Announced United States Nuclear Tests -- By Event». Event Name ~ . a Date (GCT) |. * Location =. |... Type oA yield Range.” Beth Purpose::::. op wa Clymer 03/12/66 NTS Shaft Weapons Related Less than 20 kt Coalora 02/11/83 NTS Shaft WeaponsRelated Less than 20 kt Cobbler 11/08/67 NTS Shaft WeaponsRelated Less than 20 kt Codsaw 02/19/62 NTS Shaft WeaponsRelated Low Coffer 03/21/69 NTS Shaft WeaponsRelated Less than 100 kt Colby 03/14/76 NTS Shaft WeaponsRelated 500 to 1000 kt Colfax 10/05/58 NTS Shaft Safety Experiment 5.5 tons Colwick 04/26/80 NTS Shaft Joint US-UK 20 to 150 kt Commodore 05/20/67 NTS Shaft WeaponsRelated 250 kt Comstock 06/02/88 NTS Shaft WeaponsRelated Less than 150 kt Contact 06/22/89 NTS Shaft WeaponsRelated 20 to 150 kt Corduroy 12/03/65 NTS Shaft WeaponsRelated 20 to 200 kt Cormorant Accidental release of radioactivity detected on site 07/17/64 NTS Shaft Joint US-UK Less than 20 kt Cornice 05/15/70 NTS Shaft WeaponsRelated 20 to 200 kt Cornucopia 07/24/86 NTS Shaft WeaponsRefated Less than 20 kt Correo 08/02/84 NTS Shaft WeaponsRelated Less than 20 kt Coso 03/08/91 NTS Shaft WeaponsRelated Less than 20 kt Cottage 03/23/85 NTS Shaft WeaponsRelated 20 to 150 kt Coulomb-A Radioactivity not detected off site 07/01/57 NTS Surface Safety Experiment Zero Coulomb-B 09/08/57 NTS Surface Safety Experiment 0.3 kt Accidental release of radioactivity detected on site only Unstemmed hole Radioactivity not detected off site -66-