiUoef, to praropdiduclye e&nporuogdhuicnt tahmatudissyestsesmentotiaplrlyevednutstr-efmreoev,albbuyt twhheichshsalteilslhdakisepre. rses wJoehnshs-oMuladnvbielleabaledvtiosewd ruistethwaotrkspinrcaecttihceespfroodrutchteisuseesosfe.nthtiealmlyadteursiat-lfrwehei,ch cceomuledntthfeibnebre. aWcceefpotleldowbeydOcSHloAs.elyThtihsehfaosrmbeeonf tdhoeneaisnbetshteosccaesme eonft pasipbeestos wProarkctpicreasctFicoersT(haettOasceheodf)DinrilplirnegpaMriundgGtrhaedeaAttasbcehsetdosro(DugMhA)d. raft of Work We would appreciate your comments on these work practices. 4 n / ? S '- ` FJSstlb - BC Attachments cc C7.. AE.. WGaeendtez (1 att"ach) HD.. WA.. BTryolwenr "" WR.. MJ.. BDrioxwonn, " R. P. Zelenski " F. J. Shell 17iV t DRILLING MUD ADDITIVES AND CEMENT SYSTEM S PLAINTIFF'S EXHIBIT DMA-1633