The estimated whole-Ledy gamma dose to natives evacuated fror the island of Utirik following the Mareh 1, 1954 detonation at the Facific Proving Oround vas about 15 roentgens for a but no beta burns appeared. period of about three days, It is fair to assuse here that direct sontanm ination took place due to their node ef living including housing that vas quite open te air currents. bodies of the native: boarding the shir. OGemae dose rate readings were taken over the at about H plus 78 hours both on the beash and after On the beach the persormel readings averaged shout 20 or/hr gama (but this probably included saze contribution from the ground contanination), and efter vading turough the eurf and boarding the ehiy the levels avereged 7 mr/hr gana. Tue 12 natives on Sifo Island, Allingicas atoll, reesived an estie watec whole-body gaxca dose of 75 roentgens in ebout two and a quarter cays. Cf tnese, lL, leter axperienced slight beta burns, 2, moderate burns, and none showed erilstion. In the case of the Rongelap natives, the estimate? vholeebody dose was about 152 reentgens in about two days. fenee? beta burn: to sore decree Al) 64 native: later exper~ from slight to severe andover half of the natives showed eriletion from slight to cevere. The 16 natives from Rongsla; evacuated cirectly by air to Ewajalein had personnel gamra dese-.:te levels generally €9 to 100 ar/hr although one war as high as 240 mr/hr and one es low as 10 er/hr (at F plus 55 hours). shout The remaining 45 native> evacunted by ship were reported to hove personnel readings that Maveraged" 60 nr/tr before fecontarination. UNCLAS ASei E tren sata