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
|
417 - 1
| 20 February 1975 05:33:00.0
| ALMT (6 hrs)
| Degelen, Semipalatinsk, Kazakhstan: 163 49.77837°N 78.00296°E / 49.77837; 78.00296 (417 - 1)
| 749 m (2,457 ft) +
| tunnel, weapon effect
|
| unknown yield
|
| [1][3][4][5][6]
|
|
417 - 2
| 20 February 1975 05:33:00.0
| ALMT (6 hrs)
| Degelen, Semipalatinsk, Kazakhstan: 163 49.77837°N 78.00296°E / 49.77837; 78.00296 (417 - 2)
| 749 m (2,457 ft) +
| tunnel, weapon effect
|
| unknown yield
|
| [1][3][4][5][6]
|
|
417 - 3
| 20 February 1975 05:33:00.0
| ALMT (6 hrs)
| Degelen, Semipalatinsk, Kazakhstan: 163 49.77837°N 78.00296°E / 49.77837; 78.00296 (417 - 3)
| 749 m (2,457 ft) +
| tunnel, weapon effect
|
| unknown yield
|
| [1][3][4][5][6]
|
|
418
| 20 February 1975 05:33:??
| ALMT (6 hrs)
| Degelen, Semipalatinsk, Kazakhstan: 156 49.79516°N 78.0084°E / 49.79516; 78.0084 (418)
| 665 m (2,182 ft) +
| tunnel, weapon effect
|
| 55 kt
|
| [1][4][5][6][7]
|
|
419
| 11 March 1975 05:43:00.1
| ALMT (6 hrs)
| Degelen, Semipalatinsk, Kazakhstan: 101 49.7462°N 78.106°E / 49.7462; 78.106 (419)
| 650 m (2,130 ft) +
| tunnel, weapons development
|
| 24 kt
|
| [1][4][5][6][7]
|
|
420 Galit A2.1 (Halite)
| 25 April 1975 05:00:00.0
| SHET (5 hrs)
| Atyrau, Kazakhstan: A-II-2 47.909°N 47.912°E / 47.909; 47.912 (420 Galit A2.1 (Halite))
| – 600 m (2,000 ft)
| underground shaft, industrial
|
| 350 t
|
| [1][3][5][6][7]
| A-II, in cavity produced by #280.
|
421
| 27 April 1975 05:36:59.78
| ALMT (6 hrs)
| Balapan, Semipalatinsk, Kazakhstan: 1205 49.94006°N 78.90611°E / 49.94006; 78.90611 (421)
| 330 m (1,080 ft) +
| underground shaft, weapons development
|
| 29 kt
|
| [1][4][5][6][7]
|
|
422
| 8 June 1975 03:27:00.0
| ALMT (6 hrs)
| Degelen, Semipalatinsk, Kazakhstan: 165 49.7606°N 78.0125°E / 49.7606; 78.0125 (422)
| 722 m (2,369 ft) +
| tunnel, peaceful research
|
| 32 kt
|
| [1][4][5][6][7]
|
|
423
| 30 June 1975 03:27:00.25
| ALMT (6 hrs)
| Balapan, Semipalatinsk, Kazakhstan: A 49.9862°N 78.89576°E / 49.9862; 78.89576 (423)
| 330 m (1,080 ft) +
| underground shaft, weapons development
|
| 8 kt
|
| [1][4][5][6][7]
|
|
424 - 1
| 15 July 1975 02:57:00.0
| ALMT (6 hrs)
| Degelen, Semipalatinsk, Kazakhstan: 133 49.79556°N 78.09568°E / 49.79556; 78.09568 (424 - 1)
| 686 m (2,251 ft) +
| tunnel, weapons development
|
| unknown yield
|
| [1][3][4][5][6]
|
|
424 - 2
| 15 July 1975 02:57:00.0
| ALMT (6 hrs)
| Degelen, Semipalatinsk, Kazakhstan: 133 49.79556°N 78.09568°E / 49.79556; 78.09568 (424 - 2)
| 686 m (2,251 ft) +
| tunnel, weapons development
|
| unknown yield
|
| [1][3][4][5][6]
|
|
425 - 1
| 7 August 1975 03:57:00.1
| ALMT (6 hrs)
| Degelen, Semipalatinsk, Kazakhstan: 122 49.8038°N 78.1234°E / 49.8038; 78.1234 (425 - 1)
| 711 m (2,333 ft) +
| tunnel, weapons development
|
| 14 kt
|
| [1][4][5][6][7]
|
|
425 - 2
| 7 August 1975 03:57:00
| ALMT (6 hrs)
| Degelen, Semipalatinsk, Kazakhstan: 123 49.80319°N 78.12254°E / 49.80319; 78.12254 (425 - 2)
| 752 m (2,467 ft) +
| tunnel, weapons development
|
| unknown yield
|
| [1][3][4][5][6]
|
|
426 Gorizont 4 (Horizon)
| 12 August 1975 15:00:00.6
| YAKT (9 hrs)
| Sakha, Russia: G-4 70.76367°N 126.95232°E / 70.76367; 126.95232 (426 Gorizont 4 (Horizon))
| – 500 m (1,600 ft)
| underground shaft, seismic sounding
|
| 7.6 kt
|
| [1][3][5][6][8]
| Seismic probing program. 120 km SW Tiksi.
