Document 1530bNRZzM9kgp9B1ZnL3vvwE

r Ur. D. C. Willard Building 8-96-2 E. Q. Hull, M.D. /P-']-?/ fnCJ April 23, 1967 Particulate Matter in Air Asbestos Dust Project So. IH-PAR-7S-67 Dear Don: As per our telephone conversation today, I an attaching a reaur*' of our determinations of dust_breathed by the employees while cutting and installing "kale" insulation. We feel that further air sampling is needed to giver you more meaningful conclusions as to the best protection for the employees handling this material. . At your convenience, we will berglad to discuss these findings with you. In the meantime, if you would keep us informed of jobs pcrtain- ing to cutting, installing, and removing "kayle" insulation, it would be helpful in scheduling the air sampling work, ' Thanks, 2t Bert Hurray UCC 015589 gra.'s.r A03074