WEAPONS > The following new feasibility studies were initiated; 1. Warhead for the improved MB-1 rocket, 2. Improved warhead for the ICBM’s, Atlas and Titan, and 3. Werhead for the Minuteman, an Air Force solid-propellant ICBM. WEAPONS TESTING Operation HAPDTACK The first nuclear test of the HARDTACK series was conducted on April 27. Thirty-two tests had been conducted by August 11, as follows; ' Shot name and device Date fired Yield Expected April 27 Actual (Preliminary) es 7D ———— Objective Very high altitude effects test 16.6 kt. _ . DELETED 1.75 mt. 1.3 mt. Effects - 4 hae MAGNOLTA ” toe May 29 = 3 May 30 ° - 5 4 : - May 26 ~ 4 June 2 oa7 4 x “ F3 I a cs 2, J Dy