INTERNAL DEPOSITION OF RADIONUCLIDES 71 Table 5.3.—Gross Beta Activity in Urine of Rongelap People on 46th Day Post Detonation ai)|"bhatttns MeelisG | Case No, Age < 5 yrs 2 3 5 23 33 54 69 Mean 712 894 313 4 7 9 634 1, 700 201 1, 677 2, 460 223 0 10 11 980 450 80 455 385 301 13 14 340 780 165 404 455 47 960 37 480 550 1, 450 46 49 52 330 425 780 495 0 0 55 56 Age 6-15 yrs 57 265 550 650 255 190 280 650 450 110 440 980 1, 900 0 1, 032 0 236 1, 100 1, 705 674 507 0 1, 180 439 758 549 1, 583 18 22 30 40 Mean 455 810 355 40 260 34 20 24 26 35 36 39 47 67 72 75 76 BataAoreviny ToraYouve] __ Age > 16 yrs 120 150 155 0C«* Case No, 58 60 62 63 66 68 71 73 78 79 80 82 Mean 750 320 1, 670 V7 438 570 792 1, O80 700 3, 220 750 2, 170 550 1, 095 810 980 635 855 300 290 230 965 465 540 670 580 1, 985 2, 260 1,715 2,010 1, 450 0 52 2, 038 1, 353 2, 140 581 1, 208 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 indicated that the alkaline earth and rare earth groups together contributed 75 percent of the