ar C i re canFENplo e* fe “os. pa 7 Pe OFFICE of TE SECRETARY oF DEM oo |SECIET ti * e . , Washington 25, De Ge 0 O71 ‘Y tHe P LOUCRANDUM FOR: Merch 21] 1957 - OCB Staff Representative, Working Group on Nuclear Energy Matters and Related Projects SUBJECT: Military Foreign Participation in Operation PLUMBBOR 1. In reference to the request of the Working Group at |the neeting of 18 March 1957, for additional information as to foyeign participation in Operation PLUMBBOB, the attached summary is ffor-— warded. It should be understood that this program has not bean fully approved within the Department and sore details of the extent jof the progran are still in the planning stage. For this reason thiq should be considered a rough outline of the program so that the Board can properly consider the Information Plan for Operation PLUMBBOB J 2. In addition to the above, the following foreign participation programs are being planned by the Department of Defense: (a) Steff representatives of the British Joint Serjices Mission in Washington to observe and participate in Desert Rock Exercises (- (c) A separate RoyalCanadian Air Force observer group to witness the MB-1 rocket shot (abottt 20). /s/ Herbert B. Lover Herbert B. Loper Assistant to the Jecretary of Defense (Atodic Energy) 2 Inclosures: (1) (2) Approximate Allocations Canadian Participation UPON REMOVAL OF ATTACHES TS DCCUMENT BECOMES CONFIDENTIAL DECLASSIFIED WITH DELETIONS: Agency Case50_&-moe 83. [mec Case $4 “174 w3 ; |B. b> ie nal27291§ » \ garg FO scone} ‘Be Stoodasgunk. +3 SU's ae

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