6.2 Project twmber: a ° opvorsor: 7.2 Title: [lesions USAF Project Officer: Detection of Airborne Low Frequency Sound from Atomic — ? err Mr. G. B. Olmsted —~ Objective letermine at long range the period, amplitude, velocity, and azinuth of acoustic waves from atomic explosions. 6.2.2 Erocedine Generally, the method which will be used consists of a microphone capable of detecting slight variations in atmospheric pressures (low frequency sound) caused by atomic explosions thousands of miles away. By placing’ several microphones in a pattern, and recording the "sounds" from: each separately on a time record, it can be seen that an azimuth, or the-direction of the explosion, can be determined. If several such stations, | great distances apart, each get an azimuth on the explosion, its position can be plotted by triangulation. Further, period, velocity, andamplitude can be determined. Stations will be located within and Without the United States. 6.3.1 Calibration Analysis of 4-Bomb Debris © Mr. W. Singleyich iterations ne eee Project Officer: At| USAF _ Tike: oN Svonsor: 7.4%, “aa Project Number: C 6.3 Objective To obtain data based on physical, chpriical, and radiochemical analysis of gaseous and particulate material yssociated with airborne atomic debris following the explosion of an tomic weapon. These data are used as calibration or reference points;fin evaluating similar data obtained by analysis of atomic debrig whose origin resulted from nuclear explosions of unknown origin, composition, and design. 6.3.2 Procedure Alamos Scientific Lah catory (LASL) Project 11.2. particulate samples is made by agreement Pivision_of“these iif All sampling aircraft will also be equippedwith gas sampling’ de devices which are engineered and installed , Materiel Command (AM), respectively. 42 by WADC and Air Division of gas samples will be