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“Maclean A-Data) Not Useful Now, State Dept. Says By International News Service ‘The State department conceded | today that mjssing Brilish diplo-, mat Donald “MacLean once had access to vital atomic information, but contended it would be of little use to Russla now. MacLean and a fellow British foreign office worker, Guy Bur- gess, disappeared from London May 25 under mysterious circum- stances. A world-wide search has been unsuccessful and fears have been expressed that the pair may, be in Russia. ‘A State department spokesman said that MacLean was made Brit- ish secretary of the combined U.8., British and Canadian atomic policy committee in 1947. Had ‘Shared Information’ The spokesman emphasized, however, that this was year after the United States banned the ex- change of information bout atomic weapons, fisstonabiq ma- terials and A-bomb stockpilés. The spokesman stated: “MacLean had opportunfy to have access to information shared by the United States, Canada and the United Kingdom In the field of patents, declassification mat- ters and the research and develop- ment4 of procurement of raw mategials from foreign sources. “In|this capacity, McLean had access to information relating to estimadtes made in 1948 of ura- nium ore supplies from foreign sources available to the three gov- ernments for the period 1948-49 and the definition of scientific areas in which the three govern- ments deemed technical co-opera-! tion could be accomplished with mutual benefit.” “Was Only Diplomat” | ‘The spokesman said the scien- tific areas “in general” included such subjects as health and safe- ty, research with low-power re- actors, extraction chemistry, sta- ble isotopes and radlo-isotopes. The spokesman added: “The role that MacLean had in these activities was that of a, diplomat. He js not a scientist; and his duties in connection with’ ‘combined policy committee mat- ‘ters was’ of @ procedural and 'British diplomatic secretarial’ character. ; “Some of the information avail-: able to him in 1947-48 was classi-: ‘tied and would then have been| useful at that time to the Soviet atomic energy program and to then. would not now. be. of any Sppreciable aid to the sovietsap ay os Tolson Ladd Clegg. Glavin. Nichols. Rosen. Tracy, Harbo Alden Belmont. Laughlia__- Mobr Tele, Room Page TimessHerald «_ Wash. Post Wash. News Wash. Star N.Y. Mirror N. Y. Gompass.