What is the name given to the final series of 7 US nuclear tests that took place in 1991 to 1992?
Operation Julin The United States's Julin nuclear test series was a group of 7 nuclear tests conducted in 1991–1992. These tests followed the "Operation Sculpin" series, and were the last before negotiations began for the Comprehensive Test Ban Treaty.
1970 Soviet nuclear tests The Soviet Union's 1970 nuclear test series was a group of 16 nuclear tests conducted in 1970. These tests followed the "1969 Soviet nuclear tests" series and preceded the "1971 Soviet nuclear tests" series.