Operation Mandrel

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Operation Mandrel
NTS - Underground Testing 009.jpg
Mandrel Mint Leaf tunnel reentry team
Information
Country United States
Test site Amchitka Island, Alaska; near Parachute, Colorado; NTS Area 12, Rainier Mesa; NTS Area 16, Shoshone Mountain; NTS Area 19, 20, Pahute Mesa; NTS Areas 5, 11, Frenchman Flat; NTS, Areas 1-4, 6-10, Yucca Flat
Period 1969-1970
Number of tests 52
Test type underground shaft, underground tunnel
Max. yield 1.9 megatonnes of TNT (7.9 PJ)
Navigation
Previous test series Operation Bowline
Next test series Operation Emery

The United States's Mandrel nuclear test series[1] was a group of 52 nuclear tests conducted in 1969-1970. These tests [note 1] followed the Operation Bowline series and preceded the Operation Emery series.

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United States' Mandrel series tests and detonations
Name [note 2] Date time (UT) Local time zone [note 3][2] Location [note 4] Elevation + height [note 5] Delivery [note 6]
Purpose [note 7]
Device [note 8] Yield [note 9] Fallout [note 10] References Notes
Ildrim 16 July 1969 13:02:30.04 PST (-8 hrs)
NTS Area U2au Lua error in package.lua at line 80: module 'strict' not found. 1,256 m (4,121 ft) - 410.26 m (1,346.0 ft) underground shaft,
weapons development
20 kt [1][3][4][5][6]
Hutch 16 July 1969 14:55:00.04 PST (-8 hrs)
NTS Area U2df Lua error in package.lua at line 80: module 'strict' not found. 1,300 m (4,300 ft) - 548.64 m (1,800.0 ft) underground shaft,
weapons development
120 kt Venting detected, 1.1 kCi (41 TBq) [1][4][5][6][7][8]
Spider - 1 14 August 1969 14:30:00.04 PST (-8 hrs)
NTS Area U2bp1 Lua error in package.lua at line 80: module 'strict' not found. 1,292 m (4,239 ft) - 207.26 m (680.0 ft) underground shaft,
weapons development
1 kt Venting detected, 2 Ci (74 GBq) [1][4][5][6][7][8] Simultaneous, separate holes.
Spider - 2 14 August 1969 14:30:00.04 PST (-8 hrs)
NTS Area U2bp2 Lua error in package.lua at line 80: module 'strict' not found. 1,291 m (4,236 ft) - 213 m (699 ft) underground shaft,
weapons development
1 kt [1][5][6][7] Simultaneous, separate holes.
Horehound 27 August 1969 13:45:00.04 PST (-8 hrs)
NTS Area U3gm Lua error in package.lua at line 80: module 'strict' not found. 1,174 m (3,852 ft) - 331.83 m (1,088.7 ft) underground shaft,
weapons development
less than 20 kt [1][5][6]
Pliers 27 August 1969 13:45:00.04 PST (-8 hrs)
NTS Area U3gn Lua error in package.lua at line 80: module 'strict' not found. 1,187 m (3,894 ft) - 238.87 m (783.7 ft) underground shaft,
weapons development
10 kt Venting detected on site [1][4][5][6][7][8]
Rulison 10 September 1969 21:00:00.01 MST (-7 hrs)
near Parachute, Colorado Lua error in package.lua at line 80: module 'strict' not found. 2,498 m (8,196 ft) - 2,570 m (8,430 ft) underground shaft,
peaceful research
40 kt Venting detected off site [1][6][8] Plowshare - gas stimulation experiment.
Minute Steak 12 September 1969 18:02:20.42 PST (-8 hrs)
NTS Area U11f Lua error in package.lua at line 80: module 'strict' not found. 1,007 m (3,304 ft) - 264.26 m (867.0 ft) underground shaft,
weapon effect
5 kt Venting detected on site, 8.4 kCi (310 TBq) [1][4][5][6][7][8]
Jorum 16 September 1969 14:30:00.04 PST (-8 hrs)
NTS Area U20e - Lua error in package.lua at line 80: module 'strict' not found. 1,898 m (6,227 ft) - 1,158.24 m (3,800.0 ft) underground shaft,
weapons development
800 kt [1][3][5][6][9]
Kyack - 1 20 September 1969 14:30:00.04 PST (-8 hrs)
NTS Area U2bq1 Lua error in package.lua at line 80: module 'strict' not found. 1,296 m (4,252 ft) - 192.02 m (630.0 ft) underground shaft,
weapons development
800 t Venting detected on site [1][3][5][6][7][10] Simultaneous, separate holes.
