The United States's Grommet nuclear test series was a group of 34 nuclear tests conducted in 1971–1972. These testsA 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". followed the Operation Emery series and preceded the Operation Toggle series.

List of the nuclear tests

+ United States' Grommet series tests and detonations NameThe US, France and Great Britain have code-named their test events, while the USSR and China did not, and therefore have only test numbers (with some exceptions Soviet peaceful explosions were named). Word translations into English in parentheses unless the name is a proper noun. A dash followed by a number indicates a member of a salvo event. The US also sometimes named the individual explosions in such a salvo test, which results in "name1 1 (with name2)". If test is canceled or aborted, then the row data like date and location discloses the intended plans, where known. Date time (UT) Local time zoneTo convert the UT time into standard local, add the number of hours in parentheses to the UT time; for local daylight saving time, add one additional hour. If the result is earlier than 00:00, add 24 hours and subtract 1 from the day; if it is 24:00 or later, subtract 24 hours and add 1 to the day. Historical time zone data obtained from the IANA time zone database. LocationRough place name and a latitude/longitude reference; for rocket-carried tests, the launch location is specified before the detonation location, if known. Some locations 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 + heightElevation 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, air drop or other contrivance. For rocket bursts the ground level is "N/A". In some cases it is not clear if the height is absolute or relative to ground, for example, Plumbbob/John. No number or units indicates the value is unknown, while "0" means zero. Sorting on this column is by elevation and height added together. DeliveryAtmospheric, airdrop, balloon, gun, cruise missile, rocket, surface, tower, and barge are all disallowed by the Partial Nuclear Test Ban Treaty. Sealed shaft and tunnel are underground, and remained useful under the PTBT. Intentional cratering tests are borderline; they occurred under the treaty, were sometimes protested, and generally overlooked if the test was declared to be a peaceful use.PurposeInclude weapons development, weapon effects, safety test, transport safety test, war, science, joint verification and industrial/peaceful, which may be further broken down. DeviceDesignations for test items where known, "?" indicates some uncertainty about the preceding value, nicknames for particular devices in quotes. This category of information is often not officially disclosed. YieldEstimated energy yield in tons, kilotons, and megatons. A ton of TNT equivalent is defined as 4.184 gigajoules (1 gigacalorie). FalloutRadioactive emission to the atmosphere aside from prompt neutrons, where known. The measured species is only iodine-131 if mentioned, otherwise it is all species. 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, where known, and the measured amount of radioactivity released. References Notes Diamond Mine 14:00:00.04 PST (–8 hrs) NTS Area U16a.06

tunnel,joint verification

Designed to test detection of underground nuclear tests; see Vela Uniform. Miniata 14:00:00.082 PST (–8 hrs) NTS Area U2bu

underground shaft,peaceful research Diamond

Venting detected,

Project Plowshare device development. Bracken 14:00:00.16 PST (–8 hrs) NTS Area U10aq

underground shaft,weapons development

Venting detected,

Apodaca 13:33:00.05 PST (–8 hrs) NTS Area U3gs

underground shaft,weapons development

Barranca 13:30:00.042 PST (–8 hrs) NTS Area U3he

underground shaft,weapons development

Nama-Amarylis 1 18:07:45.2 PST (–8 hrs) NTS Area U9itsxy3

underground shaft,weapons development

Simultaneous, separate holes. Nama-Mephisto 2 18:07:45.2 PST (–8 hrs) NTS Area U9itsz27 + underground shaft,weapons development

Simultaneous, separate holes. Baltic 14:31:00.16 PST (–8 hrs) NTS Area U9itss25

underground shaft,weapons development

Algodones 14:00:00.03 PST (–8 hrs) NTS Area U3jn

underground shaft,weapons development

Frijoles-Deming 1 14:00:00.037 PST (–8 hrs) NTS Area U3jw

underground shaft,safety experiment

Simultaneous, separate holes. Frijoles-Espuela 2 14:00:00.04 PST (–8 hrs) NTS Area U3ju + underground shaft,safety experiment

Simultaneous, separate holes. Frijoles-Guaje 3 14:00:00.04 PST (–8 hrs) NTS Area U3hf + underground shaft,weapons development

Simultaneous, separate holes. Frijoles-Petaca 4 14:00:00.04 PST (–8 hrs) NTS Area U3hz + underground shaft,weapons development

Simultaneous, separate holes. Pedernal 14:00:00.04 PST (–8 hrs) NTS Area U3hg

underground shaft,weapons development

Chantilly 14:30:00.14 PST (–8 hrs) NTS Area U2di

underground shaft,weapons development

Cathay 14:30:00.15 PST (–8 hrs) NTS Area U9ch

underground shaft,weapons development

Lagoon 14:30:00.16 PST (–8 hrs) NTS Area U10ar

underground shaft,weapons development

Cannikin 22:00:00.06 BST (–11 hrs) Amchitka Island, Alaska

underground shaft,weapons development

A test of the Spartan ABM warhead. The largest underground nuclear test ever. Diagonal Line 20:15:00.17 PST (–8 hrs) NTS Area U11g

underground shaft,weapon effect

Venting detected off site,

Picture of the "Ship of the Desert", a structure for capturing neutrons for experiments with this test: :File:NNSA-NSO-1347.jpg. Parnassia 15:45:00.15 PST (–8 hrs) NTS Area U2bc

underground shaft,weapons development

Chaenactis 21:09:59.16 PST (–8 hrs) NTS Area U2dl

underground shaft,weapons development

Hospah 21:10:01.04 PST (–8 hrs) NTS Area U3je

underground shaft,weapons development

Yerba 21:10:01.04 PST (–8 hrs) NTS Area U1c

underground shaft,weapons development

Mescalero 15:10:00.04 PST (–8 hrs) NTS Area U3gu

underground shaft,weapons development

Cowles 21:45:00.04 PST (–8 hrs) NTS Area U3hx

underground shaft,weapons development

Dianthus 19:02:00.16 PST (–8 hrs) NTS Area U10at

underground shaft,weapons development

Venting detected,

Sappho 18:50:00.16 PST (–8 hrs) NTS Area U2dh2

underground shaft,weapons development

Venting detected,

Ocate 2 (with Onaja) 21:00:00.08 PST (–8 hrs) NTS Area U3jp + underground shaft,weapons development

Onaja 1 (with Ocate) 21:00:00.04 PST (–8 hrs) NTS Area U3js

underground shaft,weapons development

Longchamps 16:32:00.16 PST (–8 hrs) NTS Area U2dm

underground shaft,weapons development

Jicarilla 16:42:00.05 PST (–8 hrs) NTS Area U3jm

underground shaft,weapons development

Misty North 19:15:00.04 PST (–8 hrs) NTS Area U12n.05

tunnel,weapon effect

Kara 14:00:00.16 PST (–8 hrs) NTS Area U2dh3

underground shaft,weapons development

Venting detected,

Zinnia 14:10:00.16 PST (–8 hrs) NTS Area U2dk

underground shaft,weapons development

Venting detected,

Monero 17:00:00.05 PST (–8 hrs) NTS Area U3jg

underground shaft,weapons development

Merida 15:20:00.16 PST (–8 hrs) NTS Area U2dn

underground shaft,weapons development

Venting detected,

Capitan 14:41:00.19 PST (–8 hrs) NTS Area U3jj

underground shaft,weapons development

Tajique 16:30:00.07 PST (–8 hrs) NTS Area U7aa

underground shaft,weapons development

Haplopappus 16:30:03.16 PST (–8 hrs) NTS Area U9itsw22

underground shaft,weapons development

References