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I W. H. REYSEft COHTAM CONyiD;,7 IAl. SEP 19 # /. P ii* Mo. 8A3S-1 c / ^ YTtCA-L KFSEAftCh DtPAft~.HF.VT RPORT ADP . flttJ---------- Subject Examination at Talca fo r the Praaenca of Asbesto s _______________________________________________________ Q64-1Q9 Manufacturer Various . Cuatoner Department_________ A n a ly tic a l R cntarch________________________ _________ Requested by__________R. W. S co tt______________ Data Connie te d 9/15/72 r_.`, < ' ABSTRACT . . There arc* f i f t e e n ' d i f f e r ant ta le a in oae fo r Chicago Production . V>- Pour o f th e se vara analyzed and reportad in AIP-8435. The ad dition al aloyen ta lc a ere analysed and reportad herewith. * M icroscopic mij X-ray e o a ly iia Indicate that among the f llto a a ta lc a,- r lx are- r e la t iv e ly d e a n , the r e st are aora or le se contaminated by tr o n o lite which la a mineral c la s s if ie d aa aabeatoB. The g i t clean talca oral - . *. ' . ~ y 62 23 00 p62 3d 00 \ 62 20 25 * 20 26 30 21 $ 32 23 i ' tir rrJ*.v'% A'4T'9,?r i> T a le , Vary PU XIcrone Talc 549 Klatron HC&-75 . ' t o ta l 4190 t o t a l 4L - Talc ' TCUI Tele T a ilin g s ; PLAINTIFF'S EXHIBIT CAM-373 Analy*t_ 7 < t. Dr. Frank H. Chung/c chard W. S c o tt, D ire cto r A n alytical R estarci Department Shervln-U lllion* Reaaarcb Cantar i SW GOODHUE 000008 COMPANY CONFIDENTIAL ADP-8661 PUnPOSE In o rd e r to be prep ared Co comply w ith Che I l l i n o i s A sbestos Em ission R e g u latio n s which might apply to Che p ain c in d u s try , lo u t Calcs used for Chicago Production were analysed fo r fib ro u s asb esto s. The r e s u l t s o f Chat a n a ly s is were re p o rte d in ADP-8635. As Inform ed by Jo e T hornton, t h e r e a re a c tu a l ly f i f t e e n d i f f e r e n t t a l c s in use l a Chicago P ro d u ctio n in c lu d in g Che fo u r t a l c s analyzed. I t was th e r e f o r e re q u e ste d t h a t th e p re se n c e o r absence o f fib ro u s asbestos in the a d d itio n al eleven ta le s be determ ined, CONCLUSIONS Eleven a d d itio n a l ta lc s were analyzed by m icroscopic and X-ray d i f f r a c t i o n m ethods. The r e s u l t s i n d i c a t e t h a t among th e t o t a l of fifte e n d iffe re n t talcs the follow ing six are re la tiv e ly clean. Code Name SnppHnr 62 23 00 T a lc , Very Pine 62 36 00 62 20 25 62 20 26* 62 30 21* 62 32 25. *. Micrcrae T alc 569 M iatron HGD-75 Bmtal 6190 E atal - Talc Toxaa T alc Tat H uge E astern Magnesia U h leak sr, C lark and D aclela United S ie rra E astern Magnesia W hitaker, C lark and D aniels United S ie rra E astern Magnesia E astern Magnesia , * W h ita k e r, C lark and D aniels * R eported in ADP-8635. The f i r s t two a r e th e c le a n e s t. The l a s t one l a o f much la rg e r p a r t i c l e S iz e . ' I G enerally, the ta lc n tfro a the same su p p lie r have sim ila r ch a ra c te r i s t i c s , Judging by th e rJEulta of t h i s a n a ly s is , th e c h a ra c te ris tic s o f th e p ro d u c ts o f the s ix ' s u p p lie r s a r e ea follow s (1) E a ste rn M agnesia T a lc (EM): R e la tiv e ly c le a n t a l c s o f fin e p a r t i c l e size. (Z) W h itak e r, C lark and D a n ie ls (VCD): R e la tiv e ly c le a n t a l c a , co a rse p a r ti c le siz e sometimes. (3) U nited S i e r r a (OS): Uniform p a r t i c l e a l z e , some grades a re c le a n t a l c a , some g ra d es e r e contam inated w ith tre n o llte . t SW GOODHUE 000009 COMPANY CONFIDENTIAL ADP-8461 -2 - <4) D esert Ilin e ra ls (DM): f i n e p a r t i c l e s i z e w ith