Kyack - 2 20 September 1969 14:30:00.04 PST (-8 hrs)
NTS Area U2bq2 Lua error in package.lua at line 80: module 'strict' not found. 1,293 m (4,242 ft) - 192 m (630 ft) underground shaft,
weapons development
1 kt Venting detected on site, 510 Ci (19,000 GBq) [1][5][6][7][8][10] Simultaneous, separate holes.
Seaweed - 1 1 October 1969 14:30:00.04 PST (-8 hrs)
NTS Area U3hk3 Lua error in package.lua at line 80: module 'strict' not found. 1,184 m (3,885 ft) - 118.43 m (388.5 ft) underground shaft,
safety experiment
less than 20 kt Venting detected on site, 0.00000005 Ci (1.9×10−6 GBq) [1][5][6][7] Simultaneous, separate holes.
Seaweed - 2 1 October 1969 14:30:00.04 PST (-8 hrs)
NTS Area U3hkf Lua error in package.lua at line 80: module 'strict' not found. 1,183 m (3,881 ft) - 118 m (387 ft) underground shaft,
safety experiment
less than 20 kt Venting detected on site [1][5][6][7][8] Simultaneous, separate holes.
Seaweed - 3 1 October 1969 14:30:00.04 PST (-8 hrs)
NTS Area U3hkc Lua error in package.lua at line 80: module 'strict' not found. 1,184 m (3,885 ft) + underground shaft,
safety experiment
less than 20 kt Venting detected on site [1][5][6][7] Simultaneous, separate holes.
Milrow 2 October 1969 22:06:00.04 BST (-11 hrs)
Amchitka Island, Alaska Lua error in package.lua at line 80: module 'strict' not found. 40 m (130 ft) - 1,220 m (4,000 ft) underground shaft,
weapons development
1 Mt [1][4][6] Calibration for Grommet Cannikin test. Was initially named "Ganja", until someone in the DoE got wise to it.
Pipkin 8 October 1969 14:30:00.14 PST (-8 hrs)
NTS Area U20b Lua error in package.lua at line 80: module 'strict' not found. 1,965 m (6,447 ft) - 624.84 m (2,050.0 ft) underground shaft,
weapons development
200 kt Venting detected, 6 Ci (220 GBq) [1][3][4][5][6][7]
Seaweed B 16 October 1969 14:00:00.04 PST (-8 hrs)
NTS Area U3hkd Lua error in package.lua at line 80: module 'strict' not found. 1,185 m (3,888 ft) - 118.55 m (388.9 ft) underground shaft,
safety experiment
less than 20 kt Venting detected on site, 0.0000002 Ci (7.4×10−6 GBq) [1][5][6][7]
Cruet 29 October 1969 19:30:00.04 PST (-8 hrs)
NTS Area U2cn Lua error in package.lua at line 80: module 'strict' not found. 1,372 m (4,501 ft) - 263.65 m (865.0 ft) underground shaft,
weapons development
11 kt [1][4][5][6]
Pod - 1 29 October 1969 20:00:00.04 PST (-8 hrs)
NTS Area U2ch Lua error in package.lua at line 80: module 'strict' not found. 1,397 m (4,583 ft) - 266.7 m (875 ft) underground shaft,
weapons development
16.7 kt Venting detected on site, 3.9 kCi (140 TBq) [1][5][6][7][8] Simultaneous, separate holes.
Pod - 2 29 October 1969 20:00:00.04 PST (-8 hrs)
NTS Area U2ci Lua error in package.lua at line 80: module 'strict' not found. 1,464 m (4,803 ft) + underground shaft,
weapons development
16.7 kt Venting detected on site [1][5][6][7] Simultaneous, separate holes.
