Here is a 2 Mar., 1960 transmittal letter from Air Force BSD and specifically Qt: -.--+s ~ Col. Harry Evans, Chairman of the Vela Joint Working Group. The rough draft of my ¢ 4 - this plan is put out by Headquarters ARDC and is entitled "Project Vela Hotel, ARPA Order No. 102-60." The historical section of the report gives the names of the panels who have addressed the question of nuclear test detection and says that the Panofsky panel investigated the detection of nuclear explosions occurring between 50 kilometers and 300,000,000 kilometers from the earth. Furthermore, "On 23 April.59, Dr. Killian, Secretary Quarles, and Mr. McCone met to discuss implementing recommendations of the Panofsky panel. Agreement was reached on the assignment of responsibility for the high altitude detection program. It was - decided that the Department of Defense (DOD) would accept overall responsibility for continuing instrumentation development and engineering with the cooperation of the AEC for nuclear detonation aspects, and NASA, measurements. for radiation background The ARPA was subsequently assigned the responsibility for a progran involving the investigation of the detection of nuclear detonation underground, at the earth's surface, and in outer space. ARPA Order No. 102-60 directed AFBND to investigate a system of ground stations and satellites for detecting nuclear detonations above 50 kilometers. The study was completed in Oct. 1959. ARPA Order No. 102-60 Amendment 1 directed AFBND to further investigate satellitebased detection system. As a part of this study, ARPA requested that a development plan be generated for a research and development program leading to the definition of a satellite borne detection system. The plan was to be written by a Joint Working Group including members of the AEC, NASA, and ARDC. To facilitate writing the plan separate sub-committees for payload, space booster, and communications and control were xexfsxmed formed. This development plan for Project Vela Hotel,

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