Document DM1Vmo7w6KMaZg8zVJLep9Y5a

.. BOX '201 TRENTON. NEW JERSEY 09S06 U N I T E D 01'/1510N CYPRUS MINES CORPORATION I S I E R R A TELEPHONE 1509 e83-1511'1, TWX l510' eelS-gSe!S Septemher 13, 1972 PLAINTIFF'S EXHIBIT THAN-602 Gentlemen~ I. Re: Asbes~os-F~rm Talc Nany of our customers are inqJirlng as to our tales. They are int~r~!ted in knowing if our ~alcs are true tales and are not contaminated with tremolite, ~ form of asbestos. ~ttach~d is a fOr:l~ letter outlining our pdsi tidn and hO'i such -inquiries should be handled. I Th~re are two separate types of inqu1rles received: on~ from the O..:~,upation:;,l Safety And Heal tH Ad:r.d.lnistra tion (OSHA) pertainIng 'co Fed.:.ral Ret..:l~,tion5, Volume 37, No. 110, which became law on J\l!y 7. 1972. and which conee~ns the allowable amounts of ~shest0s d~~~ i~ the ~ir of 2 manufactJring:pl~lt. The other inquiry is as a resul'f: cf the Federal Drug Admin~stration' s proosed regulations_ l'eg~rding asbe!:; t.os -:torr.ttalc. I Att3;thed you '.. ill ina copies 03; co'Ch the OSHA la,... and the FDA iPl";~Fosal. Please be aware that u,nder theI p~o~osal o-f the FDA, there ar~n't any test methods suggested fo~ det~rmining if talc conta~n5 asbestos-form. In addition, it is 'not stated what asbestos-f0!T., is. Fer example, a lint of p~lp f~ber from a bag can, if looked a t ,through a miCl'O$COpe, be class i :f;ied as fibrou5 in nature in ::'=iVing just one particle present~ Un4er the proposed regulations, the product would be classified a~ asb~stos-form. We have written to the FDA suggesting t.hat they ~dent~fy asbestos-form mineralogicOllly as the OSHA Regulation does, and a~so that they suggest a form of identification by X-Ray Difr.ctio~ techniques. We also s~ggcstcd limits be stated: ex~n~le, 99% fib~r-free. . .' I ,- Our form letter states what asbestos is; how we measure and what our experimental limitations ~re. X-Ray Diffraction techniques can detec~ trernolite at the 1% letel~ This is the limitation of the equipment and what ~c are saying i~ that our products are at J,~ast 99% fiher free. This is not to say that some of our products are not 100% fiber free but we knbw of no commer~ial method of deterM- ining this accuTat~lf and qui~kly. I Subj, 10 Stipulation ofcoondtntlaUt), A V~ry truly yours, THAN 010462 Order. S.u/r, d AL "', AI'. Grrl" RrfrllCfflrles. ft _L. Jacksoa Count). MO. CaK No. fOO-CV-1010S4S L D~l: 1::w: cn<:ls. CAM-11 ,