LIST OF ILLUSTRATIONS Figure Illustration of approach Relative location of atolls and people Curve fit of archival soil results Activity vs granule diameter for Bikini ash Cumulative 2 of activity deposited on the 5th Lucky Dragon vs time post-BRAVO 15 24 detonation 26 Activity vs granule diameter for Rongelap Island fallout 26 Cumulative 2 of activity deposited on Rongelap Island vs time post~BRAVO detonation 26 Activity vs granule diameter for Utirik Island fallout 27 Cumulative 2 of activity deposited on Utirik Island vs time post-BRAVO detonation 27 10 Exposure~Rate histories for Rongelap, Sifo, and Utirik based on Bikini ash characteristics 40 11 Integrated exposure vs time 40 12 A cistern at Rongelap Island 41 13 Photographs of food preparation techniques and living patterns at Rongelap and Utirik Islands 47 - xi -