NEVADA OFFSITE RADIATION LEVELS the Nevada Test Site should be as follows: a. (continued } The current criterion of 3.9 roentgens for any one year; plus an additional restriction of bh. 10 roentgens in a period of 10 years, with the first of the successive tenyear periods starting in the spring of 1951. These should be construed to be operationa: guides rather than maximum permissibie jimits, since exposures somewhat in excess would not be hazardous. The above summary is approved in view of the Committee's opinion as to the necessity for continued weapons tests. The resolution was passed unanimously by the Committee. DR. FALLLA ther introduced the subject of Project Sunshine. He revievel particularly the work done to date, the reports by Ir. Libby and Mr. Eisenbud. He also reviewed the basis on which the maximum permissible body PROJECT SUNSHINE burden of Strontium 90 was established. Dr. Libby Aas suggested an estimated ultimate burden of from 4 to 1Ogdgecuries Sr-9O per garam of Calcium . as the average for the U. S. and tr. Eisenbud has suggested 25 as the average for North Dakota in wrich the fallout has been higher than for the rest of tne UU. &.. An extensive discussion followed in term: of tne upteke and distribution of Strontium 90 in different parta of the world and its relationship with the known effects of radium in the body. DR. FAILLA pointed out that the values suggested by Dr. Libby and Mr. Eisenbud appeared to be in reasonably good agreement and were based upon the best information available to date. There was much evidence to indicate that the accepted maximum permissible body burden might be too conservative. He did, however, point outthat the Commission was under obligation to use the nationally accepted limit. It would, however, not be wise for the-Commission to suggest a revision of the limit, since its motive i 6 ped mM might be questioned.