Pod - 3 29 October 1969 20:00:00.04 PST (-8 hrs)
NTS Area U2dj Lua error in package.lua at line 80: module 'strict' not found. 1,448 m (4,751 ft) + underground shaft,
weapons development
16.7 kt Venting detected on site [1][5][6][7] Simultaneous, separate holes.
Pod - 4 29 October 1969 20:00:00.04 PST (-8 hrs)
NTS Area U2ck Lua error in package.lua at line 80: module 'strict' not found. 1,424 m (4,672 ft) - 312 m (1,024 ft) underground shaft,
weapons development
16.7 kt Venting detected on site [1][5][6][7][8] Simultaneous, separate holes.
Calabash 29 October 1969 22:01:51.04 PST (-8 hrs)
NTS Area U2av Lua error in package.lua at line 80: module 'strict' not found. 1,283 m (4,209 ft) - 624.84 m (2,050.0 ft) underground shaft,
weapons development
110 kt [1][4][5][6][9]
Scuttle 13 November 1969 15:15:00.13 PST (-8 hrs)
NTS Area U2bh Lua error in package.lua at line 80: module 'strict' not found. 1,312 m (4,304 ft) - 164.59 m (540.0 ft) underground shaft,
weapons development
1.7 kt Venting detected, 210 Ci (7,800 GBq) [1][5][6][7][8]
Piccalilli 21 November 1969 14:52:00.04 PST (-8 hrs)
NTS Area U3fc Lua error in package.lua at line 80: module 'strict' not found. 1,195 m (3,921 ft) - 393.8 m (1,292 ft) underground shaft,
weapons development
22 kt [1][4][5][6][9]
Planer 21 November 1969 14:52:00.08 PST (-8 hrs)
NTS Area U3ei Lua error in package.lua at line 80: module 'strict' not found. 1,183 m (3,881 ft) - 377.84 m (1,239.6 ft) underground shaft,
weapons development
20 kt [1][5][6][9]
Diesel Train 5 December 1969 17:00:00.04 PST (-8 hrs)
NTS Area U12e.11 Lua error in package.lua at line 80: module 'strict' not found. 2,207 m (7,241 ft) - 419.15 m (1,375.2 ft) underground tunnel,
weapon effect
20 kt [1][3][5][6][9]
Culantro - 1 10 December 1969 15:00:00.04 PST (-8 hrs)
NTS Area U3hia Lua error in package.lua at line 80: module 'strict' not found. 1,181 m (3,875 ft) - 134.13 m (440.1 ft) underground shaft,
weapons development
less than 20 kt [1][5][6] Simultaneous, separate holes.
Culantro - 2 10 December 1969 15:00:00.04 PST (-8 hrs)
NTS Area U3hib Lua error in package.lua at line 80: module 'strict' not found. 1,182 m (3,878 ft) + underground shaft,
weapons development
less than 20 kt [1][5][6] Simultaneous, separate holes.
Tun - 1 10 December 1969 15:30:00.07 PST (-8 hrs)
NTS Area U10am1 Lua error in package.lua at line 80: module 'strict' not found. 1,323 m (4,341 ft) - 193.55 m (635.0 ft) underground shaft,
weapons development
2.5 kt Venting detected on site [1][3][5][6][7][10] Simultaneous, separate holes.
Tun - 2 10 December 1969 15:30:00.07 PST (-8 hrs)
NTS Area U10am2 Lua error in package.lua at line 80: module 'strict' not found. 1,324 m (4,344 ft) - 194 m (636 ft) underground shaft,
weapons development
2 kt Venting detected on site, 72 Ci (2,700 GBq) [1][5][6][7][8][10] Simultaneous, separate holes.
Tun - 3 10 December 1969 15:30:00.07 PST (-8 hrs)
NTS Area U10am3 Lua error in package.lua at line 80: module 'strict' not found. 1,319 m (4,327 ft) - 194 m (636 ft) underground shaft,
weapons development
2 kt Venting detected on site [1][5][6][7][8][10] Simultaneous, separate holes.
