Document 7Ox867eez9VvDjYDMoY8ZGvwj

USG SAN ANGELO SPECIAL p nHco PLAINTIFFS EXHIBIT WCD-82 I - a TJ .. J CERTAIN-TEED PRODUCTS CORPORATION .06/67 ATTENTION OF V alley Forqe DATE: Charleston, r , ' A. L. Schaffer Ju n e 25 , 197*5 ANS'A-IRiNG T O U T S :. o i ; : stlO b y : 1 SUBJECT * , Summary o f - V is it to = > n t ----------------------------------- C-T, J . L . Goodman, M . D . Savannah Roofing CC : S t e v e Monoky E. L. Harper Mr. S t e v e Monoky & I v i s i t e d the Savannah R o o f i n g P l a n d and made a t o u r o f the p l a n t w:.th s p e c i a l r e f e r e n c e t o : . 1. r,he use o f a s b e s t o s in p r o d u c t s , the a s b e s t o s c e m en t. Im p re ssio n : The area in which the a s b e s t o s i s used i s c e r t a i n l y a s o u r c e o f h az ar d t o the employee working i n t h a t a r e a who do es wear a re sp ira to r. I believe that there are three solutions to prevent problems i n the use o f the a s b e s t o s cement p r o d u c t s . ( 1 ) . T h a t we e n c l o s e t h e dumping o f the asb esto s in to the r ;s e r v o ir which subse q u en tly goes in t o the cement and is f i x e d in t h i s l o c a t i o n . (2 ). That the a s b e s to s in the s a c k be mixed w i t h a m a t e r i a l or s u b s t a n c e o f a l i q u i d n a t u r e t h a t i s com p atible with the mix. (3). Th.it the a s b e s to s cement c o a t i n g s be derived from a second source. I n a w alk t h r o u g h the p l a n t , t h e r e was some d i s c u s s i o n a b o u t t h e use o f t a l c . The Windsor T a l c c h a t t h e y now use i s p e r f e c t l y w i t h i n s a f e l i m i t s a s we have had t h i s e v a l u a t e d by t i e Clemson L a b o r a t o r y . A n o t h e r t o .c was d i s c o v e r e d in the co u rse o f i n s p e c t i o n o f the p l a n t where th e y use a S o u t h e r n T a l c and I know t h a t t h i s has been e v a l u a t e d by C - T , E S L ab o r a t o r i e s , G e o r g ia T a l c D e p o s i t s , and W h i t t a k e r , C l a r k , & D a n i e l s . The m a t e r i a l s u b m i t t e d s a y s T a l c ' 1767. I am n o t s u r e t h a t t h i s i s the same t a l c t h a t we saw in S a v a n n a h , b u t R a y b e s t o s - X a n h a t t a n used the T a l c 901A in Southern T a l c and an x - r a y d i f f r a c t i o n o f t h i s t a l c showed C h r y s o t i l e c o n te n t - none d e t e c t e d , amphibole c o n te n t - 1+. The comments were th a t t h e r e a r e 2 t o 5% t r e m o l i t e p r e s e n t , a l s o . c h l o r i t e , q u a r t z , and c a l c i t e are p r e s e n t , l i g h t microscopy and c h r y s o t i l e c o n te n t - none d e t e c t e d , t r e m o l i t e - c o n t e n t - 5 t o 10% a c t i n o l i t e . The amp hib ol e p r e s e n t has o p tica l properties closer to the a c tin o lite region of the trem olite- a c t i n o l i t e s e r i e s . A number o f the a c t i n o l i t e p a r t i c l e s a r e f i b r o u s , 98 t o 99% o f t h e w e i g h t o f a c t i n o l i t e i s in the form o f l a r g e p l a t e s . Q u a r t z , c h l o r i n e , c a l c i t e , and dolom ite were a l s o d e t e s t e d . An exam i nation of the :a lc sample using the d isp ersion s tr a in in g technique at 200X i n d i c a t e d t h a t a p p r o x i m a t e l y 2 t o 5% o f the t o t a l number o f p a r t i c u l a t e was f i b r o u s t r e m o l i t e . T h i s can be coPipa.ed t o about 0.2% w e i g h t of fibrous trem olite in the t a lc . . Using the asbestos fiber to to ta l p a r tic le percentage quoted above, the r e l a t i v e r e l a t i o n s h i p between mppcf fo r t a l c , and p/cc for f i b r o u s a s b e s t o s a re shown as no ted in the l e t t e r o f May 10, 1976. A l t h o u g h t h e s e are maximum l e v e l s o f f i b r o u s a s b e s t o s and p r o b a b l y would no t be r e a c h e d , i t would be d i f f i c u l t t o know and c o n t r o l the f i b e r e x p o s j r e r e s u l t i n g from talc dust exposure. i ) j j ! CTD027201 ^ i ' 'V i n n i; ( , M l ! J U i.