Document ppeoyXJ0g4krxqze0151ekba7

IN REPLYING . A D DRESS T H E PU BLIC HEALTH SERV ICE REFER T O : I H --0 A*A ~zi FEDERAL SECURITY A GEN CV ^ ^ r ,-....... . / u 'O PUBLIC HEALTH SERVICE / j , Washingt on 25, D. C. '' - June 9 , 1950 Ur. B obert A. Kehoe K ettering laboratory College of M edicine U niversity of C incinnati C in c in n a ti 19, Ohio ' Dear Dr. Kehoe: Thank you fo r your l e t t e r o f June 7, ex p lain in g the proposed study of the use o f the V itam eter and Y itane in P u erto E ico . This supplem ents what we d is c u s s e d a t th e tim e o f my r e c e n t v i s i t to C incinnati. Prom your l e t t e r i t i s u n d ersto o d th a t arrangem ents w ill be made w ith du P o n t to see t h a t th e t e t r a e t h y l f l u i d i s p r o p e r ly mixed and th a t they w ill a lso send a re p re se n ta tiv e from time to time to supervise th is m ixing, as w ell as a phy sician to carry out p h y sical exam inations. So, since the use of Y itane w ill g re a tly improve the q u a lity of f u e l, since th e re a re few autom obiles on the is la n d any way, and sin ce your s tu d ie s in C leveland, Columbus, and C in c in n a ti seem to show t h a t th e r e i s no a p p re c ia b le h a z a rd i n th e use o f t h i s m a te r ia l, I see no re a s o n why i t sh o u ld n o t be c a r r i e d o u t and g iv e i t my a p p ro v a l. I should be v e ry g la d i f you would l e t me know, from tim e to tim e , th e r e s u l t s o f th e s e s t u d i e s , f o r I know t h a t you w i l l have in tim a te knowledge a s to what is tra n s p irin g th e re . Eest regards. Sincerely yours, pU-. Townsend, M edical D ir e c to r \ ( / , C h ief, D iv isio n o f I n d u s tr ia l Hygiene r f E 0020680