TABLE N.4B #1 THYROID DOSE FROM INDIVIDUAL RADIONUCLIDES IN FALLOUT TO THE ADULT MALE *> = 28 oe a oe ee ee ts ee oe er es a es ee es ae ee a eee ee ee a ee ae a ae a a Source Half-life Per cent physical decay in 3 weeks Dose rads Sse wee SB eee we eB wee TS eee eee ee SP OE ee eee ee Owe ST ew ee Pee ew Se we Ke ST eee eee Internal exposure Todine-135 6.6 h 100% 190 rad Todine-134 53.2 min 100% 3 Todine-133 21 bh 100% 550 Todine-132 2.3 h 100% 1 Iodine-i31 8.04 d 84% 130 Tellurium-131 30 h + 8.04 d 19% 120 Telluriua-i3le 25 min + 8.04 d 84% 13 External exposure 190 Total dose 1203 sea Bae SB ees ST SS ST SCO eS STM ST SSO SS ST se SB eSB ee ST Se SP ee Be See SE eS SF Se SST SBS eT Se eee eee a/ Lessard et al, b/ 6Exposure to the fallout on Rongelap Island occurred for about 45 hours. (1985) The fallout fell for about 7 hours. 60