a em ail amount of trcm olite. (5) New York T alc (NY): Contain* c r y s ta l n e e d le s o f v a rio u s longth9 and w idth, contaminated w ith creoiollce. (6) In te rn a tio n a l Talc (IT ): Contains c ry s ta l needles and/or fib e rs, contaminated w ith asbestos, RESULTS The r e s u lts of m icroscopic and X -ray d if f r a c tio n a n a ly s is are lis te d below In c lu d in g th e fo u r c a lc s p re v io u s ly re p o rte d (ADP-8435). The .sequence of l i s ti n g la In accordance w ith th e ir degrees of contam ination. The e ix clean t a lc e a re l i s t e d f i r s t , th e more contam inated ones ere lis te d l a s t . T alcs from th s sana su p p lie r a re grouped to g e th e r i f p o ssib le . For the sake of s im p lic ity , the i n i t i a l s of v arious su p p liers are used In th e f i r s t colunn o f th e l l e t . One com plete s e t o f P o la ro id m icrophoto graphs I s a tta c h e d to R. W. S c o t t 's copy o f t h i s r e p o r t . . They are a v a ila b le to anyone who i s i n t e r e s t e d . * Semple, Code and S u p p lier O b serv atio n s MLcroscopy X-Ray D if f r a c tio n 62 23 00, T alc, Very P in e, ZH, US, WCD P ine powder of re th e r uniform p a rtic le e ls e and sh ap e. The ap p aren t p a rtic le alee la about l - 5 p . Pew p ris m a tic cryatale (tods) of , larger sizes..' Clean ta lc , Mg,S1.0l6 (OH),, ASTM Card 13-550. . 62 34 00, Hicrone T alc 5 , EM, WCD Vary s i m il a r to 62 23 00. Cleon t a l c , Mg,Sl0k(0U)3l ASTM Card 13-558. 62 20 2 5 , Very a lM lla r to 62 23 00. M istroc HGIW5, US ........... - IT Clean t a l c , M g,SlkOt (0H)a , ASTM Card 13-558. 62 20 2 6 , . ' Bmtai 4190, EM Vary s i m i l a r to 62 23 00. (See ADP-8435) C lean t a l c , M g,S i,04(> (0B ),, ASTM Card 13-558, b u t not aa c lea n as 62 23 00. 62 30 21, Emtal 41T a lc , EM Very s im ila r t o 62 23 00, but coarser in p article s i z e . (See ADP-8435) Clean t a l c , H g,Si(,0iO(0H)a , ASTM Card 13-558. Xta X-ray d iffra c tio n p attern la very s im ila r to t h a t of 62 20 26. SW GOODHUE 000010 COMPANY CONFIDENTIAL ADP-8461 -3- Sample, Code and Supplier Mlcrnacupy O b serv atio n s X-ttey D i f f r a c tio n 62 32 25, Texas Talc T a i l i n g s , UCD. P r e te le s a r e much coarser than th at of 62 23 00 w ith a wide p article size d istrib ution. la rg e r par t i c l e s are up to 30p in d ia m e te r. No n e e d le s or fib e rs were observed. M ainly t a l c , MgjSi.O,(OH), , ASTM Card 13-558. Small amount of an tig o rlfce, ASTM Card 7-417. No detectable trem ollte. ,62 40 00, T a lc , Soap s to n e , WCD. I t has a gray co lo r w hile a ll the other ta lc s a rt u h lta . Its p a rtic le s are s t i l l coarser than th a t o f 62 32 25, b u t i t s p a r tic le size distribution is narrow er. T alc, Hg.Sl*0,e(0H )a, ASTM 13-558. Magnesium C ham oalta, ASTM Card 5-0146. Very am ali amount of t r e m o l l t e , ASTM Card 13-437. 62 20 26, m a t r o n MSC, PS S im ila r to 62 23 00 In p a r t i c l e - s i z e b u t h as many c ry s ta l n eed les. (See ADP-8435) T a lc , MgiSlfcOie(OH)), ASTM Card 13-558. T rem ollte, CaaM g ,S l 0 ii(0 B )* , ASTM Card 13-437. 62" 33 00 T alc, M lstron, T -076, OS S im ila r t o 62 20 24 In Same as 62 20 24 b u t appsars ? 'p a r t i c l e a lz a and sh ap e.-' to co n tain more tre m o llte . The c r y s ta l n ee d le s are * la rg e r in aunbar and longer lsngth. - ; ' ' # t 62 20 21 Very s i m il a r t o 62 33 00 Same as 62 33 00 but co n tain s N ytal 400, T a lc , In every re s p e c t under th e one a d d itio n a l component V a n d e rb ilt, NT m icro sco p e. (See ADP-8435) c h r y s o t l l e , ASTM Card 9-444. 