SECRET, ta This document consists, of Copy No. a 22 of 2 ee 17 pages Series AEC-A- #—G—-R-E—P SECURITY INFORMATION iH ‘SPECIAL ASSISTANT TO THE SECRETARY OF STATE -WASHINGTON October 27, 1952 MEMORANDUM FOR THE FILE SUBJECT; Advance Notification to the United Kingdom and Canada of United States Atomic Tests By memorandum of October 13, 1952 I requested the views of the Department of Defense and the Atomic Energy Commission on the question whether the United Kingdom and Canada should be given advance: notification of the forthcoming. IVY series. along the lines of notification previously given for earlier test series. By memorandum dated October 15 from Mr. LeBaron I was informed that the Secretary of Defense concurred in the proposed advance notification. On October 22 I met with Acting Chairman Smyth and Commissioners Murray and Glennan to discuss in detail the various problems presented by the proposal. was the consensus of the meeting, after some discussion, It that I should proceed with the advance notification on the IVY series as in the past. I pointed out that my general advance notifi- cation to the British and the Canadians would be followed at a later date by more precise notification through AFOAT channels of the exect time of the shots and of the meteorological condi- tions existing at the time in order to facilitate British and Canadian interception of the clouds. No objection was raised mm This material contains information affecting thenational defense of the United States within the meaning of the espionage laws, Title 18, U.S.c., Sec. 793 and 794, the transmission or revelation of which in any manner to an unauthorized person is prohipited by law... enrid:Ear HawDla i iGBZz7~/LEL-Sa

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