range of weight from 1.9 to 3.1 grams for the children, which gave a "most probable" dose which ranged from 685 to 1445 rads, (including whole body radiation) and which was much higher than the 150 rep. figure first used. Exposure to Residual Radiation A third general area about which the Committee is concerned will be noted here. This is the amounts of radiation the Rongelapese, and to a lesser extent the Utirikese, were exposed to after being returned to their islands. There was radioactivity remaining from the "Bravo" shot in 1954 which was taken up into the ecological systems of the atolls and also additional radiation of these areas from later nuclear weapons tests. As noted earlier, the Rongelapese were kept from their island over three years and the Utirikese three months. The Rongelapese were returned on June 29, 1957, 26 days after they had been evacuated. Narver, Previous three years, three months and to their return, Holmes and at a cost of $348,375 to the AEC, had constructed a new village on Rongelap. However, it was virtually impossible to remove the radioactivity in the soil, plants, and crabs on the land and from the fish, and other fauna and flora of the lagoon. In addition, the Rongelapese and Utirikese were exposed to radiation after their return as a result of additional tests in the area, especially from the "Redwing" series which included the explosion of thermonuclear bombs in the megaton range. As to the residual radiation remaining from "Bravo", the BNL three-year report indicated that from external sources "the dose rate at the time of repatriation (July 1957) would be less than 30 mr/week and at 1O1 Gap 9010368