|Test site||Nevada Test Site|
|Number of tests||8|
|Previous test||Operation Sculpin|
|Next test||Last Nuclear Tests conducted by United States|
Operation Julin was a series of 8 underground nuclear tests conducted at the Nevada Test Site in 1991 and 1992. This test series followed the Sculpin series and was the last nuclear test series conducted by the U.S.
The detonations in Operation Julin are listed below:
|Name||Date Time (UT)||Location||Elevation + Height||Delivery||Purpose||Device||Yield||Venting||Notes|
|Lubbock||October 18, 1991 19:00:12.0||NTS Area U3mt||1,213 m (3,980 ft) - 457.2 m (1,500 ft)||Underground shaft||Weapons development||53 kt||Noted, 0.1Ci|
|Junction||March 26, 1992 16:00:30.0||NTS Area U19bg||2,013 m (6,604 ft) - 622 m (2,041 ft)||Underground shaft||Weapons development||100 kt|
|Diamond Fortune||April 30, 1992 16:00:30.0||NTS Area U12p.05||1,656 m (5,433 ft) - 236 m (774 ft)||Underground tunnel||Weapon effect||3 kt||Noted, 0.2Ci|
|Victoria||June 19, 1992 16:00:45.0||NTS Area U3kv||1,179 m (3,868 ft) - 244 m (801 ft)||Underground shaft||Weapons development||80 t|
|Galena-Green - 3||June 23, 1992 15:00:00.07||NTS Area U9cv||1,269 m (4,163 ft) + unknown||Underground shaft||Safety experiment||less than 5 kt||Simultaneous, same hole.|
|Galena-Orange - 2||June 23, 1992 15:00:00.07||NTS Area U9cv||1,269 m (4,163 ft) + unknown||Underground shaft||Safety experiment||less than 5 kt||Simultaneous, same hole.|
|Galena-Yellow - 1||June 23, 1992 15:00:00.072||NTS Area U9cv||1,269 m (4,163 ft) - 400 m (1,300 ft)||Underground shaft||Weapons development||less than 5 kt||Simultaneous, same hole.|
|Hunters Trophy||September 18, 1992 17:00:00.078||NTS Area U12n.24||1,827 m (5,994 ft) - 385.3 m (1,264 ft)||Underground tunnel||Weapon effect||4 kt||Noted, 1Ci|
|Divider||September 23, 1992 15:00:04.0||NTS Area U3ml||1,208 m (3,963 ft) - 426 m (1,398 ft)||Underground shaft||Weapons development||5 kt||Noted, 0.1Ci||Last U.S. nuclear test; "test to ensure safety of deterrent forces".|
As the series was the last conducted by the U.S., the last test in the series also became the last nuclear test conducted by the U.S. It was named Divider and took place on September 23, 1992. It was described as a "Test to ensure the safety of U.S. deterrent forces". U.S. President George H. W. Bush declared a testing moratorium October 1, 1992.
- "United States Nuclear Tests, July 1945 through September 1992 (DOE/NV-209)" (pdf). U.S. Department of Energy Nevada Operations Office. 2000.
- A bomb test may be a salvo test, defined as two or more explosions "where a period of time between successive individual explosions does not exceed 5 seconds and where the burial points of all explosive devices can be connected by segments of straight lines, each of them connecting two burial points and does not exceed 40 kilometers in length". Mikhailov, V. N., Editor in Chief. Catalog of World Wide Nuclear Testing. Begell-Atom, LLC.
- An appended number represents a member of a salvo test. They usually all have the same name, like Tub-A, Tub-B, ..., but early on had separate names, so other members are denoted by "(with xyz)".
- Universal Time at the Nevada National Security Site is 8 hours after local time; UT dates are one day after local date for UT times after 16:00.
- Rough place name and a Latitude/Longitude reference. Some are extremely accurate; others (like airdrops and space blasts) may be quite inaccurate. '~' indicates a likely pro-forma rough location, shared with other tests in that same area.
- Elevation is the ground level at the point directly below the explosion relative to sea level; height is the additional distance added or subtracted by tower, balloon, shaft, tunnel or other contrivance. For air bursts it is the absolute altitude of the explosion disregarding ground level (though the ground level is given for comparison), and for rockets the ground level is "N/A".
- Atmospheric, airdrop, balloon, gun, cruise missile, rocket, surface, tower, barge and cratering are all disallowed by the Partial Nuclear Test Ban Treaty. Sealed shaft and tunnel are underground, and remained useful under the PTBT.
- Include weapons development, weapon effects, safety test, transport safety test, war, science, joint verification and industrial/peaceful, which may be further broken down.
- Designations for test items where known, nicknames for individual bombs in quotes.Names are "Mark #" or "B#" for bombs, "W#" for rocket warheads, "X#" for experimental, plus code names like "Piccolo". "Primary" refers to a test of only the primary (fission) stage of a multi-stage bomb.
- Estimated energy yield in tonnes, kilotonnes, and megatonnes (and yes, they are all metric units).
- Emissions to atmosphere, where known. No entry means unknown, probably none if underground and "all" if not; otherwise notation for whether measured on the site only or off the site, and the maximum amount released, in Curies ("Ci") with metric prefixes.
- http://www.projectforthectbt.org/testing Keeping the U.S. Nuclear Arsenal Safe, Secure and Reliable
- United States Nuclear Tests: July 1945 through September 1992 (Revision 15). Department of Energy, Nevada Operations Office. December 2000. Retrieved 2013-10-26.
- Yang, Xiaoping; North, Robert; Romney, Carl (August 2000). CMR Nuclear Explosion Database (Revision 3). SMDC Monitoring Research. Retrieved 2013-10-26.
- Official list of underground nuclear explosions. Sandia National Laboratories. July 1994. Retrieved 2013-Oct-31.
- Norris, Robert Standish; Cochran, Thomas B. (1 February 1994). "United States nuclear tests, July 1945 to 31 December 1992". Nuclear Weapons Databook Working Paper (Washington, DC: Natural Resources Defense Council). NWD 94-1. Retrieved 2013-10-26.
- Hechanova, Anthony E.; O'Donnell, James E. (25 September 1998). Estimates of yield for nuclear tests impacting the groundwater at the Nevada Test Site. Nuclear Science and Technology Division.