Tun - 4 10 December 1969 15:30:00.07 PST (-8 hrs)
NTS Area U10am4 Lua error in package.lua at line 80: module 'strict' not found. 1,320 m (4,330 ft) - 256 m (840 ft) underground shaft,
weapons development
3 kt Venting detected on site [1][5][6][7][8][10] Simultaneous, separate holes.
Grape A 17 December 1969 15:00:00.04 PST (-8 hrs)
NTS Area U7s Lua error in package.lua at line 80: module 'strict' not found. 1,274 m (4,180 ft) - 550.67 m (1,806.7 ft) underground shaft,
weapons development
89 kt [1][4][5][6][9]
Lovage 17 December 1969 15:15:00.04 PST (-8 hrs)
NTS Area U3fe Lua error in package.lua at line 80: module 'strict' not found. 1,181 m (3,875 ft) - 378.05 m (1,240.3 ft) underground shaft,
weapons development
16 kt [1][4][5][6][9]
Terrine-White - 1 18 December 1969 19:00:00.04 PST (-8 hrs)
NTS Area U9bi1 Lua error in package.lua at line 80: module 'strict' not found. 1,264 m (4,147 ft) - 461.77 m (1,515.0 ft) underground shaft,
weapons development
38 kt Venting detected, 48 Ci (1,800 GBq) [1][5][6][7][8][9] Simultaneous, separate holes.
Terrine-Yellow - 2 18 December 1969 19:00:00.04 PST (-8 hrs)
NTS Area U9bi2 Lua error in package.lua at line 80: module 'strict' not found. 1,277 m (4,190 ft) - 417 m (1,368 ft) underground shaft,
weapons development
unknown yield Venting detected [1][5][6][7][8] Simultaneous, separate holes.
Fob-Blue - 3 23 January 1970 16:30:00.21 PST (-8 hrs)
NTS Area U9iy27 Lua error in package.lua at line 80: module 'strict' not found. 1,273 m (4,177 ft) + underground shaft,
weapons development
less than 20 kt [1][5][6] Simultaneous, separate holes.
Fob-Green - 1 23 January 1970 16:30:00.21 PST (-8 hrs)
NTS Area U9iv27 Lua error in package.lua at line 80: module 'strict' not found. 1,266 m (4,154 ft) - 266.7 m (875 ft) underground shaft,
weapons development
8 kt [1][4][5][6] Simultaneous, separate holes.
Fob-Red - 2 23 January 1970 16:30:00.21 PST (-8 hrs)
NTS Area U9iv24 Lua error in package.lua at line 80: module 'strict' not found. 1,263 m (4,144 ft) + underground shaft,
weapons development
less than 20 kt [1][5][6] Simultaneous, separate holes.
Ajo 30 January 1970 17:00:00.04 PST (-8 hrs)
NTS Area U3gd Lua error in package.lua at line 80: module 'strict' not found. 1,191 m (3,907 ft) - 304.11 m (997.7 ft) underground shaft,
weapons development
20 kt [1][3][4][5][6]
Belen 4 February 1970 17:00:00.07 PST (-8 hrs)
NTS Area U3br Lua error in package.lua at line 80: module 'strict' not found. 1,206 m (3,957 ft) - 420.8 m (1,381 ft) underground shaft,
weapons development
97 kt [1][5][6][9][10]
Grape B 4 February 1970 17:00:00.04 PST (-8 hrs)
NTS Area U7v Lua error in package.lua at line 80: module 'strict' not found. 1,269 m (4,163 ft) - 554.46 m (1,819.1 ft) underground shaft,
weapons development
120 kt [1][4][5][6][9]
Labis 5 February 1970 15:00:00.04 PST (-8 hrs)
NTS Area U10an Lua error in package.lua at line 80: module 'strict' not found. 1,286 m (4,219 ft) - 441.96 m (1,450.0 ft) underground shaft,
weapons development
25 kt [1][4][5][6]
Diana Mist 11 February 1970 19:15:00.04 PST (-8 hrs)
NTS Area U12n.06 Lua error in package.lua at line 80: module 'strict' not found. 2,229 m (7,313 ft) - 402.02 m (1,319.0 ft) underground tunnel,
weapon effect
12 kt [1][3][5][6][9]
Cumarin 25 February 1970 14:28:38.04 PST (-8 hrs)
NTS Area U3gz Lua error in package.lua at line 80: module 'strict' not found. 1,206 m (3,957 ft) - 408.51 m (1,340.3 ft) underground shaft,
weapons development
51 kt [1][4][5][6][9]
Yannigan-Blue - 2 26 February 1970 15:30:00.04 PST (-8 hrs)
NTS Area U2ay3 Lua error in package.lua at line 80: module 'strict' not found. 1,258 m (4,127 ft) - 394 m (1,293 ft) underground shaft,
weapons development
20 kt Venting detected [1][5][6][7][8][10] Simultaneous, separate holes.
