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ea ow Ujjice Memon ndum ro + Mr. Tolson on gc moms x, B. ¥ichole * SUBJECT: Fillion Borden, executive dtrector of the Jotat Con- _ mittee on dtonic Energy, advised me confidentially that tn the early days of the ¥m hottan Heels | District there was a combined policy conaittee represented by tndiuviduals deatgnated by the British, Conadtan and U, 8, governnente. Thte connittes had the reaponstbility of ftrtng allocations of arantua ores, going tnto the Jotnt acttutties af the Manhattan Engineering . setrict and subsequently of passing upon and Aandling the ez . - ies of technical tnfornstion, The combined policy corntttee had & Secretariat composed of one representative of each of the three countries. From April 1947 until July 2948, MacLean was the British member of the secretartat, Rd As such, Mocleon Aad detailed $ ‘ormotton on the allocottonof aren, B¥ORIe-prdeet teen ee rar) . 967 ¢ ae v atcal Ly conferen tn Br. Klaus Puc tegh- 30 attended the fir. eclasasif~icatton ~ 2e_visTior, witie the British delegate was Borden told me that the Jotnt Comnittee had requested AEC to prepare an estimate of how much knowledge MacLean coulé - [tnave hod. He G120-told me eonfidentially that ene ectentist Sutinately eesoctated with the atonic project has atated that tf ean were © Spy during the days when he wae cennected with the secretariat he could Asve hod access to considerable ta- “a formatton; however, the motter $2 now problenatical as to how - a . yee? MacLean hod tnosmuch aa he wos not a technicol mon, . L eee ete The thought oecurs tome that t¢ might be well sor ‘ss our Itateon $o make a routine Anguiry ot the Atoate Energy - on Sor. any snfornatton they might hove of any toate Snforaction which wos mode avotiable to MacLean. _ Fe ee ee) _. ZF thanked Borden for the taforaatto