Document bBXjYrxGyQ9DOnrZbxbJeJkqO

FILE NAME: Union Carbide (UC) DATE: 0000 DOC#: UC039 DOCUMENT DESCRIPTION: UC Internal Report - Asbestos Toxicology Report The sticky note shown below was written by Barry Castleman and attached to the page immediately following this one along the right margin at the spot marked on the next page with an X Xt has been known for years that iou paraoaa working in aabastoa production war prona to develop a disabling lung disease. In tins, this condition became known as asbastosls and was ralatad to exposure to h*g* : concentrations of asbastos dust. Vlth further experience, it was found that nan could work with asbastos without development of lung disease If dust concentrations war kept balow a certain level. Xt has been generally accepted that a worker will not develop asbestosla if be Is exposed to no more than 5 million particles per cubic foot of air even If this exposure con tinues for his entire working lifetime. Although no cases of asbastosls are known to have.oceurred.wbsn exposures'.have been maintained at or below this level the AOQXH (which sets indicated they intend to lower the Wf for asbestos to 2 million particles per cubic foot la an effort to increase the safety factor incorporated in the limit. fhs U. 8. Department of labor has already issued a regulation under the Malsh-leelyi Act placing the TUT for asbestos at 2 million particles per cubic foot for public contracts in which they have jurisdiction. This concentration of dust Is generally not visible in the average work area unless a 100056.D HIMA 27377 r<J t C" `lat * l7ndU1 "** u n-uir " " io n .t * 8-10 f t j u , f t , W " * * f00t <**> >* I ,. u ,u m . ^ tVtrt*# luting condition. Stvr4l r u n go. it u reported tht tfctro wu n ^ r" " 10 " - ft, M p.sUlir " * 1U0*' " " * * With ,,ft.tftU. ft,. ft, >v. ft , ,, * . ,, o f t , Mmmo ,, loM ttiuUi * * .- t . M ft.to . * . , , ,, , elloieu " * " 7 f t .t U t M t U . tftt tftM " *** fto . ft . ,, c u t i f t myoma** .i f t i r u f t t i . xcoodlng tho Thrcthold U nit Vtluo. * tjrp of m m , oft, ,,,,tftiu ft, ft M M 4 w 0 o u t f t ,, f t . . ft r w i ^ ta*or*# '* n * " * * f " 1 art to ftto . m r u m itn d ftl. f t hutorlo, of 001, g u m P O ftft., f t , tftt ,, f t ,, * , to fort, m ,, U r . j f t u ooaMftnU. rite, tftt ofooftollto u ooot fM fta tl* utooutoo f t M to tftlle ,, f . tft ftft o r n iftl. it tftt ft. * ft 5 * * , u ftt ft. ft ft *Ma MMftUft, K it u at. poftiki, tftt : m o U not, oltftr. i m m h on ft. protl oootlouo,. Coetrol of u f t n o . Ouot myoma* u tftn fo r* o*o**u t t . i oootrol f t t f t ^ M* 1 " 100957.0 HNA 27378 ta? tho Metan o t u ,- ^ .. A procru Z^""- " 1* r ' " Z "" " fc*`t#* U ^ ^ ^ ^ * J * S" " " flalrtla* Mitai ut T T "" 0" *""" * -- < * * IntcrrUi, . a. ltYol hu boon ootobliohod u utiifif _ . " " M tho froquoncT **y kl tttondod to ^ftfuitonii ' __ * U H . tosto to uovo oontinuotlon of 4 44tlofiotory condition. tr * ^ o ^ m t Ad wlodi m w m . dWHU,. > * , ,, ,, ,, rf , I " rl oditi ^ u I " * nth " * " **. - ta, ^ fl fMttltlui ifo work with oobootoo. 1 xt U b U ,, tat th. ddltioc Of u^to. ^ d PPOMd U M . durlAd th* j***, "0ttld * " 111" * A. MAWMT, Totti dUtll Muid lOOiSC.D _ -4- COQCUWMrbf*a*"* l l l a .-- * * 1 . .c cpptvMMi!t. t,,o t*h#. th. ,b,to. coactatr.tlo o , to pprotch tu. b o li Liait vau. *WMh tb. 10 I - lo o . t t t ibootoo Mt la e ... or th* ltaW VCu* `o Pbtmtuuy TM * "* : r M-- -- i-- ,jnu otbor mot. count.TM la ladutty. u u ,,M U , ltb ppaoprUt. pMMutloo.. ^ ,00^.i HNA 27380