detonation ended the operation phase of CASTLE. oo The final sequence of snots was as follcws SEQUENCE ~ DEVICE DATE DETONATED EST IMATED YIELD INMI 1 i March 15.0 = 1.5 2 27 March 31.0 , 1.0 3 7 April 0.13 : 0.03 4 26 April 7.0 0.7 2 5 May 6 14 May r 15.5 f 1.0 1.7 a 0.3 Under the revised concept of the two-atoll capability fcllow- ing the detonation of SH07 2, it was possibile that there would be very short intervals between shots. This caused concern in the Air Force Task Group for post—shot maintenance and decontamination of aircraft had to be accomplished befcre aircraft could be employ- ed for the following shot. CTG 7.4 pointed cut that in order to have a fuil sampling effort, at least a thres—day interval was nec-~ essary. Any reduction in this length of interim time between shots ‘would mean that the sampling effort wouid have to be halved. If this condition was acceptable to the scientists, a one-day interval seemed possible. As it turned out, weather conditions did not allow intervals so short as to cause such a diffisulty for the Air Force Task Group but such a capability did have to exist under the plan established after swe7 2. The general problem of maintenance was cne which made the shot period a difficult period for TG 7.4. 1,0 Mary maintenance deficiencies