Editing Operation Plumbbob (section)

==List of tests==

{{See also|List of nuclear weapons tests of the United States}}

{| class="wikitable sortable"
 |+ United States' Plumbbob series tests and detonations
 |-
! style="background:#fda" | Name
! style="background:#eee" | Date time ([[Universal Time|UT]])<br> ([[time zone|local]]: [[Pacific Standard Time|PST]], −8&nbsp;hrs)<ref group=note>To convert the UT into standard local PST, subtract 8 hours. If the result is earlier than 00:00, add 24 hours and subtract 1 from the day. Historical time zone data are derived from {{cite web| title=Time Zone Historical Database| publisher=iana.com| url=http://www.ietf.org/timezones/| access-date=March 8, 2014| archive-date=March 11, 2014| archive-url=https://web.archive.org/web/20140311224729/http://www.ietf.org/timezones/| url-status=live}}</ref>
 ! style="background:#eee" | [[List of nuclear test sites|Location]]<ref group=note>Rough 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.</ref>
 ! style="background:#fda" | [[Elevation]] + height <ref group=note>Elevation is the ground level at the point directly below the explosion relative to sea level; height is the additional distance added or 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.</ref>
 !style="background:#eee" | Delivery <ref group=note>Atmospheric, airdrop, balloon, gun, cruise missile, rocket, surface, tower, and barge have all been disallowed by the [[Partial Nuclear Test Ban Treaty]] since 1963. 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.</ref><br />Purpose <ref group=note>Include weapons development, weapon effects, safety test, transport safety test, war, science, joint verification and industrial/peaceful, which may be further broken down.</ref>
 !style="background:#eee" | [[List of nuclear weapons|Device]]<ref group=note>Designations 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.</ref>
 !style="background:#fda" | [[Nuclear weapon yield|Yield]]<ref group=note>Estimated energy yield in [[TNT equivalent|tons or kilotons]]. A ton of TNT equivalent is defined as 4.184&nbsp;gigajoules (1&nbsp;gigacalorie).</ref>
 !style="background:#eee" class="unsortable" | [[Nuclear fallout|Fallout]]<ref group=note>Radioactive 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.</ref>
 !style="background:#fda" class="unsortable" | References
 !style="background:#eee" class="unsortable" | Notes
 |-
 ! ''Boltzmann''{{anchor|Boltzmann}}
 | {{dts|1957|5|28}} 11:55:00.2
 | [[Nevada National Security Site|NTS]] Area 7c {{coord|37.0947|-116.0245|name=Boltzmann|display=inline}}
 | {{sort|001444|}}{{convert|1294|m|abbr=on}} + {{convert|150|m|abbr=on}}
 | tower,<br />weapons development
 | [[W40 (nuclear warhead)|XW-40]]
 | style="text-align:center;" | {{sort|000120000|12&nbsp;kt}}
 | I-131 venting detected, {{convert|1.9|MCi|PBq|abbr=on}}
 | <ref name=LT_1 /><ref name=LT_167 /><ref name=LT_150 /><ref name=LT_148 /><ref name=LT_24 /><ref name=LT_6 />
 | XW-40 lightweight boosted fission warhead test.
 |-
 ! ''Franklin''{{anchor|Franklin}}
 | {{dts|1957|6|2}} 11:54:59.9
 | [[Nevada National Security Site|NTS]] Area T3 {{coord|37.0477|-116.022|name=Franklin|display=inline}}
 | {{sort|001319|}}{{convert|1229|m|abbr=on}} + {{convert|90|m|abbr=on}}
 | tower,<br />weapons development
 | [[W30 (nuclear warhead)|XW-30]] ?
 | style="text-align:center;" | {{sort|000001400|140&nbsp;t}}
 | I-131 venting detected, {{convert|19|kCi|TBq|abbr=on}}
 | <ref name=LT_1 /><ref name=LT_167 /><ref name=LT_150 /><ref name=LT_148 /><ref name=LT_24 /><ref name=LT_6 />
 | XW-30 warhead test, fizzled. Retested successfully with ''Franklin Prime'', with more fissile material in the core and different explosives.
