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FILE NAME: Union Carbide (UC) DATE: 1969 May 9 DOC#: UC210 DOCUMENT DESCRIPTION: Internal Report - Calidria Asbestos - Asbestos Toxicology Report with Cover Letter to Stedfast Rubber Co. Hay 9, 1969 Mr. X. Frank Tobin Plant Manager Sbedfast Rubber Co., Inc. SO Oliver s tre e t North Easton, Maas. 02356 Deer Mr. Tobin: The enclosed "Asbestos Toxicology Report" explains sone of the facts concerning handling of asbestos. Our CALIDRIA Resin-Crade 144 Asbestos is nearly pure chrysotile asbestos. A differen t type, known as cro eld o llte, is believed by aany a u th o rities to be implicated in ****Inc nesothallona and lung cancer. Our asbestos products do not contain cro eld o llte, which is a product of South Africa. A connection between chrysotile asbestos and mesothelioma or lung cancer has not been cle arly determined. The Federal Government recently promulgated new occupational health standards under the Walsh-Healey Act, applying to noise, dust, gases, e tc . The new Were publi` hed ** the Federal Register, Vol. 34, No. 12, Jan. 17, 1969* They epply to firms doing business v ith the Federal Govermcnt, and i f your company s e lls d ire c tly to a Federal Agency, i t may be well to re fe r to them. We require that-^all employees exposed to asbestos dust in excess of the thresh old lim it value wear a resp irato r with a U.S.B.M.-approved f i l t e r for pneumoco niosis-producing dusts. The p a rtic u la r resp irato r we use is a Willson Honooask, Style No. 60GA, D.S.B.M. approval No. 2170. I hope th is w ill answer your questions s a tis fa c to r ily . i f you wish any more information. Tours very truly, Please le t me know J. A. Riddle Plant Manager JAR/clg end:  UWE! j . T T i t e l TM*0l3C0VtHr COMPANY CJXlIi ASBESTOS TOXICOLOfiV RFPncr PLAINTIFFS U EXHIBIT Union Carbide 137 p ro d u c tio n w ere p r o n t o d e v e lo p " d i s a b l f 16 T***" ? " w orkin* i n **be*to c o n d itio n became k n n ! ^ L ^ ! ^ ^ ^ " * t h i s c o n c en tratio n o f abetoa d u e t. W ith fu re h r<Ut4<1 t0 *Pure to hig h men co u ld work w ith a s b e a to e w ithout- a f th * r e *P*i*<K:e, i t was found t h a t c a c . c r . t l . . ,, " h C ." * l ""` d`" *" " If he * " 7 'r " 1U "I? . . l . c . . l . " l c " TM ) " ,, " h ^ O " V 1; .l b . . t o . to . n i l ,, ' i ; ' . ' ! " " `c h r n c " "lta lc they Intend to l e e r the TLV fo r s : r : n d. u i r * `ls r r they have j u r i e d i c t i o n ^ T h i a 'e o 1* * CUbl* f 0 t f r p u b lic c o n t r a c t s in w hich in the aveiage work a , dUSt ia S * " - 11* n o t v i s i b l e present U .u!llv i h ! T T b* " * f U *h t cau* in 8 * T y n d a ll e f f e c t i . per cubic fo o t fMPPcn b lf c o n c e n tra tio n must be from 8-10 m illio n p a r tic le s c o n d itio n s. 0 t * * * * > h * '0" U l Pr4MnC* ia average l i f t i n g in cid en L ev: r i . L e:rr : u : 8: j ; . v a : . Pr: cpt i i ei J waa * n in c re M e in che exposed to V i t o * Tult U t l L l C*!?cerB o ccu " 1" i n d i v id u a l, i a b e lie v e d by m ost a u t h o r i t i e a ht h i r Vphn 0 t developed c l i n l c * L a s b e s t o s i s . I t e rp o .u r.e .lg n lf lc .n tly .,, c e d in g the i '. " . " ' 0' " " " w ith nebei c dee c l c t c exposures an J'e ^ i " , th ' U o " hM b* ' n ^ b. l ! ? ' ' ! 1' ? ! " ; I h e * ' <*Ue e th e r ,. l,, t in d iv id u a l, w ith h is to rie s of only slig h t -ma:y :n ot be l.owc v i ? H? ! ; rC a vEa ila; b/le* i t a p p e a r, t h a t the TLV o f 5 MPPCF continue. p ro te c t a g a in st m esotheliom a. Research on the problem UNION CARBID E CORPORATION CHEM ICALS ANO PLASTICS * 270 PARK AVENIIF N v m v m n i7 - 2- f j C ontro^ of b e s to s du at exposure la th e re fo re necessary. The c o n tro l T h ! T ! J r! th ? , t *nd? rd onea ap p lic a b le to a v a rie ty of dusty o p e ra tio n s. ^clud* cloaed flow system s, wet p ro cesses where p o ssib le , and adequate ^ . ? e n t i l * t i 0n Wh* re Pe n ln 8 in th e system a re n e c e ssa ry . P e l l e t i z i n g la sometimes used to improve the handling c h a r a c te r is tic s of otherw ise duaty v . f . J Where a* t i s a c t o r y containm ent to s ta y w ith in the T h resh o ld L im it ,, v? i" Pr *c t t c *1 o r im possible, e f f i c i e n t and r e lia b le re s p ira to rs are m onitoring i* the ePl ye e - A program of environm ental m onitoring is highly d e sira b le to determ ine th a t Threshold Lim it Values are n o t being exceeded, i n m an u factu rin g i n d u s t r i e s i t would be d e s ira b le to Know th e d u s t c o n c e n tra tio n s where th e a s b e s to s i s dumped from bags in to Co" c e n c r* t i o w hauld a ls o be d eterm in ed where d u s tin g occurs f L o i r i r i"? Pt i u c t" - W11* i n i t i a l d eterm in ation s should be made a t freou!nL leV* 1 hM b*en *c*bl l h*d as s a t i s f a c t o r y , th e ss aa triisaffa.c tror y ycbo*n d*ixtiJo*nnd. * d t0 o c c a s io n a l t e s c s to a s s u re c o n tin u a tio n of a ??d p erlo d ic P hysical exam ination of workers are no nhe.r** I ! " !* *hould in c lu d e c h e a t X -ray s to in su re t h a t the w orker has no c h e s t c o n d itio n p r i o r to work w ith a s b e s to s and to d eterm ine t h a t no lung changes are r e s u ltin g from work w ith a s b e s to s . I t is believed th a t the a d d itio n of asb esto s a t the propoaed lev els C " *n"fActu re o f p roducts would be harm less to the consumer. T otal d u atin g would have to be w ell in ex cess of any le v e ls accep tab le to the Value f r thC " *b e s t0 * c o n c e n tra tio n s to ap p ro ach th e T hreshold L im it Value <. i r i r 'wWhlr e , aabeStOS du* C ln e x c e ss o f th e T hreshold L im it , P n tially 45 Are M ny o t h e r d u s ts en co u n tered in i n d u s t r y , i t i s as r e a d ily c o n tro lle d as o th e r such d u s ts and i t can be used s a f e ly w ith appropriate precautions. * 5/8/69 I n d u s t r i a l M edicine And Toxicology Department Union C arbide C orporation