=27- from the lens system, each contribute about 3% to the bone marrow dose and 1% or less to the whole body. Therefore, for Case 1, 94% of the bone marrow dose and 98% of the whole body dose are contributed by two pathways; terrestrial and external. For.Case 6, living on Bikini Island and diet from Bikini Island, the terrestrial and external gamma pathways contribute ‘85.6% and 13.7% of the bone marrow dose and 79% and 20% of the whole body . dose respectively. In other words, 99% of the total dose for Case 6 is the result of the terrestrial and external gamma pathways. The integral 30 year doses for bone marrow range from 6.6 rem for Case 1 (Eneu) to 43 rem for Case 6 (Bikini). The corresponding whole body doses are 5.0 rem for Case 1 to 29 rem for Case 6. As dietary remedial measures are taken on Bikini Island, that is Cases 2, 3, 4 and 5 which are variations of Case 6, the relative contribution of the exposure pathways to total dose changes. However, the pathways which contribute the largest fraction of the total dose continue to be the terrestrial foodchain and external gamma. A summary of the percent contribution of each pathway to total dose for each living pattern is listed in Table 31. The summation of the 30 year and 50 year integral doses for bone marrow and whole body for the six living patterns is listed in Table 32. The Eneu living pattern, Case 1, produces the lowest dose. Al] other living patterns lead to doses at least 3 times higher, and for the unmodified Bikini living pattern, Case 6, the doses are at least 6 times higher than for Eneu. It is clear, therefore, that Eneu Island provides, by a significant degree, the lowest dose living pattern at Bikini Atoll. “M5 009007