 |-
 ! ''Lassen''{{anchor|Lassen}}
 | {{dts|1957|6|5}} 11:45:00.3
 | [[Nevada National Security Site|NTS]] Area B9a ~ {{coord|37.1347|-116.0417|name=Lassen|display=inline}}
 | {{sort|001745|}}{{convert|1595|m|abbr=on}} + {{convert|150|m|abbr=on}}
 | balloon,<br />weapons development
 | 
 | style="text-align:center;" | {{sort|000006000|600&nbsp;t}}
 | I-131 venting detected, {{convert|100|Ci|GBq|abbr=on}}
 | <ref name=LT_1 /><ref name=LT_167 /><ref name=LT_150 /><ref name=LT_6 />
 | [[Fizzle (nuclear test)|Fizzle]], unboosted all-oralloy small weapon design.
 |-
 ! ''Wilson''{{anchor|Wilson}}
 | {{dts|1957|6|18}} 11:45:00.3
 | [[Nevada National Security Site|NTS]] Area B9a ~ {{coord|37.1347|-116.0417|name=Wilson|display=inline}}
 | {{sort|001739|}}{{convert|1589|m|abbr=on}} + {{convert|150|m|abbr=on}}
 | balloon,<br />weapons development
 | [[W45 (nuclear warhead)|XW-45X1]]
 | style="text-align:center;" | {{sort|000100000|10&nbsp;kt}}
 | I-131 venting detected, {{convert|1.5|MCi|PBq|abbr=on}}
 | <ref name=LT_1 /><ref name=LT_167 /><ref name=LT_150 /><ref name=LT_24 /><ref name=LT_6 />
 | XW-45X1 Swan test, gas-boosted composite pit.
 |-
 ! ''Priscilla''{{anchor|Priscilla}}
 | {{dts|1957|6|24}} 13:30:00.1
 | [[Nevada National Security Site|NTS]] Area 5 {{coord|36.798|-115.9298|name=Priscilla|display=inline}}
 | {{sort|001150|}}{{convert|940|m|abbr=on}} + {{convert|210|m|abbr=on}}
 | balloon,<br />weapons development
 | [[Mark 15 nuclear bomb|Mk-15/39]] primary
 | style="text-align:center;" | {{sort|000370000|37&nbsp;kt}}
 | I-131 venting detected, {{convert|5.8|MCi|PBq|abbr=on}}
 | <ref name=LT_1 /><ref name=LT_150 /><ref name=LT_148 /><ref name=LT_24 /><ref name=LT_6 />
 | Effects shot with OTS weapon. Similar to that tested in ''Redwing Lacrosse''.
 |-
 ! ''Coulomb-A''{{anchor|Coulomb-A}}
 | {{dts|1957|7|1}} 17:30:??
 | [[Nevada National Security Site|NTS]] Area S3h {{coord|37.053|-116.034|name=Coulomb-A|display=inline}}
 | {{sort|001231|}}{{convert|1231|m|abbr=on}} + 0
 | dry surface,<br />safety experiment
 | [[W31|XW-31]]
 | style="text-align:center;" | {{sort|000000000|no yield}}
 | 
 | <ref name=LT_1 /><ref name=LT_167 /><ref name=LT_150 /><ref name=LT_24 /><ref name=LT_6 /><ref name=LT_44 />
 | Safety experiment, successful.
 |-
 ! ''[[Plumbbob Hood|Hood]]''{{anchor|Hood}}
 | {{dts|1957|7|5}} 11:40:00.1
 | [[Nevada National Security Site|NTS]] Area B9a ~ {{coord|37.1347|-116.0417|name=Hood|display=inline}}
 | {{sort|001745|}}{{convert|1285|m|abbr=on}} + {{convert|460|m|abbr=on}}
 | balloon,<br />weapons development
 | [[Swan (nuclear primary)|Swan]] primary and Whistle secondary. Full-scale test of device was [[Operation Hardtack I|Hardtack I Maple]] shot.<ref>{{Cite book| isbn = 978-0-9791915-6-5| volume = VI| last = Chuck Hansen| title = Swords of Armageddon| date = 2007|page=392}}</ref>
 | style="text-align:center;" | {{sort|000740000|74&nbsp;kt}}
 | I-131 venting detected, {{convert|11|MCi|PBq|abbr=on}}
 | <ref name=LT_1 /><ref name=LT_167 /><ref name=LT_150 /><ref name=LT_148 /><ref name=LT_6 />
 | Largest atmospheric test in CONUS. Was a 2-stage thermonuclear device, even though AEC stated that no thermonuclear devices were being tested at the NTS. [[Desert Rock VII]].