Yannigan-Red - 1 26 February 1970 15:30:00.04 PST (-8 hrs)
NTS Area U2ay1 Lua error in package.lua at line 80: module 'strict' not found. 1,258 m (4,127 ft) - 388.62 m (1,275.0 ft) underground shaft,
weapons development
70 kt Venting detected, 320 Ci (12,000 GBq) [1][3][4][5][6][7] Simultaneous, separate holes.
Yannigan-White - 3 26 February 1970 15:30:00.04 PST (-8 hrs)
NTS Area U2ay2 Lua error in package.lua at line 80: module 'strict' not found. 1,261 m (4,137 ft) - 363 m (1,191 ft) underground shaft,
weapons development
30 kt Venting detected [1][5][6][7][8][10] Simultaneous, separate holes.
Cyathus 6 March 1970 14:24:00.94 PST (-8 hrs)
NTS Area U8b Lua error in package.lua at line 80: module 'strict' not found. 1,353 m (4,439 ft) - 289.56 m (950.0 ft) underground shaft,
weapons development
8.7 kt Venting detected, less than 46 Ci (1,700 GBq) [1][4][5][6][7][8]
Arabis-Blue - 3 6 March 1970 15:00:00.21 PST (-8 hrs)
NTS Area U9itsz26 Lua error in package.lua at line 80: module 'strict' not found. 1,265 m (4,150 ft) + underground shaft,
safety experiment
less than 20 kt [1][5][6] Simultaneous, separate holes.
Arabis-Green - 2 6 March 1970 15:00:00.21 PST (-8 hrs)
NTS Area U9itsx28 Lua error in package.lua at line 80: module 'strict' not found. 1,270 m (4,170 ft) + underground shaft,
weapons development
less than 20 kt [1][5][6] Simultaneous, separate holes.
Arabis-Red - 1 6 March 1970 15:00:00.21 PST (-8 hrs)
NTS Area U9itsv26 Lua error in package.lua at line 80: module 'strict' not found. 1,276 m (4,186 ft) - 249.94 m (820.0 ft) underground shaft,
weapons development
3.5 kt [1][4][5][6] Simultaneous, separate holes.
Jal 19 March 1970 14:03:30.04 PST (-8 hrs)
NTS Area U3hh Lua error in package.lua at line 80: module 'strict' not found. 1,178 m (3,865 ft) - 301.39 m (988.8 ft) underground shaft,
weapons development
6 kt [1][3][4][5][6]
Shaper 23 March 1970 23:05:00.04 PST (-8 hrs)
NTS Area U7r Lua error in package.lua at line 80: module 'strict' not found. 1,252 m (4,108 ft) - 560.44 m (1,838.7 ft) underground shaft,
weapons development
89 kt [1][4][5][6][9]
Handley 26 March 1970 19:00:00.2 PST (-8 hrs)
NTS Area U20m Lua error in package.lua at line 80: module 'strict' not found. 1,772 m (5,814 ft) - 1,209.14 m (3,967.0 ft) underground shaft,
weapons development
1.9 Mt [1][3][4][5][6]
Snubber 21 April 1970 14:30:00.04 PST (-8 hrs)
NTS Area U3ev2s Lua error in package.lua at line 80: module 'strict' not found. 1,253 m (4,111 ft) - 343.5 m (1,127 ft) underground shaft,
weapon effect
12.7 kt Venting detected off site, 55 kCi (2,000 TBq) [1][3][5][6][7][8]
Can-Green - 1 21 April 1970 15:00:00.04 PST (-8 hrs)
NTS Area U2dd1 Lua error in package.lua at line 80: module 'strict' not found. 1,266 m (4,154 ft) - 274.32 m (900.0 ft) underground shaft,
weapons development
20 kt [1][3][4][5][6] Simultaneous, separate holes.
