©. FICIAL USE ONLY AERIAL SURVEY PROGRAM, Mr. L. J. Deal, Chief, Civil Effects Branch, DeM, brought the group up to date on developments in the joint AEC-OEP study on Federal response to an accident involving a nuclear site. In August, a detailed document describing the organization directly responsible for protective actions and identifying the AFC capability will be avail- able. He then described the Aerial Radiological Measuring System which is available to respond to accidents at any nuclear site. He also described the work under the Division of Military Application auspices for responding to weapons accidents and its possible application to ARMS program for using aerial measuring techniques to monitors for Pu-239. FINDINGS OF ATOMIC BOMB CASUALTY COMMISSION, Dr. Seymour Jablon, Associate Director of the Follow-up Agency, Division of Medical Sciences of the National Research Coancil, and Chief, Department of Statistics, when in residence at the Atomic Bomb Casualty Commission, Japan, reported chiefly the most recent mortality data derived from the 1966-1970 collection cycle. He concentrated on the Life Span Study which involves the survivors themselves rather than to studies of the offspring of the survivors which are also going forward. In general, there seems to be developing an increased risk of cancer in those surviving the higher dose levels, whereas the morbidity for other diseases such as tuberculosis, stroke, or other circulatory diseases is not increasing at present, The morbidity data in the two cities do not always coincide perfectly. The patterns of morbidity and mortality are continuing to evolve as the population ages. Since very few of these current observations have been previously reported, a precis of Dr, Jablon's presentation is included as an Annex, Since the presentation was made with reference to tabular data on slides, the observations have condensed into brief, possibly overly categorical statements evident in the numerical data. Dr. M. A. Bender, lhiology Branch,DBM, discussed the proposed genetic studies at ABCC. He briefly reviewed previous attempts to measure radiationinduced mutation rates in the offspring of the ABCC -populations exposed at Hiroshima and Nagasaki. He then outlined a new proposal by J. V. Neel and W. J. Schull of the Department of Genetics of the University of Michigan Medical School to initiate a new study in collaboration with ABCC. The proposed study wiil search for newly arisen protein variants among the F,, presumably duc to mutations induced in the germ live cells of the exposed parents. Neel and Schull propose to screen a battery of some 25 suitable serum and erythrocyte proteins, augmented by additional proteins as methods become available. They estimate that at a minimum some 11,000 children of "exposed" parents and abou 22,000 children of "unexposed" control parents can be studied. Making conservative estimates of the human spontaneous mutation rate amd the mean parental radiation doses, they feel that they can probably demonstrate a statistically significant radiation-induced increase OFFICIAL USE ONLY