 |-
 ! ''Diablo''{{anchor|Diablo}}
 | {{dts|1957|7|15}} 11:30:00.1
 | [[Nevada National Security Site|NTS]] Area T2b {{coord|37.1502|-116.1095|name=Diablo|display=inline}}
 | {{sort|001517|}}{{convert|1367|m|abbr=on}} + {{convert|150|m|abbr=on}}
 | tower,<br />weapons development
 | Swan
 | style="text-align:center;" | {{sort|000170000|17&nbsp;kt}}
 | I-131 venting detected, {{convert|2.5|MCi|PBq|abbr=on}}
 | <ref name=LT_1 /><ref name=LT_167 /><ref name=LT_150 /><ref name=LT_148 /><ref name=LT_6 />
 | Very similar to the ''Shasta'' test device. 2 stage. Misfired at first firing attempt three days earlier.
 |-
 ! ''John''{{anchor|John}}
 | {{dts|1957|7|19}} 14:00:04.6
 | Launch from NTS, Areas 1–4, 6–10, Yucca Flat: 10 {{coord|37|-116.0539|name=Launch_John|display=inline}}, elv: {{convert|1220|+|5600|m|abbr=on}};<br />Detonation over [[Nevada National Security Site|NTS]] {{coord|37.1605|-116.0539|name=John|display=inline}}
 | {{sort|006919|}}{{convert|1280|m|abbr=on}} + {{convert|5639|m|abbr=on}}
 | Air launched rocket, weapon effect
 | [[W25 (nuclear warhead)|W-25]]
 | style="text-align:center;" | {{sort|000020000|2&nbsp;kt}}
 | I-131 venting detected, 6.1MCi?
 | <ref name=LT_1 /><ref name=LT_150 /><ref name=LT_148 /><ref name=LT_24 /><ref name=LT_6 />
 | Proof test of ''[[AIR-2 Genie|AIR-2A Genie]]'' air-to-air rocket. Test made famous by five USAF officers and a videographer standing at ground zero below the hypocentre and during the detonation, flash and blast.
 |-
 ! ''Kepler''{{anchor|Kepler}}
 | {{dts|1957|7|24}} 11:49:59.9
 | [[Nevada National Security Site|NTS]] Area 4 {{coord|37.09549|-116.10354|name=Kepler|display=inline}}
 | {{sort|001468|}}{{convert|1318|m|abbr=on}} + {{convert|150|m|abbr=on}}
 | tower,<br />weapons development
 | [[XW-35]] primary?
 | style="text-align:center;" | {{sort|000100000|10&nbsp;kt}}
 | I-131 venting detected, {{convert|1.7|MCi|PBq|abbr=on}}
 | <ref name=LT_1 /><ref name=LT_167 /><ref name=LT_150 /><ref name=LT_148 /><ref name=LT_24 /><ref name=LT_6 />
 | ICBM warhead, similar to ''Hardtack I/Koa''.
 |-
 ! ''Owens''{{anchor|Owens}}
 | {{dts|1957|7|25}} 13:29:59.7
 | [[Nevada National Security Site|NTS]] Area B9b ~ {{coord|37.1347|-116.0417|name=Owens|display=inline}}
 | {{sort|001410|}}{{convert|1260|m|abbr=on}} + {{convert|150|m|abbr=on}}
 | balloon,<br />weapons development
 | [[XW-51]] ?
 | style="text-align:center;" | {{sort|000097000|9.7&nbsp;kt}}
 | I-131 venting detected, {{convert|1.7|MCi|PBq|abbr=on}}
 | <ref name=LT_1 /><ref name=LT_167 /><ref name=LT_150 /><ref name=LT_24 /><ref name=LT_6 />
 | Very small boosted [[plutonium]] device, XW-51 progenitor.
