UWFL-91 BIOLOGY AND MEDICINE (TID-4500) GAMMA DOSE RATES AT RONGELAP ATOLL, 1954-1963 Edward E. Held Laboratory of Radiation Biology University of Washington Seattle, Washington Lauren R. Donaldson tor Direc Energy qrtmen oifice an's i r o t s i H m* arc Work performed under Contract AT(45-1)1385 with the United States Atomic Enerav Commission.