Document mq8GKDYMoeEz2vg0jEv7QO2md

WAYiiTE STATE UNIVERSITY CO LLEGE O F M EDICINE 1401 RIVARD STR EET DETRO IT 7 . MICHIGAN DEPARTM ENT O F IN D U STRIA L MEDICINE AND H YGIENE Sep tem b er 9, 1963 G. O. Eddy, M. D. M edical D irector The Carborun dum Com pany Bon ded A b r asiv e s D ivision P . O. B ox 403, N iagara F a lls, New York D ear Doctor Eddy: In r e sp o n se to your le t t e r of Au gu st 20, I ap p r e ciate y ou r co n ce r n r e la t iv e to th e r e fe r e n c e on p age 131 to a b r a siv e s. It o ccu r s in the in trodu ction w ritten by D r. Ed gar M ay er. It is m y su ggestion th at you w rite d ir ectly to h im . W ith r e sp e c t to th e st at em en t b y D r . M ay e r , h e r e fe r s to a b r a siv e s in gen er al an d d oes not sp e cifically m en tion carboru n du m , silicon carb id e or alum in um oxid e. The fact th at fr e e cr y stallin e silic a d oes occu r in at le a st som e a b r a siv e s w ar r an t s cau tion by the u se r . I w ould con cu r w ith you, h ow ever, th at du s t fr o m a r t ific ia l silico n carb id e an d alum in um oxide a b r a siv e s, p er se, ar e r e lativ e ly in er t. Fr an k ly , I do n ot b elieve th at the p ar agr ap h an d sen ten ce in cr im in at e s th ose a b r a siv e s. An ad d ition to th e sen ten ce cou ld h ave been "e xce p t for ar t ific ia l ab r a siv e s of silicon carb id e an d alum in um oxide. " I w ould be gr ate fu l for w ord fr o m you r e gar d in g th e v ar io u s r esp o n ses to your letter. W ith e v e r y b e st w ish AJ V:ebh Arth ur J. yorw ald, Ph . D ., M. D. P r o fesso r /an d Ch airm an '/ Departm ent of j