 |-
 ! ''{{visible anchor|Pascal-A}}''
 | {{dts|1957|7|26}} 08:00:00.0
 | [[Nevada National Security Site|NTS]] Area U3j {{coord|37.05175|-116.03415|name=Pascal-A|display=inline}}
 | {{sort|001052|}}{{convert|1202|m|abbr=on}}–{{convert|150|m|abbr=on}}
 | underground shaft,<br />safety experiment
 | 
 | style="text-align:center;" | {{sort|000000550|55&nbsp;t}}
 | I-131 venting detected, {{convert|10|kCi|TBq|abbr=on}}
 | <ref name=LT_1 /><ref name=LT_150 /><ref name=LT_148 /><ref name=LT_6 />
 | Originally ''Galileo A''. One-point safety experiment, failure. Expected yield was less than 1&nbsp;kg. A concrete cylinder perhaps {{convert|2|m|abbr=on}} thick {{convert|100|m|abbr=on}} up the tube disappeared.
 |-
 ! ''Stokes''{{anchor|Stokes}}
 | {{dts|1957|8|7}} 12:25:00.2
 | [[Nevada National Security Site|NTS]] Area B7b ~ {{coord|37.0866|-116.0245|name=Stokes|display=inline}}
 | {{sort|001710|}}{{convert|1250|m|abbr=on}} + {{convert|460|m|abbr=on}}
 | balloon,<br />weapons development
 | [[W30 (nuclear warhead)|XW-30]]
 | style="text-align:center;" | {{sort|000190000|19&nbsp;kt}}
 | I-131 venting detected, {{convert|2.8|MCi|PBq|abbr=on}}
 | <ref name=LT_1 /><ref name=LT_167 /><ref name=LT_150 /><ref name=LT_148 /><ref name=LT_24 /><ref name=LT_6 />
 | [[Tactical Atomic Demolition Munition]] (TADM) and Talos SAM warhead.
 |-
 ! ''Saturn''{{anchor|Saturn}}
 | {{dts|1957|8|10}} 00:59:55.1
 | [[Nevada National Security Site|NTS]] Area U12c.02 {{coord|37.19355|-116.20059|name=Saturn|display=inline}}
 | {{sort|001191|}}{{convert|1231|m|abbr=on}}–{{convert|39.01|m|abbr=on}}
 | tunnel,<br />safety experiment
 | [[W45 (nuclear warhead)|XW-45X1]]
 | style="text-align:center;" | {{sort|000000000|50&nbsp;kg}}
 | 
 | <ref name=LT_1 /><ref name=LT_150 /><ref name=LT_24 /><ref name=LT_6 /><ref name=LT_34 />
 | [[Nuclear weapons design#One-point safety|One-point safety experiment]]; first shot in a Rainier tunnel.
 |-
 ! ''Shasta''{{anchor|Shasta}}
 | {{dts|1957|8|18}} 12:00:00.0
 | [[Nevada National Security Site|NTS]] Area 2a {{coord|37.128|-116.1073|name=Shasta|display=inline}}
 | {{sort|001489|}}{{convert|1339|m|abbr=on}} + {{convert|150|m|abbr=on}}
 | tower,<br />weapons development
 | Swan
 | style="text-align:center;" | {{sort|000170000|17&nbsp;kt}}
 | I-131 venting detected, {{convert|2.5|MCi|PBq|abbr=on}}
 | <ref name=LT_1 /><ref name=LT_167 /><ref name=LT_150 /><ref name=LT_148 /><ref name=LT_6 />
 | 2 stage thermonuclear design.
 |-
 ! ''Doppler''{{anchor|Doppler}}
 | {{dts|1957|8|23}} 12:30:00.1
 | [[Nevada National Security Site|NTS]] Area B7b ~ {{coord|37.0866|-116.0245|name=Doppler|display=inline}}
 | {{sort|001742|}}{{convert|1282|m|abbr=on}} + {{convert|460|m|abbr=on}}
 | balloon,<br />weapons development
 | [[W34 (nuclear warhead)|XW-34]] ?
