69 N-4 Part A of in 1954. event this It Note deals with thyroid comprises two tables. dosage relating to the Bravo Part B consists of a letter from Dr. W. H. Adams of Brookhaven with the question National Laboratory to Dr. Roger Ray of DOE. It deals of whether or not prolonged residence on Rongelap since 1957 has resulted It also considers changes in in an increase in thyroid neoplasia. longevity and blood counts. TABLE N.4A #1 Source THYROID DOSE FROM INDIVIDUAL RADIONUCLIDES IN FALLOUT TO THE ADULT HALE ‘b Internal Dose rads physical 3 weeks exposure h 100$ 190 53.2 min 100% 3 21 h 100% 550 h 100% 7 84% 130 79$ 120 84$ 13 Iodine-135 6.6 Iodine-134 Iodine-133 Iodine-132 2.3 Iodine-131 8.04 Tellurium-131 30h Tellurium-131m 25 min External Total — Per cent decay in Half-life d + 8.04 d + 8.04 d 190 exposure 1203 dose — ‘1 Lessard b~ Exposure hours. The rad et to al, the fallout (1985) fallout fell on for Rongelap about Island 7 hours. occurred for about 45