27 maximum accumulation of strontium-99. This maximum dose rate in the teenagers was received by individuals who were 10 years old at the time of attack. Again, let me emphasize that in the SRI water study and the Isotopes food study, no countermeasures or preacutions were assumed to have been taken. Now, what seem to be the requirements for countermeasures and what would be the difficulties in instituting them? For two of the radionuclides -- iodine and strontium -- it would appear prudent to have standby countermeasures for implementation when and if needed. Of the two, the iodine countermeasure problem seems far easier to solve since it would exist, at most, for a few weeks postattack, and iodine appears to be an important hazard only as a contaminant in water or milk. Its short half-life precludes its becoming incorporated in most other kinds of foods. other fallout radionuclides, easily could be cleaned off. very important. Although iodine, with the could be deposited on plant surfaces, it Inhalation of iodine is not considered to be Although some sublimation would occur, test experi- ences have indicated that the resulting concentrations of iodine vapor would not be dangerous. The iodine hazard would be limited essentially to the very young; thus a desirable policy would include selective z=

Select target paragraph3