a, SECRET. a. Secure from DOD a reaffirmation of its requirements for the FIR, with assurance of support tothe AEC vis-a-vis the BOB, Both AEC and DOD may continue investigations of alternative sources, as desired, but not to the detriment of the FIR project; or, b. Alternatively, secure from DOD a release from the AEC commitment to provide a reactor gamma source, with AEC agreeing to assist the DOD in exploring the possibility of obtaining a gamma source other than a reactor, III. OPERATION HARDTACK (Suggested by AEC) 1. By letter of August 13, 1957 (AEC 952/13), the Commission advised the Secretary of Defense that the President had approved commencing Operation HARDTACK on April 1, 1958. This letter also pointed out that the President expressed doubt as to the necessity for the number of shots, approximately 25, we had indicated as probably necessary, and directed that planned firings be screened and held to the smallest number practicable without losing essential defense objectives. 2. The directors of the weapons laboratories are scheduled to brief the Commission on their HARDTACK shot proposals on October 22, Subsequently, it is suggested that the HARDTACK program be considered further at the AEC-MLC meeting on October 24, In addition to the necessity for holding the number of shots to a minimum, continued effort is being given to reducing the result-~ing world-wide fallout. 3. Also of immediate interest is the possibility of Foreign Observers, The President, in his press conference of July 3, 1957, while discussing clean weapons, stated that if another test is made, he would invite other countries to observe such tests and to determine the resulting fallout. On September 19, Secretary Dulles, in his speech before the United Nations General Assembly stated, "We shall invite the United Nations to send observers to one of our next tests so that they can see how these tests are We are currently considering what proposed shots - S ae conducted," 5 -

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