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VY <i March, 1947 until he left the United States, SMW advised that this trust was composed of United States, United Kingdom and Canedian members and the purpose was to develop information concerning the locetion and availability of rew materials for atomic production. Also, the Trust carried on negotiations for acquiring these necessary raw materials, as well as the allocation of raw materials. He said that these Trust meetings oocurred intermittently, sometimes two or thrce a month, while at other times no meetings took place for one or two months. @ MPF eiso declared that DONALD MiC LEAN was a United Kingdom representative on the Combined Polley Committee, of which the United States Secretary of State was the Chairman. He said this committce discussed polic i) in the field of atomic energy. te WEEE recalled that DONALD MC LEN attended a three-day declassification conference which was héld in October of 19147. At this conference the discussions were limited to the atomic energy information held in camon by the United Stetes, Canada and England during the ware He said also that this conference included a discussion of etomic weapons. He pointed out that another United Kingdom representative at this declassification conference) was KLAUS FUCHS, confessed Sovict espionage agent. mae acclarcd that he never knew DONALD MAC LEAN very woll, although he met him occasionally at cocktail partics in Washington, D.C. He did recall attending a farewell party for DONALD MAC LEAN in the latter's home in Washington, D.C. at a time that he places as the summer of 1918. He seid thet approximately 4O or 50 people were present at this farewcll party. PP gm advised that he had never had any discussions or "bull sessions" with DONALD MAC IRAN, and had no knowledge of MAC LEAN'S political inclinations. He said that most of his discussions with MAC LEAN were of an w - 12 -