6 January 1958 Operation Plan 1-58 for HARDTACK rrovided Task Group 7.4 elements a firm basis for detailed planning activities, 28 April = 1958 YUCCA Shot, launched by balloon, initiated Operation HARDTACK series when it fired approximately 60 miles northeast of Eniwetok, 30 October 1958 31 October 1958 TITANIA Shot, safety experiment fired from a 255-foot tower. This was the last shot of Operation HARDTACK, Phase II, President Eisenhower's nuclear test moratorium to become effective for one year, 2h September 1959 SUNDAY PUNCH, continuing world-wide Sampling. 7 January 1960 GOLF BALL, 8 July 1960 KIWIPRIME, Jackass Flats, Nevada. 22 August 1960 MUSIC MAN. 10 October 1960 KIWI -A THREE, | 16 August 1961 926th Test Squadron (Sampling) transferred to Military Air Transport Service and redesignated 1211lth Test Squadron (Sampling). x APWLJHO SWEH~2-003) \A