he was a member of the AEC's Radiation Instrument Branch until joining the then newly created civil defense agency in 1951. Since that time Mr. Greene has been associated with civil defense related technical and scientific activities including radiological instrument development, nuclear weapons test programs and other research. From 1962 through 1973 he headed the Postattack Research Division which included responsibility for civil defense fallout studies. Currently Mr. Greene is DCPA's Deputy Assistant Director for Research, Jerome L. Heffter received his M.S. degree in meteorology at MIT in 1960. He is presently a research meteorologist with the Air Resources Laboratories, NOAA, and is engaged in modeling atmospheric transport and dispersion of pollutants on local, regional and global scales. Mr. Heffter has been involved in fallout prediction research since 1960 and in U.S. nuclear test operations (atmospheric and underground) since 1962, John C. Phillips is the Defense Nuclear Agency's fallout project officer. Captain Phillips is a U.S. Army Ordnance Corps officer and has been with Headquarters, DNA, since October 1971. Captain Phillips received his M.S. in nuclear engineering from Purdue University in 1967. Richard Park received a B.S, in Mechanical Engineering from Yale University in 1931. In 1958, after 11 years in the Office of the Secretary of Defense with the Research and Development Board and the other agencies that preceded the Director, Defense Research and Engineering, he joined the staff of the National Academy of Sciences where his primary assignment has been as Technical Director of the Advisory Committee on Civil Defense. Although Dr. David Bensen of DCPA was not a ''formal" member of the Subcommittee, he attended several of the meetings and was responsible for the preparation of certain background material to serve as input for committee discussion and deliberation. His very substantial contribution is acknowledged with thanks. Also the help of Mr. Costa Telegadas, a colleague of Mr. Ferber and Mr. Heffter at NOAA, is gratefully acknowledged. rq rs pe ,: ' p: } rs rs r4 = ry pea II-4