6U T 108 c 3 if T T Tale - * AEC TEAM r r — al SS)(es €or 1954 - « TYPICAL MARSHALLESE T ——e| ee] [RAREEaATHGNOUP-pe] —< c HIGH Cs MARSHALLESE 4 3 qn 5 4 t 4 dhe | l 10 Hoot oy | | 20 30 i 40 L 653, Wy” 50 60 | Oy , 670 OPERATION REDWING MICROCURIES OF CESIUM 137 E 10 | q qd 2 BACKGROUND . i COUNTS PER CHANNEL IN 30 min | Ca-I37 fm in-es ) sr-90 (000) w~ RETURN TO ROMGELAP 1 1 4io7* | Ld 4 80.690~—C—é=*='00 CHANNEL NUMBER 965 EXPECTED BODY BURDEN BASED ON PHTSicaL DECAY OF 1981 LEVEL 8-90 (008) | Ce-60 Cools) Figure 69. Unprocessed gamma-ray spectrographs obtained with an 11%-in. Nal (TI) crystal in a shadowshield whole-body counter. The channel width was 20 1 Ol keV. Traces of '*’Cs and °°Co are apparent in the back- 02 63 04 we O58 06 OF Figure 70. Estimated body burden ofisotopes in Rongelap people at various times since 1954. Values obtained either by gammaspectroscopy or by radiochemical analy- ground spectrum. Theright-hand scale was obtained by calibration with a “standard man” phantom and requires correction for other bodysizes; it is adjusted for the '*"Cs peak. sis of urine. Tabie 26 Summary of Radionuclide Body Burdens of Rongelap People, 1965, Obtained by Whole-Bodv Counting People residing on Rongelap Atoll Male Age <1] ‘Cs (nCi/kg body wt.) Exposed Unexposed Mean Unexposed Mean 14.0 199 +43* 18.1 204 2 72 20.4 Co (pCi/kg body wt.) Exposed Age 11-15 : Potassium (g/kg body wt.) Exposed Unexposed 26.5 30.7 217.6 30.7 315 #7.3 29.9 242+ 0.42 Mean Number of peopie Exposed Unexposed 2.42 Total 2.19 2.09%0.20 2.12 A Age >15 Age <1! Age il-15 Age >15 17.1 + 5.3 147 + 49 15.5 15.2 + 54 15.2 16.3 15.9 16.1 11.6 = 5.0 11.0 + 3.8 11.2 28.7 40.0 +31.3 40.7 11.4 37.6 +138 38.6 1.97 0.24 1.88% 032 1.91 27.0 +15.6 27.0 242> 0.44 2.42 28.9 28.8 1.92 1.81 1.86 31.2 411.2 34.7 152+ 0.39 145+ 0.22 1.48 Rongelapess US AEC residing medical at Ebeye 0.89 42.6 1.68 21 3 1 15 30 21 6 7 18 27 3 2 21 16 45 21 13 45 7 *Standard deviation = / Lix’) - (=) . V Female NV tcam . Trust Temton medica team G.16+O011 UF 0.0 ao 1.50*+0.18 1.61 9 2