wt To mE ee ee DRT Liewemerenenteel 500 Seee ee enece ay : ~~ = Ee rE TsseTie omer wey aae me 17, Our transinission to the tnitea Kingdom consisted of a written report and more detatied otal statements concerning weapons we now have and will shortly have in Production. Included were details of pize: vetght! shapé, - yield, amount of special nuclear material, method of nuciléat safing, mechanical and electrical design, and vulnerability, 18,.The United Kingdom representatives presented parallel information together with an indication of weapons they intend to develop. Following completion of allitems in the agenda, the United Kingdom representatives gave an oral presentation of their state of achievement in the nuclear weapons field, in which they described two rather sophisticated, Reyes) small, fission devices, one of which had been tested andthe other of which was to be tested, 19. During the first meeting it became obvious that the United Kingdom has achieved an advanced state of weapon research and development in both the fission and thermonuciear fields. Moreover, it appeared likely that certain advances made by the United Kingdom would be of benefit to the United States. - Wy - Part Tit