Document peONEx6Nxj5jmk0w8BD0eGJ8k

otsH- UNITED STATES MINERAL PRODUCTS COMPANY OMrd OMm M fTAwwoPL ncw jinrr o?s?4 TL 34MIS0 **** CM **t C****s AfCOmtUL H+m Alton Imi, teftf 2ub*r, 4 SLebel* - mate Brisco* Canpeay* Joint Venture Cleveland Jbderel. QCfios Building i 2*t 9th sad Iskifiri* davtlaad, Ohio Dear Br. anast. J* 3* 1966 f I PLAINTIFF'S i EXHIBIT USM-224 In reply to the telephone request of VUHao Vdjsr, we are pleased to ceenent on tbs qMstlens reieed am sluing tbs possibility of a bsslth beard thought by seas to result trm exposure to tbs spnylag of tbs oinsral fiber aov applied for fireproofing st tbs Cleveland Jbderal Offlcs Building* There has boss eooe poblicitr recently with respect to the possible effects of er7>tiT* to high conesatrstlons of asbestos dust* Although tbs studies bare boss tadsr wsy for years* oo final reports or findings base been rsleasod* .Apparently* tbs probability of s heelih hazard exists only la thosa situations wbars tbsre is exposure to asbestos dust over long periods* probably sexy years* and la places share there is s high dnst concentration tad Tuntilation is Isettj*. Sons of these studies ire related specifically to spray ni&srtl fiber products, nor to oo CASCO 2IAZS-5H3SZ2 Type D being used oa this Job* Our CA7C0 aateriale are tpseielly treated during processing slth diet control agents* fust concentration is further sdsialsed by tbs Introduction of stoalzed* water sprays as tbe fiber losses the boee* The likelihood of any serious concentration of (hurt particles would be only la tbe landiat* vi^nity of tbe spray gun* for that reason ee caution applicstore to veer suitable Aurt seeks, since they ay be working under these conditions over exteadod periods of tine* We doubt seriously that' any smA hsasrd exists for other wortaasu on the sans site who are not actually spraying fiber* We hare no Joaouledg* of any spa ajar or vorkaan using CAFCO aeterial or of any parson exposed to it ever haTing been afflicted with a resplratcry sllaaat etused by our fiber or process, Va bain been informed by tbe other eeaihsm of the Sprayed Hineral Rber Xaxnfbeturere Aasociaticn, Inc* that* eiadlarly* they bare no knowledge of any caso of respirstory illness being caused by tbe use of their sprsy cinersl fiber products* Of coves* If a particular worlosn le unduly sensitive to dust, he should also wear e suitable protective aaak* Such allergic tendencies would be exhibited in the presence of nest aiy dust, such as fiber spraying, concrete hasaerlsg* plaster airing* floor sweeping, and tbe like* * We believe this answers tbe questions raised, and we will be pleated to furnish such other information as asy be required* iH Tours very truly, JTO/deo hZL UNITED STATES XEGTtAL PRODUCTS CCMFMX -- : * - t -< i// John f* O'Rourko, Tie# President - W' M| tmt Ml fMtl AUt MM(H 13* HU *M IM l aUI <(*(. <*l*l* MW* ** (*** 'l uc* tw'ii rr*<t XH.cn cm i m MM ** IlWHIII Ml MOkllKM, l