-J ' j-i* cr-J r~:: ' ' n" " -- :i K! Ml , S - - * - J-..J : /. /v { '. ; i - 1 1 ! M y i 1.. ,1 ^ J J -i -1t.J - tJ i| j- i. j J;: 1 CORPORA1 E LABORATORY DIVISO*. and STRATFORD L C C A T jCN ` '* to : V/. Krucke - C harleston-f- date: May 10, 1976 *9 0subject: Southern T alc - Asbestos A n a ly sis O F lA lA L - I have re ce n tly rece ive d th e rep ort from Vi. C. McCrone A sso cia te s on the Southern T alc Sample you subm itted. A copy o f th is report is attach ed . I have a lso d iscussed these r e s u lts with L . B. McCrone . and I . Stew art o f McCrone. - The r e s u lts o f t h is report can be summarized as fo llo w s : C h ry s o tile x -ra y d iff r a c t io n (1% s e n s it iv it y ) ` o p t ic a l microscopy (1% s e n s it iv it y ) wt. % none detected none detected Amphiboles x-ray d iffractio n ` o p tica l microscopy " 8-10% tre m o lite 5-10%.tre m o lite ` dispersion staining " t h is is a higher value than in the report from McCrone. I t i s the resu lt of a re-exam ination o f the spectra by I . Stew art. An exam ination o f the t a l c sample usin g the d isp e rsio n s ta in in g technique a t 200X in d ic a te d th a t approxim ately 2 to 5% o f the t o t a l number o f p a r tic u la t e was fib ro u s tr e m o lite . T his can be compared to about 0.2% by weight o f fib ro u s tre m o lite in the t a l c . Using the asbestos fib e r to to ta l p a r tic le percentage quoted above, the r e la t iv e r e la tio n s h ip between mppcf fo r T a lc and p /cc fo r fib ro u s asbestos are shown below. mppcf X (0.05 f/p X 35.3) = f/ c c 0.29 ' 2.9 20 0 .5 5 35 Although these are maximum le v e ls o f fib ro u s asbestos and probably would not be reached, i t would be d i f f i c u l t to know and co n tro l the fib e r exposure re s u ltin g from t a l c dust exposure. continued J m \ CTD027202 W. Krcke Page 2 May 10, 1976 I am under the impression that we 'should <be' ab le to ob tain a commercial t a lc with lower le v e ls o f fibrous asbestos. ` I have reta..ned a copy o f the x-ray d iffr a c tio n spectra here in case Southern T alc wished to examine or discuss th is a n a ly s is . John J . Magenheimer JJM : s ab cc: I . lie aver - Manheim J . Wronski - Manheim P. Cooper - Charleston CTD027203 D ate C u____________ Client g fV) F i ' i c . t iow ft 'lv .t s \-ia.h C o j /?, /? 7/, 1A Project S o l O Sample Description -S o i e ' , la *?v X -P A Y DIFFRACTION _ C hr/sotile Content*^ >-yi a a ^ 't e c t & c ( Amphibole C ontent_______ -j- *' ' ' C om m ents^ -7e o / i t s . i s h y-ac-.ei^ ^ 2ci.! LIGHT MICROSCOPY Chrysotile Content /}&* diitchJ. . Trem olite Content S - /% ctho . ' Com ments Tit* (ihtL'i'joL D K Sth i hai o ffic ii f-C'f-'h<S d o s ib '/ ^ t. tj f- rt-Z Hf.'tniri -acTifiohrc S$h?.<. /?i i u ^ a U iy ^ 'P ; I ctlr.ekltp id id iS H Tiahus b u t i ' iM ifn o f j?:~, l/ tir.L ?o f'cch n o ii-. ; /*< /// li* . -ft-lH O f'fah4_. fh-fes, 0, (axh* . hfph'rf.. (1IccT-L .h J ddohiifi- c a n . a!soJ i-fic itd . c u ( .b t c & i T f-- waiter c. rrw croce associates, ir CTD027204 29 A p ril 1973 D r. Cohn J . Magenheimer RM Friction M aterials Compary 75 E a st Main Street Strat'ord , Connecticut 06497 * ' - Dear D r. Magenheimer! '. ' Enclosed are our laboratory report and the k -ray charts of your talc sam ple obtained from Sou tiem T alc. ` ' The sunphibole found in the sam ple has the optical p rop eities of an actin olite, rather than a trem olite, and consists partly of fib ers and partly of equant plates. (The ?v-ray powder diffraction patterns of trem olite and actinolite are essentially the sa m e .) We found no chrysotile. . If you have any questions about this work, please let m e or Ian Stewart know. With best w ishes, Sincerely yours, LB M rfe attach. re f: 5390 - P .O . S 27594 Lucy B . McCrone Senior Research Scientist 2320 SODTI M IC H IG A N AVENUE . C HICAG O . I L L I N O I S 6 C I6 . 