Can-Red - 2 21 April 1970 15:00:00.04 PST (-8 hrs)
NTS Area U2dd4 Lua error in package.lua at line 80: module 'strict' not found. 1,268 m (4,160 ft) + underground shaft,
weapons development
20 kt [1][5][6] Simultaneous, separate holes.
Beebalm 1 May 1970 14:13:00.04 PST (-8 hrs)
NTS Area U3fn Lua error in package.lua at line 80: module 'strict' not found. 1,209 m (3,967 ft) - 390.21 m (1,280.2 ft) underground shaft,
weapons development
1 kt [1][3][5][6][9]
Hod-C (Blue) - 3 1 May 1970 14:25:00.0 PST (-8 hrs)
NTS Area U9iz25 Lua error in package.lua at line 80: module 'strict' not found. 1,276 m (4,186 ft) + underground shaft,
safety experiment
less than 20 kt [1][6][7]
Hod-A (Green) - 1 1 May 1970 14:40:00.17 PST (-8 hrs)
NTS Area U9itsx23 Lua error in package.lua at line 80: module 'strict' not found. 1,268 m (4,160 ft) - 265.18 m (870.0 ft) underground shaft,
weapons development
9 kt Venting detected on site, 1 Ci (37 GBq) [1][3][4][5][6][7] Simultaneous, separate holes.
Hod-B (Red) - 2 1 May 1970 14:40:00.17 PST (-8 hrs)
NTS Area U9itsx20 Lua error in package.lua at line 80: module 'strict' not found. 1,266 m (4,154 ft) - 241 m (791 ft) underground shaft,
weapons development
4 kt Venting detected [1][5][6][7][8][10]
Mint Leaf 5 May 1970 15:30:00.17 PST (-8 hrs)
NTS Area U12t.01 Lua error in package.lua at line 80: module 'strict' not found. 2,094 m (6,870 ft) - 396.24 m (1,300.0 ft) underground tunnel,
weapon effect
20 kt Venting detected off site, 960 kCi (36,000 TBq) [1][3][5][6][7][8]
Diamond Dust 12 May 1970 14:00:00.04 PST (-8 hrs)
NTS Area U16a.05 Lua error in package.lua at line 80: module 'strict' not found. 1,899 m (6,230 ft) - 221.89 m (728.0 ft) underground tunnel,
joint verification
less than 20 kt Venting detected, 5 Ci (180 GBq) [1][5][6][7][8] Designed to test detection of underground nuclear tests; see Vela Uniform.
Cornice-Green - 2 15 May 1970 13:30:00.17 PST (-8 hrs)
NTS Area U10ap3 Lua error in package.lua at line 80: module 'strict' not found. 1,286 m (4,219 ft) + underground shaft,
weapons development
40 kt [1][5][6] Simultaneous, separate holes.
Cornice-Yellow - 1 15 May 1970 13:30:00.17 PST (-8 hrs)
NTS Area U10ap1 Lua error in package.lua at line 80: module 'strict' not found. 1,293 m (4,242 ft) - 390.14 m (1,280.0 ft) underground shaft,
weapons development
45 kt [1][3][4][5][6] Simultaneous, separate holes.
Manzanas 21 May 1970 14:00:00.04 PST (-8 hrs)
NTS Area U3gr Lua error in package.lua at line 80: module 'strict' not found. 1,194 m (3,917 ft) - 240.65 m (789.5 ft) underground shaft,
weapons development
1 kt Venting detected on site, less than 0.2 Ci (7.4 GBq) [1][3][5][6][7][8]
Morrones 21 May 1970 14:15:00.03 PST (-8 hrs)
NTS Area U3ei Lua error in package.lua at line 80: module 'strict' not found. 1,237 m (4,058 ft) - 482.72 m (1,583.7 ft) underground shaft,
weapons development
29 kt [1][5][6][9]
Hudson Moon 26 May 1970 14:16:00.17 PST (-8 hrs)
NTS Area U12e.12 Lua error in package.lua at line 80: module 'strict' not found. 2,274 m (7,461 ft) - 422.45 m (1,386.0 ft) underground tunnel,
weapon effect
9 kt Venting detected on site, 1.3 kCi (48 TBq) [1][3][5][6][7][8]
Flask-Green - 1 26 May 1970 15:00:00.05 PST (-8 hrs)
NTS Area U2az1 Lua error in package.lua at line 80: module 'strict' not found. 1,251 m (4,104 ft) - 529 m (1,736 ft) underground shaft,
peaceful research
105 kt Venting detected, 63 Ci (2,300 GBq) [1][4][5][6][7][8] Simultaneous, Separate holes. Project Plowshare - develop clean devices for hard rock excavation.
