What is the name given to the final series of 7 US nuclear tests that took place in 1991 to 1992?
Julin Bristol Julin Bristol is the codename given to a nuclear weapon test conducted at the Nevada Test Site on 26 November 1991. Conducted as part of Operation Julin, the final series of US nuclear tests, it was the last test explosion of a British nuclear weapon. Both the US and UK, as signatories of the Comprehensive Nuclear-Test-Ban Treaty, ceased nuclear testing after Operation Julin.
B77 nuclear bomb The B77 was a nuclear bomb designed in 1974 to match the delivery capabilities of the B-1A bomber. This included the ability to be dropped from supersonic speeds at altitudes of 60,000 feet, or in a laydown delivery at high subsonic speeds at altitudes as low as 100 feet. Meant to replace the Mk 28 and Mk 43 in the strategic role, the program was cancelled in December 1977 due to rising costs and the cancellation of the bomber it had been designed to serve. Many components of the B77 including its already tested physics package (the actual bomb core) were incorporated in the B83 which was developed in its place.