Soviet Union's Nuclear Tests

There were 727 Soviet nuclear tests from 1949 through 1990. Most of the tests took place at the Southern Test Site in Semipalatinsk, Kazakhstan and the Northern Test Site at Novaya Zemlya.

Years	Tests	Yield range (kilotons)	Total yield (kilotons)
1949-1951	3	22 to 42	102
1953-1955	22	0 to 1,600	2,430
1956-1960	61	small to 2,900	24,467
1961–1965	163	small to 50,000	229,776
1966–1970	87	small to 2,200	6,727
1971–1975	104	small to 4,000	21,212
1976–1980	131	small to 180	4,792
1981–1985	107	2 to 880	4,901
1986–1990	49	small to 150	2,428
Totals	727		296,837

Note: This list also includes 156 Peaceful nuclear explosions (PNEs).