Announced United States Nuclear Tests -- By Event _ Event Name. Date (GCT) Location. __Type _ Purpose Yield Range .. Keelson 02/04/76 NTS Shaft WeaponsRelated 20 to 200 kt Kennebec Accidental release of radioactivity detected on site only 06/25/63 NTS Shaft Weapons Related Low Kepler 07/24/57 NTS Tower Weapons Related 10 kt Kernville 02/15/88 NTS Shaft WeaponsRelated 20 to 150 kt Kesti 06/16/82 NTS Shaft WeaponsRelated Less than 20 kt Kestrel 04/05/65 NTS Shaft WeaponsRelated Less than 20 kt Kickapoo 06/13/56 Enewetak Tower WeaponsRelated King 11/15/52 Enewetak Airdrop WeaponsRelated 500 kt Kingfish 11/01/62 Johnston Istand Rocket WeaponsEffects Submegaton Kinibito 12/05/85 NTS Shaft Joint US-UK 20 to 150 kt Klickitat 02/20/64 NTS Shaft Piowshare 20 to 200 kt Kloster 02/15/79 NTS Shaft Weapons Related 20 to 150 kt Knickerbocker 05/26/67 NTS Shaft WeaponsRelated 76 kt Knife A 09/12/68 NTS Shaft WeaponsRelated Less than 20 kt Knife 8 11/15/68 NTS Shaft WeaponsRelated Less than 20 kt Knife C 10/03/68 NTS Shaft Weapons Related Less than 20 kt Knox 02/21/68 NTS Shaft WeaponsRelated 20 to 200 kt Koa 05/12/58 Enewetak Surface Weapons Related 1.37 MT Kohocton 08/23/63 NTS Shaft WeaponsRelated Low Koon 04/06/54 Bikini Surface WeaponsRelated 110 kt DoD Event--Operation Fishbowl High altitude--tens of kilometers Device development area -80-