1) . . the dietary intake of 137 . . . Cs was a major component contributing to the committed effective dose equivalent for the years after the initial contamination of the atolls, 2) . . : 65 : for persons whose diet included fish, Zn was a major component of committed effective dose equivalent during the first years post return, 3) a decline in the daily activity ingestion rate greater than that . . . . resulting from radioactive decay of the source was estimated for 137 Cs, 65 Zn, 905, and 6060, 4) the relative impact of each nuclide on the estimate of committed effec- tive dose equivalent was dependent upon the time interval between initial contamination and rehabitation, and 5) the internal committed effective dose equivalent exceeded the external dose equivalent by a factor of 1.1 at Utirik and 1.5 at Rongelap during the rehabitation period. Few reliable 239 Pu measurements on human excreta were made. of the tentative data leads . An analysis to the conclusion that a reliable estimate of commit- ted effective dose equivalent requires further research.