it was likely that another 75 rads of laboratory, or X-radiation, would have caused some deaths. The report concluded that the minimum lethal dose for ran was probably 225 rads in a fallout field. consistently, with acknowledgments, The "best estimate" figure was used for a period covering ten vears. In 1964, undoubtedly as a result of the first findings of thyroid nodules, a recalculation was carried out. This recalculation, by one Ralph A. James of the Lawrence Radiation Laboratory of the University of California, was interesting for two reasons. First, in earlier calculations of the fallout, the dose of the cloud passing over the island could not be calculated (1956 report). including the dose from the cloud. This review took into account the dose delivered as the radioactive particles passed over the islands. James, in his exposition, noted that the exact method of arriving Bea calculation was made, ered in 1964, because of evidence from tests conducted after 1958, a re- fe later, Ten years at the original 175 rad estimate for the people of Rongelap was "not given’ change or alter this amount for individuals who might have remained indoors, noted that the probable dose was 175 rads, plus or minus 25 rads. The second reason this recalculation was so important was because it dealt with and partially explained the reasons for the late development of thyroid nodules. This second aspect of the recalculation involved the amount or feeey ~~ 93 wir wo in allowing for factors which might owe then, Hanregee® James, orem rads, a total of 208 rads. al rads; cloud passage, 47 rads; and from the fallout during cloud passage, 47 woe 114 | from time of beginning to time of end of fallout, [ James' recalculation included dose received tae @ (based on 12 hours) (36, p. 79). eed from fallout" =o and that it apparently did not include "the dose from the cloud, but only ee