Flask-Red - 3 26 May 1970 15:00:00.05 PST (-8 hrs)
NTS Area U2az3 Lua error in package.lua at line 80: module 'strict' not found. 1,259 m (4,131 ft) - 152.4 m (500 ft) underground shaft,
peaceful research
35 t Venting detected [1][5][6][7][8] Simultaneous, Separate holes. Project Plowshare - develop clean devices for hard rock excavation.
Flask-Yellow - 2 26 May 1970 15:00:00.05 PST (-8 hrs)
NTS Area U2az2 Lua error in package.lua at line 80: module 'strict' not found. 1,259 m (4,131 ft) - 335 m (1,099 ft) underground shaft,
peaceful research
90 t Venting detected [1][5][6][7][8] Simultaneous, Separate holes. Project Plowshare - develop clean devices for hard rock excavation.
Piton C 28 May 1970 11:45:00.2 PST (-8 hrs)
NTS Area U9itsaa2 Lua error in package.lua at line 80: module 'strict' not found. 1,279 m (4,196 ft) - 100.58 m (330.0 ft) underground shaft,
weapons development
2.5 kt Venting detected on site, 25 kCi (920 TBq) [1][5][6][7][8]
Piton - 1 28 May 1970 12:00:00.164 PST (-8 hrs)
NTS Area U9itsy30 Lua error in package.lua at line 80: module 'strict' not found. 1,274 m (4,180 ft) - 236.22 m (775.0 ft) underground shaft,
weapons development
800 t Venting detected on site, more than 10 Ci (370 GBq) [1][3][5][6][7][8] Simultaneous, separate holes.
Piton - 2 28 May 1970 12:00:00.164 PST (-8 hrs)
NTS Area U9itsx27 Lua error in package.lua at line 80: module 'strict' not found. 1,270 m (4,170 ft) + underground shaft,
weapons development
less than 20 kt Venting detected on site [1][5][6][7] Simultaneous, separate holes.
Arnica-Violet - 2 26 June 1970 13:00:00.04 PST (-8 hrs)
NTS Area U2dd3 Lua error in package.lua at line 80: module 'strict' not found. 1,272 m (4,173 ft) - 264 m (866 ft) underground shaft,
weapons development
2 kt Venting detected, 73 Ci (2,700 GBq) [1][5][6][7][8][10] Simultaneous, separate holes.
Arnica-Yellow - 1 26 June 1970 13:00:00.04 PST (-8 hrs)
NTS Area U2dd2 Lua error in package.lua at line 80: module 'strict' not found. 1,270 m (4,170 ft) - 309.37 m (1,015.0 ft) underground shaft,
weapons development
3.5 kt [1][4][5][6][7] Simultaneous, separate holes.
  1. 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". Lua error in package.lua at line 80: module 'strict' not found.
  2. The 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.
  3. To 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. All historical timezone data are derived from here:
  4. 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.
  5. 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, 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.
  6. Atmospheric, 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.
  7. Include weapons development, weapon effects, safety test, transport safety test, war, science, joint verification and industrial/peaceful, which may be further broken down.
  8. 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.
  9. Estimated energy yield in tons, kilotons, and megatons. A ton of TNT equivalent is defined as 4.184 gigajoules (1 gigacalorie).
  10. 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.