312 -6-1 N7100 C A U L E . C H E M IC R O N E CTD027205 Date C e r ta in T e e d C J Ju n e 2 5 , 1979 Subject SPRAY-ON INSULATION To MR. D . HALE From (7 f) T . C . SHAFFER / a ls Location and mail code SAN ANGELO, T X . Cameron W ho lesale Location and mail code VF CORP #4 ce: 0. H. K it t il s t a d - 1125/4 J . R. T aylor - 1125/4 The r e s u lts o f the fib e r an a ly sis fo r the bulk m ill area and the bulk warehouse area in su la tio n samples in d ic a te th at there was no d ete ctab le asbestos. The laboratory th a t conducted th is a n a ly sis i s accred ited under the Laboratory A ccred ita tio n Program o f the American In d u strial Hygiene Association fo r the an alysis o f asbestos. I f I can be o f fu rth er a s sista n c e , please c a l l . Enclosure Hager Laboratory Report 01- 25-0005 CTD027206 HAGER LABORATORIES, INCORPORATED ANALYTICAL SERVICES FOR INDUSTRY June 14, 1979 M r. Thomas C. Shaffer CertainTeed Corporation P .O . Box 860 Valley F orge, PA 19482 Dear M r. Shaffer: We a r e h a p p y to be p r o v i d i n g a n a l y t i c a l s e r v i c e s to y o u . I f , in th e f u t u r e , a n y q u e s t i o n s a r i s e c o n c e r n i n g s a m p l in g o r a n a l y s e s , p le a s e c o n t a c t u s . We m a in ta in c o m p le te f i l e s c o v e rin g occupational health and tr y to pass as much of th is inform ation on to ou r c lie n ts as p o s s ib le . We th a n k yo u f o r u s i n g th e s e r v i c e s o f H a g e r L a b o r a t o r i e s , I n c . Robert N. Hager, J r . , P h.D . P re s id e n t R N H /h jm 12000 E. 47th Avenue/Denver, Colorado 80239/(303) 371-1441 CTD027207 HAGER LABORATORIES, INCORPORATED ANALYTICAL SERVICES FOR INDUSTRY June 14, 1979 REPORT CertainTeed Corporation P .O . Box 860 Valley Forge, PA 19482 Attention: Thomas C. Shaffer Reference: Our S e rvice Number 2460 Analytical Requirements Two bulk samples w ere re ce ive d fo r asbestos id e n tific a tio n and content d e te rm in a tio n . A nalytical Method D uplicate p o rtio n s of the bulk m aterial w ere immersed in liq u id media of known index of r e f r a c tio n on a m icro sco p e s lid e and o b se rve d at 100 p o w e r u sin g a M cC rone D is p e rs io n S ta in in g O b je ctive w ith p o la riz e d lig h t. C h a ra c te ris tic s o f the fib e rs under p o la riz e d light only and under d is p e rs io n staining conditions using fo u r media w ere compared to s im ila r ly prepared samples of known asbestos type. Estim ates of asbestos fib e r content were then made by com paring the quantity of non-asbestos m aterial w ith asbestos fib e rs . Analytical Results Sample Number D escription Mill Area " Sample contains no detectable asbestos and 70-90% non-asbestos fib ro u s material . Warehouse Area Sample contains no dete ctab le asbestos and 70-90% n o n-a sb e sto s fib ro u s m aterial. D is c u s s io n Hager Laboratories, In c. participates in a p ro ficie n cy testing quality control program fo r asbestos d e te rm in atio n in insulation sponsored by E P A and the Departm ent of the In t e r io r . 12000 E. 47th Avenue/Denver, Colorado 80239/(303) 371-1441 ' CTD027208 Page 2, SN2460 CertainTeed Corporation June 14, 1979 D iscussion, continued D e t e c t i o n l i m i t f o r b u l k s a m p le s is le s s th a n 1% a s b e s to s f i b e r s . Samples and raw data are filed and available upon request. AMW/hjm A ndrew M. Whelan Laboratory Supervisor CTD027209