Question: Julin Bristol is the codename given to a nuclear weapon test conducted at the Nevada Test Site on 26 November 1991, as part of which United States's  nuclear test series was a group of 7 nuclear tests conducted in 1991–1992, the final series of US nuclear tests, it was the last test explosion of a British nuclear weapon?
Sentence (from "Operation Julin"): These tests followed the "Operation Sculpin" series, and were the last before negotiations began for the Comprehensive Test Ban Treaty.
Relevant evidence: No