 | style="text-align:center;" | {{sort|000110000|11&nbsp;kt}}
 | I-131 venting detected, {{convert|1.7|MCi|PBq|abbr=on}}
 | <ref name=LT_1 /><ref name=LT_167 /><ref name=LT_150 /><ref name=LT_148 /><ref name=LT_24 /><ref name=LT_6 />
 | LASL gas boosted implosion device, possible XW-34 test.
 |-
 ! ''Pascal-B''{{anchor|Pascal-B}}
 | {{dts|1957|8|27}} 22:35:00.0
 | [[Nevada National Security Site|NTS]] Area U3d {{coord|37.04903|-116.0347|name=Pascal-B|display=inline}}
 | {{sort|001079|}}{{convert|1229|m|abbr=on}}–{{convert|150|m|abbr=on}}
 | underground shaft,<br />safety experiment
 | 
 | style="text-align:center;" | {{sort|000003000|300&nbsp;t}}
 | 
 | <ref name=LT_1 /><ref name=LT_167 /><ref name=LT_150 /><ref name=LT_148 /><ref name=LT_6 />
 | Shaft safety experiment, failed. Sent the shaft cap weighing several hundred pounds (1 ton) at velocity very roughly pre-calculated as {{convert|66|km/s|abbr=on}}; popular claims of it reaching space are disputed, see section above.
|-
 ! ''Franklin Prime''{{anchor|Franklin Prime}}
 | {{dts|1957|8|30}} 12:39:59.9
 | [[Nevada National Security Site|NTS]] Area B7b ~ {{coord|37.0866|-116.0245|name=Franklin Prime|display=inline}}
 | {{sort|001512|}}{{convert|1282|m|abbr=on}} + {{convert|230|m|abbr=on}}
 | balloon,<br />weapons development
 | 
 | style="text-align:center;" | {{sort|000047000|4.7&nbsp;kt}}
 | I-131 venting detected, {{convert|690|kCi|TBq|abbr=on}}
 | <ref name=LT_1 /><ref name=LT_167 /><ref name=LT_150 /><ref name=LT_148 /><ref name=LT_24 /><ref name=LT_6 />
 | Retest of ''Franklin'' with more U-235.
 |-
 ! ''Smoky''{{anchor|Smoky}}
 | {{dts|1957|8|31}} 12:30:00.0
 | [[Nevada National Security Site|NTS]] Area T2c {{coord|37.18712|-116.06887|name=Smoky|display=inline}}
 | {{sort|001577|}}{{convert|1367|m|abbr=on}} + {{convert|210|m|abbr=on}}
 | tower,<br />weapons development
 | [[B41 nuclear bomb|TX-41]] primary
 | style="text-align:center;" | {{sort|000440000|44&nbsp;kt}}
 | I-131 venting detected, {{convert|6.4|MCi|PBq|abbr=on}}
 | <ref name=LT_1 /><ref name=LT_167 /><ref name=LT_150 /><ref name=LT_148 /><ref name=LT_24 /><ref name=LT_6 /><ref name=LT_178 />
 | 2 stages of 3 stage thermonuke, similar to ''Redwing/Zuni'' and ''Tewa''. Desert Rock VII; 3000 servicemen irradiated; 10 of 4 expected leukemia cases in the 80s. Last pristine air-drop location at the NTS.
 |-
 ! ''Galileo''{{anchor|Galileo}}
 | {{dts|1957|9|2}} 12:40:00.0
 | [[Nevada National Security Site|NTS]] Area T1 {{coord|37.053|-116.1034|name=Galileo|display=inline}}
 | {{sort|001444|}}{{convert|1294|m|abbr=on}} + {{convert|150|m|abbr=on}}
 | tower,<br />weapons development
 | 
 | style="text-align:center;" | {{sort|000110000|11&nbsp;kt}}
 | I-131 venting detected, {{convert|1.9|MCi|PBq|abbr=on}}
 | <ref name=LT_1 /><ref name=LT_167 /><ref name=LT_150 /><ref name=LT_148 /><ref name=LT_6 />
 | LASL diagnostic/exploratory test of boosted fission device. Desert Rock VIII.
