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.
Operation Argus Operation Argus was a series of United States low-yield, high-atmosphere nuclear weapons tests and missile tests secretly conducted during August and September 1958 over the South Atlantic Ocean. The ARGUS tests took 11 days from start to finish with the first launch on 27 August and the final launch on 6 September. They were performed by the Defense Nuclear Agency, in conjunction with the Explorer 4 space mission. Operation Argus was conducted between the nuclear test series "Operation Hardtack I" and "Operation Hardtack II". Contractors from Lockheed Aircraft Corporation as well as a few personnel and contractors from the U.S. Atomic Energy Commission were on hand as well.