Awe stimated dose rate O 1 Operation Operation Gamma Dose Rates on Rongelap Island | Milliroentgens per hour at O+l \ Redwing Hardtack A From Dunning 1957 O University of Washington ———Theoretical decay T7!@ Theoretical decay of ues fission products as measure 2, by the AN/PDR-39 (TIB) L radiac at 3 feet above an infinite plane (Miller and Loeb, 1958) March! 1072 10? 10 1955 j , '56'5758596163 Litt tt 103 Days after March 1,1954 and Marchi of each year indicated Fig. 2. 104 Decline of Gamma Dose Rates at Rongelap Island. 13