◆ SpookStack

tana ae me ee tn rr ca ae ed | ee ee ee ee Lt t 7 . ~* sone a et Me Tee en eS at Demers ‘ . 4 wae oo . stm ee se AO ET OTE Sone of the “Anformetion. available to Nechoen, An. 1947-4B as” ae al ie claneified Top Secret_and would + then have been of Anterest .... see aay te_the Sovi othe Soviet b Union. ; oo ts Mechean 44a not keve-access to fissionsble material production... _ O data t but_ _we have considered the ‘gquestionaf w whether ‘stoakpile nema “ 3 a wo. date cor could. “heve’ Deen. calculated from ¢ the 2 raw materials inform .-- - ation available to Hackea: in n connection with his duties in” - '\ 1987-He_ end belleye_th3t only a, rough order of megnitvte . a egtirate of presently existing or Raa “Btockpiio”o of my an fissionable meterial could be ¢erived from that faferostion.” ee ~: wee We have tested this out by calculations from those date, end ee ; find that the results would be widely misleading As to our - co. present or “prospective. y position in ffspionable materials RT, stockoile, Since 1946 there bes been no exchange of information © «G07. | with the United Iingdom and Canada concerning fissionsble . —_—- bpm eee material production processes, weapon technology 2nd develop. ..--.--..- -— = ment, or stockpiles of fissionable materials and weapons, Oo ~ The estimates of raw materials supply that were used in Combined Policy Committee cplcplations of 1947 were much under the cng teal bus a actual supplies r received in that period. Subsecuent | ‘to alee eek ee Maclean's transfer from Weshington, the fissioneble “paterial ~~ _ ~~ , Rote production « echedules have been expanded considerably over the - tee TT ~ estinéte OF sich schetulés for 19h8 through 1952 made in 1947 re | tar: and to “which } MacLean “hed eccess, Therefore, we do not ee . \}ve elieve t thet ¢ net the. ne information. available to Macbean in 1947-88 cat eeore dae! oa would now be of any appreciable ald to the Soviet Union 2 begause of the changes in the rate and scale of the eo — United States program w which have _taken cen place 4 in the _Anbers, Ce page et ty ee aa vening years. oe : . Jog. arr mllIoe ti 7 7 a We will appreciate any further information ,concerning ‘MacLean ee a which will help us in further r aascesing possible damage to _ . : our progran, a aati | OO OO ~ UNITED STATES ATOMIC EXERGY COMMISSION 7 . Fonoreble J. Edger Hoover, Director | <qgmaamas pees wee Federal Bureeu of Investigetion 1,320. 1. so U. 5. ree of Justice . Doe hee : FR ages Tela TL fee agement i BI 9 SEE pag os ae ce pam cei “(== ns ve tae ad ' sae mop ee ve be eae fe ee toe ante