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 A). The average activity of this fallout, corrected to 100 days after burst, was 1937 a/m/f2, 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, 195. -The,world-wide average activity at 100 days after burst was 145 d/m/ft* curies, or iegacuries on July 1. the third burst, Koon. for a total of negs= No debris was assigned to Fallout from Union (Figures 3.7 and 3.8) covers the period through May 12, a somewhat shorter period than the first two bursts, Since Yankee was detonated only nine days after Union. -The world-wide average fallout wes 28 d/n/ft at 100 days after burst for a total of Aegacuries, or magacuries on July 1. Yankee cumulative results are given in Figures 3.9 and 3.10. Debris was specifically attributed to this burst through May 21. However, much of the fallout which occurred beyond this period also originated from Yankee so that the total fallout is undoubtedly much greater than the, values given, Through May 21, Yankee fallout averaged 1219 d/m/ft*, for a total of megacuries at 100 days after burst. Corrected to July 1, 195k, this value becomes Megacuries. : 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. This *allout from Nectar amounts to a world-wide average of &1 d/n/ft?, or. wagacuries, at 100 days after burst, negacuries on July 1, 195). - 22-