Project 6.6 -- Effects of Nuclear Detonation on the Ionosphere Agencies: Signal Corps Engineering Laboratories 947lst TSU Operations: (SCEL) Ionospheric recorders were set up at Enewetak [Parry Island) and Rongerik atolls in the Marshalls and at distant locations. Following the fallout from BRAVO, operations at Rongerik we re cur- tailed; recorders were started before each shot and left to operate unattended. Shots: All. Although the potential for e posure ap- Radiation Exposure Potential: ~ < s, z a peared quite low, owing to the remoteness of the stations, he actual exposure turned out to be high at Rongerik because of BRAVO Staffing: Five people were definitely associated with this project, one civilian and four military. Three of the military were the en- listed personnel of the 947lst TSU who were on Rongerik and were ex- eA, . os) pIAs. posed to the BRAVO fallout. They were assigned an exposure of 98 R in Reference 13 based upon a badge on a tent pole in their wor f area, but based on later research the exposures were reduced to 78 R (Reference 68). Project Report: Reference 74. Burst Detection Studies Program (Program 7) This program conducted a variety of experiments in nuclear #xplosion electromagnetic pulse generation, airborne low-frequency sound,fJand col- lection of nuclear weapon debris. Project 7.1 -- Electromagnetic Radiation Calibration Agencies: National Bureau of Standards (NBS) Naval Electronics Laboratory (NEL) Signal Corps Engineering Laboratories (SCEL) 1009th USAF Special Weapons Squadron 197