|
427 - 1
| 23 August 1975 08:59:58.25
| MSK (3 hrs)
| NZ Area B, Matochkin Shar, Novaya Zemlya, Russia: A-10 73.334°N 54.682°E / 73.334; 54.682 (427 - 1)
| 100 m (330 ft) – 700 m (2,300 ft)
| tunnel, weapon effect
|
| 1.1 Mt
| Venting detected on site
| [1][3][5][6][7]
|
|
427 - 2
| 23 August 1975 08:59:58.3
| MSK (3 hrs)
| NZ Area B, Matochkin Shar, Novaya Zemlya, Russia: A-10 73.334°N 54.682°E / 73.334; 54.682 (427 - 2)
| 100 m (330 ft) +
| tunnel, weapon effect
|
| unknown yield
|
| [1][3][5][6][8]
|
|
427 - 3
| 23 August 1975 08:59:58.3
| MSK (3 hrs)
| NZ Area B, Matochkin Shar, Novaya Zemlya, Russia: A-10 73.334°N 54.682°E / 73.334; 54.682 (427 - 3)
| 100 m (330 ft) +
| tunnel, weapon effect
|
| unknown yield
|
| [1][3][5][6][8]
|
|
427 - 4
| 23 August 1975 08:59:58.3
| MSK (3 hrs)
| NZ Area B, Matochkin Shar, Novaya Zemlya, Russia: A-10 73.334°N 54.682°E / 73.334; 54.682 (427 - 4)
| 100 m (330 ft) +
| tunnel, weapon effect
|
| unknown yield
|
| [1][3][5][6][8]
|
|
427 - 5
| 23 August 1975 08:59:58.3
| MSK (3 hrs)
| NZ Area B, Matochkin Shar, Novaya Zemlya, Russia: A-10 73.334°N 54.682°E / 73.334; 54.682 (427 - 5)
| 100 m (330 ft) +
| tunnel, weapons development
|
| unknown yield
|
| [1][3][5][6][8]
|
|
427 - 6
| 23 August 1975 08:59:58.3
| MSK (3 hrs)
| NZ Area B, Matochkin Shar, Novaya Zemlya, Russia: A-10 73.334°N 54.682°E / 73.334; 54.682 (427 - 6)
| 100 m (330 ft) +
| tunnel, weapons development
|
| unknown yield
|
| [1][3][5][6][8]
|
|
427 - 7
| 23 August 1975 08:59:58.3
| MSK (3 hrs)
| NZ Area B, Matochkin Shar, Novaya Zemlya, Russia: A-10 73.334°N 54.682°E / 73.334; 54.682 (427 - 7)
| 100 m (330 ft) +
| tunnel, weapons development
|
| unknown yield
|
| [1][3][5][6][8]
|
|
427 - 8
| 23 August 1975 08:59:58.3
| MSK (3 hrs)
| NZ Area B, Matochkin Shar, Novaya Zemlya, Russia: A-10 73.334°N 54.682°E / 73.334; 54.682 (427 - 8)
| 100 m (330 ft) +
| tunnel, weapons development
|
| unknown yield
|
| [1][3][5][6][8]
|
|
428 Gorizont 3 (Horizon)
| 29 September 1975 11:00:00.4
| KRAT (7 hrs)
| Krasnoyarsk, Russia: G-3 69.578°N 90.337°E / 69.578; 90.337 (428 Gorizont 3 (Horizon))
| – 830 m (2,720 ft)
| underground shaft, seismic sounding
|
| 7.6 kt
|
| [1][3][5][6][7]
| Seismic probing program. 80 km E Norilsk.