 |-
 ! ''Wheeler''{{anchor|Wheeler}}
 | {{dts|1957|9|6}} 12:45:00.0
 | [[Nevada National Security Site|NTS]] Area B9a ~ {{coord|37.1347|-116.0417|name=Wheeler|display=inline}}
 | {{sort|001436|}}{{convert|1286|m|abbr=on}} + {{convert|150|m|abbr=on}}
 | balloon,<br />weapons development
 | [[XW-51]] ?
 | style="text-align:center;" | {{sort|000001970|197&nbsp;t}}
 | I-131 venting detected, {{convert|27|kCi|TBq|abbr=on}}
 | <ref name=LT_1 /><ref name=LT_167 /><ref name=LT_150 /><ref name=LT_24 /><ref name=LT_6 />
 | Retest of redesigned ''Lassen'' device, possible XW-51 air-to-air warhead progenitor.
 |-
 ! ''Coulomb-B''{{anchor|Coulomb-B}}
 | {{dts|1957|9|6}} 20:05:00.6
 | [[Nevada National Security Site|NTS]] Area S3g {{coord|37.0427|-116.0277|name=Coulomb-B|display=inline}}
 | {{sort|001225|}}{{convert|1225|m|abbr=on}} + 0
 | dry surface,<br />safety experiment
 | [[W31|XW-31]]
 | style="text-align:center;" | {{sort|000003000|300&nbsp;t}}
 | I-131 venting detected, {{convert|42|kCi|TBq|abbr=on}}
 | <ref name=LT_1 /><ref name=LT_167 /><ref name=LT_150 /><ref name=LT_24 /><ref name=LT_6 />
 | One-point safety experiment, high limits test, expected 1&nbsp;kg TNT equivalent, max .2&nbsp;kt - failure.
 |-
 ! ''Laplace''{{anchor|Laplace}}
 | {{dts|1957|9|8}} 12:59:59.8
 | [[Nevada National Security Site|NTS]] Area B7b ~ {{coord|37.0866|-116.0245|name=Laplace|display=inline}}
 | {{sort|001512|}}{{convert|1282|m|abbr=on}} + {{convert|230|m|abbr=on}}
 | balloon,<br />weapons development
 | [[W33 (nuclear weapon)|XW-33]] "Fleegle"
 | style="text-align:center;" | {{sort|000010000|1&nbsp;kt}}
 | I-131 venting detected, {{convert|140|kCi|TBq|abbr=on}}
 | <ref name=LT_1 /><ref name=LT_167 /><ref name=LT_150 /><ref name=LT_6 />
 | Oralloy gun-type device, for a nuclear artillery shell. The third of only four gun-type weapons, with ''Little Boy, Grable'' and ''Aardvark''.
 |-
 ! ''Fizeau''{{anchor|Fizeau}}
 | {{dts|1957|9|14}} 16:44:59.8
 | [[Nevada National Security Site|NTS]] Area T3b {{coord|37.0336|-116.0323|name=Fizeau|display=inline}}
 | {{sort|001370|}}{{convert|1220|m|abbr=on}} + {{convert|150|m|abbr=on}}
 | tower,<br />weapons development
 | [[W34 (nuclear warhead)|XW-34]] ?
 | style="text-align:center;" | {{sort|000110000|11&nbsp;kt}}
 | I-131 venting detected, {{convert|1.7|MCi|PBq|abbr=on}}
 | <ref name=LT_1 /><ref name=LT_167 /><ref name=LT_150 /><ref name=LT_148 /><ref name=LT_24 /><ref name=LT_6 />
 | LASL boosted fission device. Possibly a test of the XW-34 depth bomb.
