a personnel from the various laboratories to conduct their own tests, Mr, Libby commented on the possibility of establishing the 10-year limit at 5 roentgens and transferring additional but not all shots to the Pacific, He then discussed with Dr, Dunning ways of revising firing conditions of continental shots in order to remain within a 5 roentgen level. Mr, Libby then said he believed the recommendations of ARC 141/33 should be approved and that the record of the discussion at the meeting should be a guide to the test organization in further study of operational means of limiting fallout, He also suggested that there should be further study of the practicality of establishing a 5 roentgen level for ao 10-year period and the effect on the test program of such a limit. Dr. Dunning said that he believed it was much easier to announce a 10 roentgen level and to point out later that this level had not becn exceeded vather than to explain why a more stringent 5/ roentgen level, if adopted, had been exceeded, |

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