OFFICIAL USE ONLY (b) "HARDTACK test series" means that series of nuclear tests to be conducted by the Atomic Energy Commission and the Department of Defense at the Eniwetok Proving Ground located within the above defined danger area and which are to begin in April 1958, and end at an announced time during the calendar year 1958, Sec, 112.4 Prohibition. No United States citizen or other person who is within the scope of this part shall enter, attempt to enter or conspire to enter the danger area during the continuation of the HARDTACK test scries, except with the express approval of appropriate officials of the Atomic Energy Commission or the Department of Defense. Sy tae NE AS yo ts PAN RIT A Cup i CUAL, (CS CINE Ni

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