Document gbV03rZ7a9XpKMpQJozy7KQe9

CA .eiNA O* I t o l i MUCIDO M a r c h 11, 1070 D r, Norman E strin CTFA H eadquarters 1133 Fifteenth S tre e t, N.W . W ashington, O .C . 20005 D ear O r. EstrLn; 1071 In August,/^ t e s t p ro g ra m w a s in stitu te d by o u r com pany to in su re c u s to m e rs u sing o u r c o s m e tic g ra d e ta lc s th a t they a r e Tree or fibrous asbestos . It w as determ ined that the use of X ~ray diffraction would be th e m ot p ractical m ethod of detecting the possible p resen ce of asbestos and thus assu re us of a reliable and workable m eans of p e rio d ic m o n ito rin g o u r t a l c s . In tho event th a t the r e s u lts of th is testing showed possible positive re su lts , thp sam ple was fu rth er subjected to optical m icro sco p y . In a ll c a s e s the te stin g of our products was perform ed by outside independent lab o rato ries, Wn have also used o th er te st m ethods such as D ifferential T herm al A nalysis and Optical M icroscopy, however X -ray diffraction gave us the best reproducabls results ,, O u r Tile co n tain s r e p o rts on v a rio u s g ra d e s uf co sm etic ta lc fro m a r e a s In A labam a, N orth C a ro lin a, M ontana, Italy, South K orea and V erm o n t. T h ese rep o rts w ere based on approxim ately 74 ground ore sam ples analyzed over a period of four y e a rs all of which show non-deteetable am o u n ts OF fib ro u s a s b e s to s fd rm m in e r a ls . A dditionally, s e p a ra te te s ts made during this period by many of our custom ers supperteo and substantiated our test resu lts. A ll of th e te s tin g fo r th e p r e s e n c e bf a s b e s to s form m in e ra ls In ta lc ha* b een p e rfo rm e d by ''o u tsid e e x p e rts " Including th e follow ing: W alter C . M cCrone A sso ciates, Chicago Illinois E rn e s t F ullom A s s o c ia te s , S o h m ocbxJyr. ,Now Y ork E .S . L a b o ra to rie s, M a rlten , New Je rs e y P ro f, C h arles R . M anning, North Carolina U niversity P r o f . S e y m o u r 21. L uw in, New Y o rk U n iv e rsity D r. Gordon Brow n, Princeton University continued * .......... IM roXTCHS * M AN U rA C l'lJK rH S MINERALS, COLORS. PIOMENTS I WCD000012 De Bell &R ichardson, Enfield, Connecticut Columbia S cientific Industries, A ustin, Texas W e a r c w illin g to su b m it th is in fo rm atio n to th e co m m ittee In d e ta il to help substantiate th eir claim s. Very truly yours, WHITTAKER,CLARK &DANIELS, INC. F rederick F . Roesch Executive Vice President FFR/dm ' PLAINTIFFS EXHIBIT WCD-318