Document Ra0gXJOE1w79qqow2kRrYDQzz

a r/jr 'Mi,j i .i l. - ! . I'! Among the common substances known to be a carcinogen is polyvinyl chloride which accounts for about half of all plastics used in the United States. The Occupational Safety and Health Administration (OSHA) proposed safeguards to protect chemical workers after it was established that 19 workers in polyvinyl chloride plants died from angiosarcoma, a rare form of liver cancer, at more than 1000 times the national average. i . inkier * j . . L1. J - Rull Of! A$ . C . ** wo to o tH\no received 4 C C ...Cl 2 1975 dr. a. s. cummin r V "ti, , i +ll t tr, - 1 F u1,, : ' r.J i; F v ! O' - r 'r r. hi - i i'K * .1 i1 1 ''i.. t*1 * Sj _ O' Mr.'i ri f ' . r- r^.'*'t Ih1.U11" i rpn |-` r . ' 1 ' P" v.i'.rk - 1 !l '"'I 1 Shh''i;H't.vs r-i 1 -ik-r J Mini i m vlrdi i r firud in \i J, ^ f 1 r,rf f |i>V* ' - " ;r CH>" ulH'jr Ikvj * " 1 I'* ' ' It L . r * in h vears f' ti ' \ci\w IMS - ' - - ih- i:i si >' l rt nt ' r l. .j fin1' - - it;', pi Trots? 'ft ; t '-.ii i! o cr ftfl*- W i' , ... Sc^tl CIV r i'c it r' . L m w r:tfi Ms V'rotvy hr infrncj ti i if i' h--iis 1 Mv* ort v,r p'nir t* - i.`< A) 1 a* M I'V.* W 'Tr ' ilC ,i ikrs p ir^'nr.n;; * ff i'31! i tn* r hi1 1 n ,s*:rM - Nh'n'fif* r;1 1 -i -r*i' l! .j-*.- -:ir 1 * r N i; `s .t r' I'M .II'1-- 'r i .Mi.S k ! " fir"u' 1 i\ ' . 1 'i rr 1 1 i r. i . l : :;