It is not appropriate to compare the results from the various tests without first considering the time periods between tests. For example, fallout from Bravo was not masked by later debris for about a month in the region of tests, and could be identified for an even longer period in regions remote from the test site. On the other hand, Union debris was quickly overshadowed by fallout from Yankee, which occurred nine days later. The world-wide distribution of fallout from Bravo is shown in Figures 3.3 and 3.4. Assigned to the burst was all fallout from the period from February 28 to April 5, 1954, with the exception of debris in a limited area which was determined to be from Romeo (See Appendix 4). The average activity of this fallout, corrected to 100 days after burst, was 1937 d/m/ft?, for a total fallout of megacuries, or ‘negacuries as of July 1, 195k. Figures 3.5 and 3.6 show the total Romeo fallout from the time of the bursts through May 3, 195k. ‘Theworld-wide average activity at 100 days after burst was 1145 d/m/ft* for a total of nega= curies, or tegacuries on July 1. No debris was assigned to the third burst, Koon. Fallout from Union (Figures 3.7 and 3.8) covers the period through May 12, a somewhat shorter period than the first two bursts, Yankee cumulative results are Debris was specifically attributed However, much of the fallout which originated from Yankee so that the much greater than the values given. given in Figures 3.9 and 3.10. to this burst through May 21. occurred beyond this period also total fallout is undoubtedly averaged 1219 d/m/ft*, for a total of megacuries. Through May 21, Yankee fallout megacuries at 100 days Corrected to July 1, 1954, this value becomes ' Nectar fallout is shown in Figure 3.11. Since this burst followed the powerful Yankee burst by only nine days, debris from Nectar is identifiable as such only for a few days and in the region near the test area. gthis fallout from Nectar amounts to a world-wide a| after burst. roa since Yankee was detonated only nine days after Union. -The world-wide average fallout wes 28) d/m/ft at 100 days after burst for a total of aegacuries, or megacuries on July 1. wee average of 81 d/m/ft“, or. wegacuries, at 100 days after burst, negacuries on July 1, 195k. - 22 @