children, Table 226a. Estimated time distribution (in percent) for men, women, Pattern A. and infants, with emphasis on residence island, Village area Beaches Interior Lagoon Other islands Men 50 3 15 10 20 Women 60 10 10 0 20 Children 55 10 15 D 15 Infants 85 5 0 0 10 lens water, where available, will not bea samples, inhalation doses to bone, liver, significant part of the diet. and lung for each of the six living patterns have been estimated and are shown in D.shalation | Tables 228-230. The 'unmodified'' cases represent | 239, 2405, has been found to be the only significant contributor to inhalation calculations based on the 239, 2405, con- doses on Enewetak Atoll, tent of the top 2 cm of soil, while the Airborne ''modified'' cases represent calculations radioactive species observed during the survey, however, were identified as based on the average 239, 2405, content originating almost entirely from world- of the top 15 cm of soil. wide fallout or cosmic-ray activity. condition would obtain if the soils were In The latter order to make a conservative estimate plowed or mixed during the replanting of inhalation dosages, operations. it has been assumed that the returning population will D external gamma be exposed to air with an average dust Using gamma levels obtained from loading of 100 ug/m?, with the same 239, 2405 content as the local soil, all the aerial survey, estimates of the ex- 0.4 um in diameter and low in solubility. ternal gamma dose associated with each Using these assumptions and 239, 2405, concentrations obtained from the soil of the living patterns have been calculated (Table 231), In this table the "unmodified" Table 226b. Estimated time distribution (in percent) for men, women, children, and infants with emphasis on additional time spent on nonresidence islands. Pattern B. Village area Beaches Interior Lagoon Other islands Men 40 5 20 10 25 Women 50 5 15 5 25 Children 50 5 15 10 20 Infants 70 3D 9 0 20 [I-39