31 Aug 1953 US Statement USSR Statement ( ae * oS eat) AEC issued the ollowing state- ment: "On Aug 23, 1953, a fission ex- Plosion took place in Russian territory." "The explosion was in the same range of energy release as our Nevada tests and would appear to be part of a series. If this proves to be the fact, no further announcements will be made unless intelligence indi- cates information of greater interest." 18 Sept 1953 TASS announcement concerning test of new types of atomic bombs in the Soviet Union. In recent weeks in ac- cord with the plan of scientific research work in the field of atomic energy, in the Soviet Union tests have been held of several types of atomic bombs. Tests were successful. 26 Oct 1954 Chairman, AEC stated that TWehere had been a series of detonations of nuclear explosives in Soviet terri- tory. This series (more) S Date Sey ir ee o ne

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