71 INTERNAL DEPOSITION OF RADIONUCLIDES Table 5.3.—Gross Beta Activity in Urine of Rongelap People on 46th Day Post Detonation caeno, ThiWat) PRAaaa | ' \ Age < 5 yrs 2 3 5 23 33 54 69 Mean 120 / | 712 150 155 40 260 80 455 165 | | 404 | | | | ; 22 30 34 37 40 46 | 52 ‘| 20 24 26 35 36 39 | 265 550 650 ass | 1,900 0 1, 032 0 | 58 60 62 63 66 280 1,100 71 ' 190 286, | 650 450 110 | 1,705 674. 507 76 | 980 =| 1, 180 Mean | 439 | I 440 | 0 “! 738 ! \ | | | | 49 55 56 47 67 72 75 18 : ‘ Age 6~15 yrs | | | | | 4 7 9 10 Li 13 14 | I TERGaench®) Pola ~~ Age > 16 yrs 394; 313 2230 0 | 385 301 erate | | | Sasewo 73 78 79 80 82 Mean 634 1, 700 201 549 1, 583 1, 677 2, 460 4550/1670 47 77 960 = 438 750 570 480 | 792 5501, 450 330 | 495 425 : 0 | 1, 080 (3, 220 780 320 700 57 68 455 810 | 355 980 450 | 340 780 550 | | | | 750 810 980 685 $8 | | 200 | 300 0 1, 095 2, 170 580 1,985 |, 260 | 1,718 2, 010 1, 450 230 | 965 | a) | 0 52 2, 038 | 540 | 1, 353 670 ; 2 tO 381 | 1, 208 I _Values corrected for decay. No correlation was found between body weight of the people from Rongelap and the total activity per 24 hours excreted in their urine. Gross beta activity measurements were also made on the samples sent to NYOO, AEC.* Their results essentially corroborate the find*Personal communication from Dr. J. Harley, NYOO, AEC, ings by the USNRDL, particularly the ratio of the activities among the three groups studied. The absolute values of the activity determined by NYOO-AEC, however, were lower than the USNRDLvalues by a constant factor. 2. Radiochemical Analysis of the Urine: Estimate of Body Burden. Radiochemical analysis of the Rongelap urine samples indiented that the alkaline earth and rare earth wroups together contributed 75 percent of the