On the basis of this investigation, the following islands are extremely unlikely to have received fallout from the Bikini or Enewetak tests at levels higher than the background exposure of 200 mrem/year: Wotto Ujae Lae Lib Majuro Namorik Kusaie polka otje Erikub *Haloelap Arno Kiti Kwajalein . Aur Namu Jabwot Ailinglanelep Mi7i Narik daluit Ebon and any other islands circumscribed by the above. The following islands may have received some falldbut from nuclear tests. It is unlikely that the intensities would have resulted jn an exposure of more than 2 rem the first year; subsequent annual exposures would have been less than background: Jemo oS Ailuk Mejit The following islands did receive fallout with intensities ranging from 1 to 2000 R/hr at l hr. They are listed in estimated order of decreasing residual activity: Rongelap Taongi (based on cloud drift only - no survey data available) Rongerik Ailinginae Bikar Utirik Taka TT. CONCLUSIONS The above estimates, even when corrected for soil migration, can only be considered preliminary; they are very likely to be upper bounds. Wote that only Cs!?” has been considered. The addition of sr20 (a beta-emitter) and £09 (which results from weapon debris activation) are necessary in completing the estimates of the total activity present. es 308971