cee ye eaten edhe ntean neaNEe could be made available at the Pacific Proving Ground, Edgerton, Germesheusen and Grier, Inc., are prepared to take the associated photographs. A detailed proposal from NOL on this measurement is being awaited. PROGRAM 7 LONG-RANGE DETECTION Experiments conducted during Operation Tumbler-Snapper verified again the existence of tne electromagnetic disturbances associated witn a nuclear detonation. It was algo shown that these signals are such tnat they are capable of reception at considerable distances. Further measurements at Operation Ivy are necessary to determine tue characteristics of the signal and signal-receiving equipment which may be used in longerange detection of foreign nuclear explosions. in planning for Operation Ivy, Program 7 will establisn a small detacoment in the tniwetok area to provide necessary liaison with Task Force agencies and to collect and transmit data to AFOAT=1 neadquarters in Wasnington. In addition, the detachment will meintain a current presentation of certain elements of the normal Atomic Energy Detection System operations which are of interest to JTF 132 and will prepare sucn routine and special reports of this data as are required. Since the principal onesite efforts are in connection with the processing of samples collected by the aircraft operations of TG 132.4, the principal headquarters of Program 7 will be located at Kwajalein. This group will have a four-fold mission; (1) processing BEST AVAILABLE Copy