Document pmEQJOGj11JB41joqzRbe19ME

m*. ii-suut *,.unuieriua.n, national uypsum company UNITED STATES GYPSUM COMPANY 101 SOUTH WAClit OtlVl CHICAGO. UUNOII 00*0* I? PtAINTlFTS I! EXHIBIT If . BY MESSENGER . '**' A. July 9, 1965 Hr. Vendell J. Broun Spray# Price# Hough & Cuahaan 134 South LaSalle Street Chicago# Illinoia 60603 Re: Aabeatoa Exposure Bear We Attac recel evalua keys its allowable air, brmation la a copy of a letter we have nvllle Corporation concerning their eBtoa fiber exposures. Apparently Johna-Manville ive meaatirefe^to exposures in exoeaa of a wtimim 00,000 particles per eublo foot of Zt la very lnte heir comments concerning the relationship of sure to aabeatoa fiber. I would be very curious to Know wfcat/the oth^r "potentially toxic materials" were that could hake contributed tp^t conditions found by the cancer study. It would-be my re tion that you write to Br. Kenneth Smith# Medical Dirpdto; ' phna-Manville for a more* definitive explanation. In the meantime, I will d$teytln&v whether^there are any other major suppliers of aabestoVto whom^we^dould write for an opinion. Very truly UNITED STA COMPANY CPKiJt attach. C. P. Manager# Insurance 25061