“the most recent information. Immediately after reading your statement, I sent you a copy of a speech which I gave re- cently regarding what we know from scientific studies on fallout radiation and its effects, JI am enclosing with this letter a copy of a paper which I am presenting on April 26 before the American Physical Society. I hope these documents will be of use to you. They demonstrate that an intensive effort has been made to calculate on theoretical grounds, and to determine from sample collections, the actual levels of radioactivity in the soil, in water, in food products, and in human bodies as a result of weapons tests. If you have gained the impression that United States official statements do not take into account the possible hazard from internal radiation -- and I fear from your statement that you have -— I hasten to assure you that this is not the case. Government statements have dealt extensively with this matter. It has likewise been considered at length in a report. prepared by scores of eminent scientists for the National Academy of Sciences, and in England by the British Medical Research Countil, both reports appearing in June of last year. Particularly since the summer of 1953, the Atomic Energy Commission has conducted an intensive study of worldwide fallout which has revealed most of the information now available on this subject. These studies have included analysis of soil, plants, foods and other materials from many parts of the world. The United States Government has furnished this information without reserve to the United Nations Scientific Committee on Atomic Radiation, which was established at the recommendation of the United States and which, has studied data provided by other countries. Although there are some differences in the findings of scientists in this country and abroad, there is general agreement upon the approximate magnitude of the fallout and the rate at which it is descending from the stratosphere. Perhars there is less agreement about the magnitude of the echysiological effects which can be expected to resuit from fallout radiation. Nevertheless, it is very generally agreed, among those who have studied the question, that the radiation exposures from fallout are very much smaller than those which (more)

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