arBR rw wr (reeee PREP Fe eapeme rm 7% At > rom efdltr’# resi ATA March 27, 1958 Science and Technology The White House a ie 3 Washington 25, D. C. . . ‘ LSpma 2 Dr. James &. Killian, Jr. Special Assistant to the President for “Sena t Dear Dr. Killian: We submit herewith for transmittal to the National Security Council the report of the Ad Hoc Working Group on the Technical Feasibility of a Cessation of Nuclear Testing established in accordance with NSC Action 1840 c. . The report is concurred in by al! members of the Working Group which included representation from the President's Science Advisory Committee, Department of Defense, Atomic Energy Commission, and Central Intelligence Agency. Hans Bethe, Cornell University Chairman Thalesg Fad ee 1FRYI Trey mt TET bay renee Te wer i at vyt‘ wad “ 2 Oe Brig. Gen. Alfred Starbird, Atomic Energy Commission Col. Lester Woodward, USAF Herbert York, University of California Radiation Laboratory and Advanced Research Projects Agency, Department of Defense aa Tiee gee : at Laboratory Doyle Northrup, AFOAT-1!, USAF Herbert Scoville, Jr., Central Intelligence Agency Roderick Spence, Los Alamos Scientific Laboratory or Carson Mark, Los Alamos Scientific t Herbert Loper, Office of the Secretary of Defense 35 eet Harold Brown, University of California Radiation Laboratory Maj. Gen. Richard Coiner, USAF