1| Announced Detonations by Year WI, 9 1962.0 eee 89 1963.0... ee. 2 1964.00, 28 1968.0, 28 1966.00.00. 40 W967. ee 28 1968. 33 1969.00.00 28 1970.00... eee. 30 TOF ee 7 W972. ea, 8 W973. eee 9 1974. eee 7 1945... 0... ee. 3 1946... 0.0.00, 2 W477. ee, 0 1948.00.00... 0... 3 1949.0... 0 1950. ... 2.2, 0 19Bt. eee 16 1962.00. ee 10 1963. .... 0... eee, 4 1964... 00, 6 1968... eee, 15 1956. ee, 17 W967. eee, 24 1968... eee, 55 1969... 0 eee 0 1960.00. ..... 0.0, 0 TOTAL 535 Early Nuclear Weapon Stockpile Data Fiscal Year 1945 1946 1947 1948 0 9 Q* 29* 2* 53* 0 9 0 13 0 50 Number of nonnuclear components 1. 2. Gun-type Iimplosion-type Number of nuclear 3. Gun-type 4. - Implosion-type *Numbers declassified in 1976 NO components