“5 8 pemeres ef 79 INTERNA] DEPOSITION OF RADIONUCLIDES riod. Radicanalysis of the excreta was performed in the sume manner as that of the tissue samples, described above. 5.42 detonation was about 4 uc. The distribution of activity in the individual issues is shown in Table 5.8. Over 90 percent of the beta activity wis localized in the skeleton. The highest activity in a soft tissue was found in the liver, which had, however, less than 0.5 percent of the total body burden. ‘The colon contents had the second highest activity for the soft Uissnes. about Findings and Interpretation Gross Observations, The animals had been free on the islands. Although malnourished, 0.24 percent of the total. The alveolar tissue they showed no other evidence of disease. of the hing had an activity less than Q.0y percent of the total activity in the body. Grogs beta and gamma activity of the chickens at T4 days post detonation was approntmately 0.2 ye. ‘The wros3 activity per body weight of the chicken is appronimately the same as that of the pie. The distribution of activity Autopsy of tvo chickens which died during shipment revealed no pathological findings that coukl be associated with radiation. On the basis of an assumed 12-houreffective fallout time, the animals from Rongelap received an integrated external duse of 280 to 860 1, depending on the date of their collection (see Table 5.7). The pigs from Utirik received a calculated dose of 32 r at the time of their evacnition. The annals all showed extensive external contamination, ranging from 0.5 to Samy per hour xt 30 days post detonation. This acuivity was reduced about 73 percent by a in the tissues of the chicken (Tuble 3.0) was very similar to that inthe pig. Most respiratory radio activity was localized in the turbinates, asa result of entrapment of the large particles, which could not penetrate to the alveolar tissue. The beta activity in the skeleton of chickens at 160 days dropped to 4 percent of the value at 24 days post detonation, while in the same period the gammaactivity dropped to 0.2 percent washing with water alone. Radionctivity of Tissues and Earcreta, The wvoss beta activity of the pigs at $2 days post Table 5.9.—Beta and Gamma Activity of Chickens From Rongelap (ye x 10") ‘ . , Dav or DeatH’'....i Day axatyzents....' Tistve Hex | tes 92 Dave | Day 24 —S_ ——= Day 33 | Davo Tibia... ole. cle eee. 760 BBN Skeleton ........eeees 11030 s3en0 Liver... ccce eee eee 119 21 Gizzard..... 2.2... eee J Gizzard (content)... CrOPe. ccc ccccceecee| (CL) | Bera Gawsas Beta Gamnay i ee Erree | Intestine — | wewceecenene ceeceencecee Day oy BETA RISO 4th 1one 332.0271 | ee. canececenuee cececeeee cee 13 i9s0 12 2 0.93 0439 Hex 036 Dav| -_ &. |. | Hes er | Hew ez Dav 140} Day ate ——=—" Davin Dav 122 Bera Gansta Beta Gasesta ——— us Ban 72 7 Rex ets —oS Dav Wr Gana me ee wee ee ee Dav iis == 4 Dav ie Beta Gana Bera GaN rl _ 2300; 218.8 307u* $1200 BNO 34 3203 7.0 65 7.6 - 2.8 41.3 34.3 wo 4st W7oass wW.3 7.8 a 79 7.5 = 12.2 1.2 63 33.2 «$1 437 i 5* 10.7 1.8 rn 6 6.3 45 0 , COTLEMIS. 0.0 ceca eee} Intestine (8) and . cv eeeaeeeeeee aeacerecerce COMCNLS. eee eee eee ee ete e eee eee 1.6 Pancreas... 0.0. cece et cece cee eee ween ee ee eens 0.16 asesveeecees Voeeeeee eee 0 fi Trachea............. es Turbinates.....0....-[ ccceeeeeeeee [eeeeo *Caleulated using ratio of pamema activity skelelon/{tilia. "Tay post detonation. 5002184 a Dav 74 | and Spleen oocccccecccccet cccecccceeee Tt i 34s 46 Lures (Alveout!....100 437 a8 1 HEN #9 0.(3 rip 0.57 0% Ber 10. 4. - ~#0 4.0 862.6 OS | 3.0 6.3 3.0 _- 1.0 9.0 20 4g 7 — 4.000 - - — 14.2 40 re 3.3 £4 _ - _ 18.0 4§ «10.7 GC4p ~ _ MWe 14 $6 43 oe fo! = 1 4 Om elec a eee eee 0.75 o™ 07% WS _ — W 0.25 Ob _