~wst SE CREF--8- resulting from a total suspension of nuclear tests, (b) a symmetrical study of the losses to the USSR, and (c) a study of the technical feasibility of monitoring a test suspension. The Panel also recommended a second study covering the technical factors involved in monitoring a long-range rocket test agreement. The substance of this report was conveyed to the National Security Council on January 6, and the studies of nuclear test cessation and monitoring a rocket test agreement were directed by the President. 20. Nuclear Test Cessation Study As requested at the January 6, 1958, meeting of the National Security Council, a nuclear test cessation study was undertaken by an Ad Hoc Working Group under the chairmanship of Dr. Bethe with representatives of the AEC, Department of Defense, CIA, andthe PSAC. The Working Group considered the technical feasibility of monitoring a test suspension and the losses to the U. S. and USSR of such a suspension. The report of this Working Group was submitted to the National Security Council on March 28, 1958, without recommendations. 21. Puerto Rico Report Following the submission of the Nuclear Test Cessation Report, the Science Advisory Committee met at Ramey Air Force Base in Puerto Rico on April 8, 9, 10 where the implications of the report were dis- cussed in detail. As a consequence of this discussion, a report was prepared by the Committee which numbered among its conclusions the statement that a test cessation agreement would leave the U. S. ina position of technical superiority for at least several years, a position which could not otherwise be maintained. The Committee believed that it was greatly to the technical advantage of the U. S. to obtain a satis- factory agreement for sustained test cessation as soon as possible after the completion of the Hardtack tests. This report was trans mitted by the Special Assistant to the members of the Cabinet Committee on Preparations for a Summit Conference on April 17, 1958. In late April of 1958 a diplomatic exchange was initiated which led to the meeting in Geneva during July and August 1958 of the Conference of Experts to Study the Possibility of Detecting Violations of a Possible Agreement on Suspension of Nuclear Tests. The Chairman of the delegation was Dr. Fisk of the FSAC. Two other members of the PSAC ’ SECRET AGVaAGLL AAMVHNAD LS U WHIM. did bE UdUUIUoddsa 22. Geneva Conference of Experts on the Technical Aspects of Suspension of Nuclear Testing Warm ee (neh tataDR haa ham

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