 |-
 ! ''Newton''{{anchor|Newton}}
 | {{dts|1957|9|16}} 12:49:59.9
 | [[Nevada National Security Site|NTS]] Area B7a ~ {{coord|37.0866|-116.0245|name=Newton|display=inline}}
 | {{sort|001742|}}{{convert|1282|m|abbr=on}} + {{convert|460|m|abbr=on}}
 | balloon,<br />weapons development
 | [[W31|XW-31]]
 | style="text-align:center;" | {{sort|000120000|12&nbsp;kt}}
 | I-131 venting detected, {{convert|2.1|MCi|PBq|abbr=on}}
 | <ref name=LT_1 /><ref name=LT_167 /><ref name=LT_150 /><ref name=LT_148 /><ref name=LT_24 /><ref name=LT_6 />
 | LASL test of XW-31 variant, boosted primary in thermonuclear system mockup. Sounds like a fizzle, but no one says so.
 |-
 ! ''Rainier''{{anchor|Rainier}}
 | {{dts|1957|9|19}} 16:59:59.45
 | [[Nevada National Security Site|NTS]] Area U12b {{coord|37.19573|-116.20404|name=Rainier|display=inline}}
 | {{sort|002022|}}{{convert|2295|m|abbr=on}}–{{convert|272.8|m|abbr=on}}
 | tunnel,<br />weapons development
 | [[W25 (nuclear warhead)|W-25]]
 | style="text-align:center;" | {{sort|000017000|1.7&nbsp;kt}}
 | 
 | <ref name=LT_1 /><ref name=LT_167 /><ref name=LT_150 /><ref name=LT_148 /><ref name=LT_24 /><ref name=LT_6 /><ref name=LT_34 />
 | First US underground nuclear test. Evaluate containment and detection of underground testing, formed a chimney of broken rock which provided data on possible underground engineering applications of nuclear explosives.
 |-
 ! ''Whitney''{{anchor|Whitney}}
 | {{dts|1957|9|23}} 12:29:59.8
 | [[Nevada National Security Site|NTS]] Area T2 {{coord|37.1383|-116.1184|name=Whitney|display=inline}}
 | {{sort|001520|}}{{convert|1370|m|abbr=on}} + {{convert|150|m|abbr=on}}
 | tower,<br />weapons development
 | [[W27 warhead|W27]] primary
 | style="text-align:center;" | {{sort|000190000|19&nbsp;kt}}
 | I-131 venting detected, {{convert|2.9|MCi|PBq|abbr=on}}
 | <ref name=LT_1 /><ref name=LT_167 /><ref name=LT_150 /><ref name=LT_24 /><ref name=LT_6 />
 | Test of boosted Swan primary in W-27 thermonuclear system mockup.
 |-
 ! ''Charleston''{{anchor|Charleston}}
 | {{dts|1957|9|28}} 12:59:59.9
 | [[Nevada National Security Site|NTS]] Area B9a ~ {{coord|37.1347|-116.0417|name=Charleston|display=inline}}
 | {{sort|001745|}}{{convert|1285|m|abbr=on}} + {{convert|460|m|abbr=on}}
 | balloon,<br />weapons development
 | 
 | style="text-align:center;" | {{sort|000120000|12&nbsp;kt}}
 | I-131 venting detected, {{convert|1.8|MCi|PBq|abbr=on}}
 | <ref name=LT_1 /><ref name=LT_167 /><ref name=LT_150 /><ref name=LT_148 /><ref name=LT_6 />
 | UCRL test of a small "clean" tactical 2-stage thermonuclear device. Device fizzled when second stage failed to fire.
 |-
 ! ''Morgan''{{anchor|Morgan}}
 | {{dts|1957|10|7}} 13:00:00.1
 | [[Nevada National Security Site|NTS]] Area B9a ~ {{coord|37.1347|-116.0417|name=Morgan|display=inline}}
 | {{sort|001435|}}{{convert|1285|m|abbr=on}} + {{convert|150|m|abbr=on}}
 | balloon,<br />weapons development
 | [[W45 (nuclear warhead)|XW-45X1]] Swan/<wbr>Flamingo
 | style="text-align:center;" | {{sort|000080000|8&nbsp;kt}}
 | I-131 venting detected, {{convert|1.2|MCi|PBq|abbr=on}}
 | <ref name=LT_1 /><ref name=LT_167 /><ref name=LT_150 /><ref name=LT_24 /><ref name=LT_6 />
 | 
 |}