References

  1. 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 1.12 1.13 1.14 1.15 1.16 1.17 1.18 1.19 1.20 1.21 1.22 1.23 1.24 1.25 1.26 1.27 1.28 1.29 1.30 1.31 1.32 1.33 1.34 1.35 1.36 1.37 1.38 1.39 1.40 1.41 1.42 1.43 1.44 1.45 1.46 1.47 1.48 1.49 1.50 1.51 1.52 1.53 1.54 1.55 1.56 1.57 1.58 1.59 1.60 1.61 1.62 1.63 1.64 1.65 1.66 1.67 1.68 1.69 1.70 1.71 1.72 1.73 1.74 1.75 1.76 1.77 1.78 Lua error in package.lua at line 80: module 'strict' not found.
  2. Lua error in package.lua at line 80: module 'strict' not found.
  3. 3.00 3.01 3.02 3.03 3.04 3.05 3.06 3.07 3.08 3.09 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 Lua error in package.lua at line 80: module 'strict' not found.
  4. 4.00 4.01 4.02 4.03 4.04 4.05 4.06 4.07 4.08 4.09 4.10 4.11 4.12 4.13 4.14 4.15 4.16 4.17 4.18 4.19 4.20 4.21 4.22 4.23 4.24 4.25 4.26 4.27 Lua error in package.lua at line 80: module 'strict' not found.
  5. 5.00 5.01 5.02 5.03 5.04 5.05 5.06 5.07 5.08 5.09 5.10 5.11 5.12 5.13 5.14 5.15 5.16 5.17 5.18 5.19 5.20 5.21 5.22 5.23 5.24 5.25 5.26 5.27 5.28 5.29 5.30 5.31 5.32 5.33 5.34 5.35 5.36 5.37 5.38 5.39 5.40 5.41 5.42 5.43 5.44 5.45 5.46 5.47 5.48 5.49 5.50 5.51 5.52 5.53 5.54 5.55 5.56 5.57 5.58 5.59 5.60 5.61 5.62 5.63 5.64 5.65 5.66 5.67 5.68 5.69 5.70 5.71 5.72 5.73 5.74 Lua error in package.lua at line 80: module 'strict' not found.
  6. 6.00 6.01 6.02 6.03 6.04 6.05 6.06 6.07 6.08 6.09 6.10 6.11 6.12 6.13 6.14 6.15 6.16 6.17 6.18 6.19 6.20 6.21 6.22 6.23 6.24 6.25 6.26 6.27 6.28 6.29 6.30 6.31 6.32 6.33 6.34 6.35 6.36 6.37 6.38 6.39 6.40 6.41 6.42 6.43 6.44 6.45 6.46 6.47 6.48 6.49 6.50 6.51 6.52 6.53 6.54 6.55 6.56 6.57 6.58 6.59 6.60 6.61 6.62 6.63 6.64 6.65 6.66 6.67 6.68 6.69 6.70 6.71 6.72 6.73 6.74 6.75 6.76 6.77 Lua error in package.lua at line 80: module 'strict' not found.
  7. 7.00 7.01 7.02 7.03 7.04 7.05 7.06 7.07 7.08 7.09 7.10 7.11 7.12 7.13 7.14 7.15 7.16 7.17 7.18 7.19 7.20 7.21 7.22 7.23 7.24 7.25 7.26 7.27 7.28 7.29 7.30 7.31 7.32 7.33 7.34 7.35 7.36 7.37 7.38 7.39 7.40 7.41 7.42 Lua error in package.lua at line 80: module 'strict' not found.
  8. 8.00 8.01 8.02 8.03 8.04 8.05 8.06 8.07 8.08 8.09 8.10 8.11 8.12 8.13 8.14 8.15 8.16 8.17 8.18 8.19 8.20 8.21 8.22 8.23 8.24 8.25 8.26 8.27 8.28 8.29 Lua error in package.lua at line 80: module 'strict' not found.
  9. 9.00 9.01 9.02 9.03 9.04 9.05 9.06 9.07 9.08 9.09 9.10 9.11 9.12 9.13 9.14 Lua error in package.lua at line 80: module 'strict' not found.
  10. 10.00 10.01 10.02 10.03 10.04 10.05 10.06 10.07 10.08 10.09 10.10 Lua error in package.lua at line 80: module 'strict' not found.