° . sy and agreed that he should discuss with the DOD the question of cancelling the shots as well as the use of JI if the shots are to be carried out. The subject DOD concurrence on the alternative location and a final Presidential determination, the AEC would proceed with plans for the - high altitude tests at Johnston Island.'' Also entering into the discussion was the fact that the Army had already launched the satellite which was to make certain measurements and that a time delay would lead to the possibility of it not operating when needed. Other items at these meetings included Floberg's comments ona recently detected but uidentified seismic signal which demonstrates the difficulty of certain identification of each Soviet test and he suggested that Senator Humphrey be apprised of these reports and their relationship to establishing a fool-proof weapons test detection system ''Senator Humphrey, he recalled, had been urging that U.S. agree to a suspension of nuclear weaponstest based on a world wide system of test detection."' Also, in the lApril meeting, '' Mr. Strauss referred toa press conference held earlier in the day by Dulles, and said that Dulles had commented on recent "White House consideration of a possible statement regarding cessation of nuclear tests in anticipation of the USSR statement on this subject." Supreme Soviet of USSR approves decree March ° discontinuing all nuclear weapons tests in Soviet Union and calls on US and UK to follow suit. USSR reserves right to resume tests if security is threatened. . Fe -