62 32 00 S im ila r ICO 62 33 00 b u t Same as 62 20 21, l a , N ytal N y ta l 300, T a lc ; uuch c < ^ o r . I t c o n ta in s 300 and N y tal 400 a rc tha NY t many laf^\e p r is m a tic same a a e e r la l, th e forrnor .' . . cryatalar of siz e up to I s much c o a rs e r: . . ' . 0 20 a 40u and same, r e a l long -- ' . needle c ry sta ls o f size about 2 x 500p.- 62 35 00 T alc, FlakyG ran u lar, Very F in e , IT , DM F ine powder o f p a r t i c l e s i z e S im ila r to 62 40 00 b u t about l-5 u , oeay c ry sta l c o n ta in s le s s ta lc more needles of obout 1 x 15p, eh an o alte, approximately a few la r g e r p rism a tic th e asms amount o f c r y s ta ls o f about 10 x 120u tr e m o llte . In size. I SW GOODHUE 000011 COMPANY CONFIDENTIAL ADP*8461 S am ple, Code nnd S u p p lier Observtloos Mleroacopy X-R.iv D i f f r a c t i o n 62 36 24, S im ila r to 62 35 00 in T a lc , H i-Fine 80, p a r tic le size and shape. DM T alc, NgSi*0,0(0H ),, ASTM Card 13-558, T re m o lite , CaaMgjSi.O,, (0H)a , ASTM Card 13-437. 62 22 00, T alc, A sbestine, 5X, IT S im ila r to 62 35 00, b u t the c ry sta l needles are se v e ra l tim es longer end the p rism atic c ry sta ls are 2 to 3 times w ider. T a lc , M g,SI4 ,0 ^ (OH)a , ASTM Card 13-558, T re m o lite , ASTM Card 13-437. P robably co n ta in s sm all amount of c h r y a o tlle a e b e a to s , ASTM Card 9-444. 62 21 21, T alc, Fibrous, IT * I t la composed o f th e Same as 62 22 00. I t appears follow ing: t h a t b o th 62 21 21 and 1. P in e powder o f p a r t i - 62 22 00 a re of th e some cla size In the l-5u range. m aterial but d iffe ren t 2, Some p ris m a tic c ry grinding grades, the la tte r s t a l a o f about 16 x 45y has fin er p article size. in siz e . 3. Some o r y s t s l n e e d le s 1 of siz e about 1 x 45u. 4. Small amount o f . fib e r s o f s iz e up to 18 X 400u, each l a a ; bundle of p a ra lle l f i b r i l s . .a * * .S d is c u s grow .- A ll ehe samples w are o b ta in e d from th e m i ll room in th e R esearch C an ter ex c ep t 62 21 21 end 62 32 25 w hich w are su b m itte d by Joe T hornton. In cases where th e re , a re s e v e ra l s u p p lie r s o f th e t a l c s w ith the ssma code number, th e ossm o f th e s u p p l i e r o f th e s p e c i f i c t a l c sample analyzed la not a v a ila b le .* * . ff ... . I t la n o tic e a b le t h a t . t h e t a l c s from E a s te rn M agnesia a re o i l c le a n , w h ile th o se from D e se rt M inerals and B ar York t a l c are a l l contam inated. The ta lc s from W hitaker, C lark and D aniels and U nited S i e r r a may o r may n o t b e contam inated w ith t r e m o l i t e . M icroscopic o b s e rv a tio n s r e v e a l th e c o lo r , p a r t i c l e e l z e , and p a r t i c l e o h ape. X -ray d i f f r a c t i o n a n a ly s is g iv e ? th e chem ical compo s i t i o n and c r y s t a l s tr u c tu r e o f th e sa n g le . M a te r ia ls o f. d if f e r e n t chemical com position a n d /o r d if f e r e n t c r y s ta l o tru c tu ro m ight look a lik e under the m icroscope. ) SW GOODHUE 00012 COWANT CONFIDENTIAL APP-S461 -5- Both tth ry a o tlle (aabeato) and a n tlg o rite e (noo-aabcstM ) a p p ro rl at to th e Baa* form ula Mg,6i,0(OH)* and hava v ary g ir e lla r X-ray powder p a t t a m o a l t h o u g h t h e c h r y a o tlla a a ra f Ibroua end th e a n t i g a r it e * a re lamellar. M icroscopic exam ination I s very helpful fo r th e i r d iffe re n tia tio n . W m t X .-a . - r . " ' . : aHwa V> I F SW GOODHUE 000013