The U.S. nuclear tests were conducted in series called operations. Each operation was given a name and it consisted of either a single test or a series of tests. During each series common objectives were pursued. The maximum number of U.S. nuclear tests held within single operation is 53.
The list of operations is presented in Table 21. The first column includes the name of an operation and its number. The second column contains dates for the first and the last nuclear tests, which were conducted during this operation. The third column contains information about the number of nuclear tests in an operation and their types. For the atmospheric testing period the information about personnel participating in operations and military exercises is given in the last column. For the underground testing period this column also summarizes the number of UK nuclear tests conducted at the NTS during different operations.
In all 1030 U.S. and 24 UK nuclear tests were carried out within 55 operations.
Name of Operation |
Date |
Type and Number of Nuclear Tests |
Comment |
| 1. Trinity |
07/16/45 |
Atmospheric -1 |
|
| 2. Crossroads |
07/01/46 - 07/25/46 |
Atmospheric -1 Underwater -1 |
Military exercise with 42,000 personnel |
| 3. Sandstone |
04/14/48-05/14/48 |
Atmospheric - 3 |
10,200 personnel participated |
| 4. Ranger |
01/27/51 - 02/06/51 |
Atmospheric - 5 |
|
| 5. Greenhouse |
04/07/51 - 05/24/51 |
Atmospheric - 4 |
9350 personnel participated |
| 6. Buster-Jangle |
10/22/51 -11/29/51 |
Atmospheric - 6 Underground -1 |
Desert Rock I, II, and III troop exercises were held during this operation. About 5500 personnel participated |
| 7. Tumbler-Snapper |
04/01/52 - 06/05/52 |
Atmospheric - 8 |
Desert Rock IV troop exercises were held during this operation. 10,600 personnel participated |
| 8. Ivy |
10/31/52-11/15/52 |
Atmospheric - 2 |
11,650 personnel participated |
| 9. Upshot-Knothole |
03/17/53-06/04/53 |
Atmospheric -11 |
Desert Rock V troop exercises were held during this operation. About 21,000 personnel participated |
| 10. Castle |
02/28/54-05/13/54 |
Atmospheric - 6 |
About 12,700 personnel participated |
| 11. Teapot |
02/18/55-05/15/55 |
Atmospheric -13 Underground -1 |
Desert Rock VI troop exercises were held during this operation. About 8000 personnel participated in the exercises and 4000 in the operation |
| 12. Wigwam |
05/14/55 |
Underwater -1 |
6800 personnel participated |
| 13. Project 56 |
11/01/55-01/18/56 |
Atmospheric - 4 |
|
| 14. Redwing |
05/04/56 -07/21/56 |
Atmospheric -17 |
14,600 personnel participated |
| 15. Project 57 |
04/24/57 |
Atmospheric -1 |
|
| 16. Plumbbob |
05/28/57-10/07/57 |
Atmospheric - 25 Underground - 4 |
Desert Rock VII and VIII troop exercises were held during this operation. About 16,000 personnel participated |
| 17. Project 58 |
12/06/57-12/09/57 |
Atmospheric -1 Underground -1 |
|
| 18. Project 58A |
02/22/58 - 03/14/58 |
Underground - 2 |
|
| 19. Hardtack I |
04/28/58-08/18/58 |
Atmospheric - 33 Underwater - 2 |
About 18,000 personnel participated |
| 20. Argus |
08/27/58 - 09/06/58 |
Atmospheric - 3 |
About 4500 personnel participated |
| 21. Hardtack II |
09/12/58-10/30/58 |
Atmospheric - 24 Underground-13 |
7650 personnel participated |
| 22. Nougat |
09/15/61 -06/30/62 |
Underground - 45 |
|
| 23. Dominic-Fishbowl |
04/25/62-11/04/62 |
Atmospheric - 35 Underwater -1 |
About 25,300 personnel participated |
| 24. Sunbeam |
07/07/62-07/17/62 |
Atmospheric - 3 Underground -1 |
About 3000 personnel participated |
| 25. Storax |
07/06/62 - 06/25/63 |
Underground - 48 |
Two UK nuclear tests |
| 26. Roller Coaster |
05/15/63-06/09/63 |
Atmospheric - 4 |
|
| 27. Niblick |
08/12/63-06/30/64 |
Underground - 41 |
|
| 28. Whetstone |
07/16/64-06/17/65 |
Underground - 48 |
Two UK nuclear tests |
| 29. Flintlock |
07/16/65-06/30/66 |
Underground - 48 |
One UK nuclear test |
| 30. Latchkey |
07/28/66 - 06/29/67 |
Underground - 38 |
|
| 31. Crosstie |
07/14/67-06/28/68 |
Underground - 48 |
|
| 32. Bowline |
07/17/68-06/26/69 |
Underground - 48 |
|
| 33. Mandrel |
07/16/69-06/26/70 |
Underground - 53 |
|
| 34. Emery |
10/13/70-06/29/71 |
Underground -16 |
|
| 35. Grommet |
07/01/71 - 06/28/72 |
Underground - 34 |
|
| 36. Toggle |
07/20/72 - 06/28/73 |
Underground - 28 |
|
| 37. Arbor |
10/02/73-06/19/74 |
Underground-19 |
One UK nuclear test |
| 38. Bedrock |
07/10/74-06/26/75 |
Underground - 27 |
|
| 39. Anvil |
09/06/75 - 08/26/76 |
Underground - 21 |
One UK nuclear test |
| 40. Fulcrum |
10/06/76-09/27/77 |
Underground - 21 |
|
| 41. Cresset |
10/26/77-09/27/78 |
Underground - 23 |
One UK nuclear test |
| 42. Quicksilver |
11/02/78-09/26/79 |
Underground -18 |
Two UK nuclear tests |
| 43. Tinderbox |
11/29/79-09/25/80 |
Underground -15 |
One UK nuclear test |
| 44. Guardian |
10/24/80-09/24/81 |
Underground -16 |
Two UK nuclear tests |
| 45. Praetorian |
10/01/81 -09/29/82 |
Underground - 22 |
Two UK nuclear tests |
| 46. Phalanx |
11/12/82-09/29/83 |
Underground -19 |
One UK nuclear test |
| 47. Fusileer |
12/09/83-09/13/84 |
Underground -17 |
One UK nuclear test |
| 48. Grenadier |
10/02/84-09/27/85 |
Underground -17 |
One UK nuclear test |
| 49. Charioteer |
10/09/85-09/30/86 |
Underground -18 |
Two UK nuclear tests |
| 50.Musketeer |
10/16/86-09/24/87 |
Underground -15 |
One UK nuclear test |
| 51. Touchstone |
10/23/87-08/30/88 |
Underground -14 |
|
| 52. Cornerstone |
10/13/88-09/14/89 |
Underground -12 |
|
| 53. Aqueduct |
10/31/89-09/27/90 |
Underground -11 |
One UK nuclear test |
| 54. Sculpin |
10/12/90-09/19/91 |
Underground - 8 |
One UK nuclear test |
| 55. Julin |
10/18/91 -09/23/92 |
Underground - 8 |
One UK nuclear test |