At 2335 pm. the Comiiittes met with @ large group Of visitors to > consider information available on. the recent Russian ‘shots, of the Committee, the Secretary,‘andMr. Tomei were present. visitors were: All members The Dr, ‘A, A Bethe, Dr. N. E, Bradbury, Dr. Carson Mark,’ Mr. R. W, Spence, Dri‘A P; York,>Gen. K. E. Fields, Gen, Ws M, Canterbury, Mrs Ds L. Northrup, Dr. D. Hi Rock, Dr. W.-D. Urry, Mr. H, 1 Miller, : Dr. 8: G. English, Me Gi MeKavshagh, Dr: ©: Hi Reichardt, Mr. Gi B. onisted, coli Ti Ai cibba, ds BO: Fine, ao Wi aWillies, Mr. K. Dy Nichols, be: Hy Dd, Sinyth, Mr. T. EB. Murray, Mr. L, L. ‘Strauss, Me. Joseph Campbell. 7 4 os | Presentations were made by Gen. Canterbury andMr. Northrup, on behalf of AFOAT-1, and by Dr, Bethe, | Gen. Canterbury reviewed the mission and techniques of AFOAT-L. Their missionis to detect at long range,“and obtain and analyze data on } all foreign nuclear explosions, They maintain an operational net of — | acoustic and seismic stations, with which they believe a 20-KT. shot in. 4 pipers ada2 ha AFCAT-1 Mission riba are, nageta eMreaatas the present Soviet ‘Proving grounds¢can be detectedJ _,: a al ESE, Phere‘is 3 considerableoptimiam‘(voth bythe Doe niques SearepeRr erree POTEET ETOF U.S. and by ‘the british) for electromagnetic. Tong range detection, for. which there exist two 8 satione, one in Maine and¢one in Washington. Se. a iN ieee ae ey SUESISAERS eiReece etna Beale ceriaaitSHTECE feai a pei ve sabeaemtaedtehtsSeraciateieog eR0hes 2 lection of bomb debris is maintained;- daily ‘flights are made from Guam to within 200 miles of the North Pole. Bit,