@ Program 1, Blast and Shock; Projects l.la, 1.1b, l.lc, @ Program 2, Nuclear Radiation and Fallout; Projects 2.1, 2.2, 2.3, 2.5a, 2.5b, 2.6a, 2.6b @ Program 6, System Effects; Projects 6.1, 6.2a, 6.2b, 6.4, 6.5, 6.6 1l.ld 1.2a, 1.2b, 1.3, 1.4, 1.5, 1.6 Program 7, Electromagnetics; Projects 7.1, 7.2, 7.4 Program 9, Cloud Photography; Project 9.1. The instrument station locations on the islands of the atoll are shown 1 Figure 71. ‘2r 3. .ce 72. Details of the experimental projects can be found in Chap- The locations of the TG 7.3 ships at burst time are shown in FigAircraft participation is given in Table 29; the positions of rome of these aircraft at burst time are presented in Table 30. “ce Test The late checks of the weather/radsafe conditions indicated a more <avorable shot-time wind pattern than forecast (i.e., deeper southerlies in the levels between the trades and 55,000 feet [16.8 km])}. detonated at 0630 with a yield of 11 MT. nel and ships had no adverse incidents. ROMEO was The embarked task force personPostshot advisories were issued before H+30 minutes on 27 March 1954 to the Chairman, AEC; Army Chief of Staff; and CINCPAC indicating time of detonation and confirming personnel safety. The detonation produced a cloud whose upper limit reached an al- titude of about 123,000 feet (37.5 km) (surface to 6,000 feet [1.8 km]) speed of approximately 11.5 mi/hr (Figure 73). The lowest levels of the stem moved to the southwest at a (18.5 km/hr). The next higher level (to 20,000 feet [6.1 km]) moved to the west-northwest at about 13.7 mi/hr (22 km/hr). The upper levels and the stem moved out to the north. Outside the PPG, all levels probably moved out to the east except the lowest levels, which continued in a westerly direction. CONTAMINATION. 0903 (H+2:33) The first contact with cloud radiation was reported at by Wilson 3, flying at 5,000 feet (1.52 km) of the racetrack pattern. The next report at 0933 at the north end of the 255 et at the south end