SWRW 26 February 1957 ‘ OPERATION HARDTACK Operation HARDTACK is scheduled to be held in the Pacific in the Spring of 1958, The following devices are tentatively planned for inclusion in Operation HARDTACK by the AEC laboratories. It should be emphasized that this is the first information available relative to this operation; therefore, this schedule should be considered as very preliminary and will probably chance considerably before a final prorram is established. < 3s <o Ss AFWL/ HQ Inclosure 3, rage 2 ! yi AL