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ATOMIC ENaRGY MATTERS W1Ts WHICE DONALD MACLEAN RaS Orr ac CON TERRES AS FinST Stor SOTERY Britis © RVEASSY, y, WASHUNGTON, D.C. Atomic Ener Comission, was interviewed on June 9, 1951, by Special Agent and advised that hie first contact with DONALD NACLEAN waé in april, 1947, when he, SP, Was attached to the Office of Speciel Projects of the Atomic Energy Commission. an expisined that the Office of Special Projects operated as a liaison branch of the Atomic Energy Commission which had contact with foreign governments. MACLEAR was Secretary of the United Kingdom Representation to the Com- bined Policy Committee, The Combined Policy Committee, according to , £8 composed of representatives of the United Kingdom, Canade and the United States and is concerned with Atomic Energy matters. He stated that in April, 1947, the Atomic, Energy Commission was not repre- sented on the Combined Policy Committes.but that it was concerned with several matters that the Combined Policy Committee acted upon, These matters were mainly joint problems dealing with legal matters and joint _declassification guides. WQ@BR stated that the formation of the joint declassification guides was to make certain that one government did not publish information that another member of the Combined Policy Committee felt should be kept secret. eit: :t.: ed that MACLEAN as the United Kingdom's secretary of the Combined Policy Committee usually made contact through the gmerican Secretary of the Combined Policy Committee who was a special assistant to the Sec ry of State, This individual awas identified by << : as in connection with his contact with VACLEAS that from time to time there would be meetings of special committees of the Combined Policy Comittee and WACLEAR attended most of these meetings during 1947 and until he was transferred from the United States in 1948. MMM stated that his association with MACLEAK at these meetings was the sole basis of his contact with MACLEAN concernine Atomic Energy Commission matters. He stated that he had had some social contact with “MACLEAK in that he had attended a few cocktail parties and that prior to MACLEAN's leaving for England, the Atomic Energy Commission officiale arranged a luncheon in MACLEAN's honor which he MQM, attended. rd + Concerning MACLEAN's background, 4M advised that he knew very little with the exception that he did remember MACLEAN had mentioned that he had married an American girl. stated that he could furnish