|
429
| 5 October 1975 04:27:00.0
| ALMT (6 hrs)
| Degelen, Semipalatinsk, Kazakhstan: 192 49.78143°N 78.09052°E / 49.78143; 78.09052 (429)
| 635 m (2,083 ft) +
| tunnel, weapons development
|
| 200 t
|
| [1][4][5][6][7]
|
|
431
| 18 October 1975 08:59:59.4
| MSK (3 hrs)
| NZ Area A, Chyornaya Guba, Novaya Zemlya, Russia: Yu-7 70.795°N 53.712°E / 70.795; 53.712 (431)
| 30 m (98 ft) +
| underground shaft, weapons development
|
| 600 kt
|
| [1][5][6][7][9]
|
|
430 - 1
| 18 October 1975 09:00:??
| MSK (3 hrs)
| NZ Area A, Chyornaya Guba, Novaya Zemlya, Russia: Yu-6N 70.99°N 53.7°E / 70.99; 53.7 (430 - 1)
| 30 m (98 ft) – 1,100 m (3,600 ft)
| underground shaft, weapons development
|
| 600 kt
| Venting detected
| [1][3][5][6][7]
|
|
430 - 2
| 18 October 1975 09:00:??
| MSK (3 hrs)
| NZ Area A, Chyornaya Guba, Novaya Zemlya, Russia: Yu-6N 70.99°N 53.7°E / 70.99; 53.7 (430 - 2)
| 30 m (98 ft) +
| underground shaft, weapons development
|
| 600 kt
|
| [1][3][5][6][7]
|
|
432 - 1
| 21 October 1975 11:59:58.03
| MSK (3 hrs)
| NZ Area B, Matochkin Shar, Novaya Zemlya, Russia: A-12 73.31907°N 54.9269°E / 73.31907; 54.9269 (432 - 1)
| 100 m (330 ft) – 700 m (2,300 ft)
| tunnel, weapons development
|
| 1.3 Mt
| Venting detected off site, 300 kCi (11,000 TBq)
| [1][5][6][7][9]
|
|
432 - 2
| 21 October 1975 11:59:58.0
| MSK (3 hrs)
| NZ Area B, Matochkin Shar, Novaya Zemlya, Russia: A-12 73.3158°N 54.93087°E / 73.3158; 54.93087 (432 - 2)
| 100 m (330 ft) +
| tunnel, weapons development
|
| unknown yield
|
| [1][3][5][6][8]
|
|
432 - 3
| 21 October 1975 11:59:58.0
| MSK (3 hrs)
| NZ Area B, Matochkin Shar, Novaya Zemlya, Russia: A-12 73.31435°N 54.93673°E / 73.31435; 54.93673 (432 - 3)
| 100 m (330 ft) +
| tunnel, weapons development
|
| unknown yield
|
| [1][3][5][6][8]
|
|
432 - 4
| 21 October 1975 11:59:58.0
| MSK (3 hrs)
| NZ Area B, Matochkin Shar, Novaya Zemlya, Russia: A-12 73.31435°N 54.93673°E / 73.31435; 54.93673 (432 - 4)
| 100 m (330 ft) +
| tunnel, weapons development
|
| unknown yield
|
| [1][3][5][6][8]
|
|
432 - 5
| 21 October 1975 11:59:58.0
| MSK (3 hrs)
| NZ Area B, Matochkin Shar, Novaya Zemlya, Russia: A-12 73.31435°N 54.93673°E / 73.31435; 54.93673 (432 - 5)
| 100 m (330 ft) +
| tunnel, weapons development
|
| unknown yield
|
| [1][3][5][6][8]
|
|
433
| 29 October 1975 04:46:59.89
| ALMT (6 hrs)
| Balapan, Semipalatinsk, Kazakhstan: 1206 49.95389°N 78.87389°E / 49.95389; 78.87389 (433)
| 330 m (1,080 ft) +
| underground shaft, weapons development
|
| 36 kt
|
| [1][4][5][6][7]
|
|
434
| 13 December 1975 04:56:59.99
| ALMT (6 hrs)
| Degelen, Semipalatinsk, Kazakhstan: 604 49.8076°N 78.1144°E / 49.8076; 78.1144 (434)
| 770 m (2,530 ft) +
| tunnel, weapons development
|
| 8 kt
|
| [1][4][5][6][7]
|
|
435
| 25 December 1975 05:16:59.67
| ALMT (6 hrs)
| Balapan, Semipalatinsk, Kazakhstan: 1067 50.04884°N 78.81882°E / 50.04884; 78.81882 (435)
| 330 m (1,080 ft) +
| underground shaft, weapons development
|
| 59 kt
|
| [1][4][5][6][7]
|
|