| mo . ; / sc. . Event Name | Announced United States Nuclear Tests -- By. Event. | Date (GCT) |... Location.....|.. Type .. Purpose... Yield Range. ma I IE Brazos Accidental release of radioactivity detected on site only 03/08/62 NTS Shaft Weapons Related 8.4 kt Breton 09/13/84 NTS Shaft WeaponsRelated 20 to 150 kt Brie 06/18/87 NTS Shaft WeaponsRelated Less than 20 kt Bristol 11/26/91 NTS Shaft Joint US-UK Less than 20 kt Bronze 07/23/65 NTS Shaft WeaponsRelated 20 to 200 kt Buff 12/16/65 NTS Shaft WeaponsRelated 20 to 200 kt Buggy Row charge experiment--five 03/12/68 NTS Crater Plowshare 5.4 kt Bulkhead 04/27/77 NTS Shaft WeaponsRelated 20 to 150 kt Bullfrog 08/30/88 NTS Shaft WeaponsRelated Less than 150 kt Bullion 06/13/90 NTS Shaft WeaponsRelated 20 to 150 kt Bumping Operation Dominic 10/06/62 Johnston {sland area Airdrop WeaponsRelated Low Burzet 08/03/79 NTS Shaft WeaponsRelated 20 to 150 kt Buteo 05/12/65 NTS Shaft WeaponsRelated Less than 20 kt Butternut 05/11/58 Enewetak Barge Weapons Related Bye 07/16/64 NTS Shaft WeaponsRelated 20 to 200 kt Caboc 12/16/81 NTS Shaft WeaponsRelated Less than 20 kt Cabra 03/26/83 NTS Shaft WeaponsRelated 20 to 150 kt Cabrillo 03/07/75 NTS Shaft WeaponsRelated 20 to 200 kt Cabriolet Release of radioactivity detected off site 01/26/68 NTS Crater Ptowshare 2.3 kt Cactus 05/05/58 Enewetak Surface WeaponsRelated 18 kt simultaneous detonations Release of radioactivity detected off site -62-