ATTACHMENT 16 13 July 1945 G. Friedlander, L. , I. Johns R. W. Dodson Radiation Health Hazards The recent large increases in the amounts of radioactive materials handled by your groups, as well as by either groups of the Project, have seriously increased health hazards by the resulting higher levels of contamination and personal exposure. In addition, greater demands have been placed on the personnel and equipment of health and monitoring groups (A-6 and C