Document EqOJ68Dy5w6dnrD8JkwmgbX8n

FILE NAME: RT Vanderbilt (RTV) DATE: 1971 July 21 DOC#: RTV 146 DOCUMENT DESCRIPTION: Letter to Desert Minerals from American Conference of Govt Industrial Hygienists RE TLV of Talc with Notes Hum i* tam w iw w f f i ir t. . t * <# . A t * CtofrSWft tt+itrt# fnnn*to btt *V*Ai 4*Tjrf tfin*<4Mfk><\vntt#fo4><.lM"*&, &* HJ$3 A{<ti(^(i i m 1 v *m Ch*rfm .(.-iw!P.tl,t(.(t.'.1ll i i<r irt-v- >**K* Ur t.* \ t*u rft>w *MH* <1 M* HHMilMUl.AfaJl*tO**.HJNffitt(dV) ^'MhWWrt Out* 1v J./rtW*nt faf** . t>* 6* U*h A*ou. W^lt Pfa*riiM*M7<** XM Cart**fc 2*04 r? : a <>s f c AMERICAN CONFgRHNCS . of GOVSRWMENTAl INDUSTRIAL HYOISNISTS M**4*Eild*l A/; ******#*TiLw%iSS<k#-0*m**> Ul*4i*4H*&#f U. * * * * ! * * t o * WI4 0*^; d*(**>?**** INfl M/tv**^*<4 titnAiI0* N `XiMl . J/rMftri >? i#rtji i*b w< frrfttH'** 5. Ox9 Wj &<* ttw'4M <* AItWto8dW,0fttfiA9w)t7M^1 VtfiHOH i. 04, **wy ?< Hifwi'w* k* 0 Ki*tiv <*7iiWiA/eo lO*ia*}tu!><u*n6>t1j*tAMt^Ou1J*7Hn*H?i Jci-ijIWtUalMfcktf'll** lfH& *il**r*ti*S.p44w?J/ July 21, 1971 1/ $. ftA* inv* f. 0 .%<** } i v Ofw; 7* tlJ W K i l *W0(-, HFB i SRMt Mr* Thomas'B. Rammers " Vice President *Sales Desert Minerals, lac. . American Mineral Company 1891 South Coast Highway Laguna Beach, California 92651 JUL 2 0 1371 '.. n:2T j | u N j T " "" 1 VLN j 1 '. Dear Hr* Hammers} : Tour letter directed to the Secretary-Treasurer of the ACGXH has been referred to the undersigned for reply* The threshold ''indt value of 20 rappcf for TALC has been retained in the forthcoming 1971 TLV List, if the`talc is non-asbestlformp however, if the talc is of the fibrous-tremolite type, then a more stringent TLV of 5 fibers/ml > 5 p'< in length is the standard, as.noted in the accom panying documentation for fibrous"talc. Sineerely yours, Enclosure jflS Herbert E. Stokinger, Chairman, TLV Committee' ^7 h/m-^ y m (l^^ fa' // ^ It rt "r/`''Aa * *1TM* CRMC-HT-TAI.C-000108 7 -'U4^. Of .. ii 7 ^ Mi l|/.f./..S -*&>-'c;yOij/.T0 < 7 `0(t;;. *tj /@./... / 2 c-f--~<*-< -<(f ^ / r > ^ L > ' ... i,,f, >tf (pJ-c.. O-c'.J'........... ____________ (Oty..-P '-&#-- - sf/z -.... 7 "CP' & -w~<*!. c- -y ; _,;; - ^ - : . _ _ . - , . ^ - . . . . 3/... / X? ..y>.s-- ^ N.r_ . *t,,#rz. r^L,,---- - -.,..yO\+A?