TABLE I ISLAND GROUPS AFFECTED Group* Composition Ronge lap Ailingnae Rongerik Utirik 64 Marshallese 18 Marshallese 23 Americans 157 Marshallese Fallout observed fleavy (snow like) iModerate(mistiike) Moderate (mistlike) None Estimated gamma dose (rads) 175 69 78 14 SE Ube cr *Also exposed were 23 Japanese fishermen aboard their vessel the "Lucky Dragon" who received a sublethal dose.