_ Announced United States NuclearTests -- By Event. Event Name#0) oss: Date (GCT)..| -. Location: |. Type. Purpose © Yield. Range: a Cerise Accidental release of radioactivity detected on site only 11/18/66 NTS Shaft WeaponsRelated Less than 20 kt Cernada 09/24/81 NTS Shaft WeaponsRelated Less than 20 kt Cerro 09/02/82 NTS Shaft Weapons Related Less than 20 kt Chaenactis 12/14/71 NTS Shaft WeaponsRelated 20 to 200 kt Chama Operation Dominic 10/18/62 Johnston Island area Airdrop WeaponsRelated Low Megaton Chamita 08/17/85 NTS Shaft Weapons Related Less than 20 kt Chancellor 09/01/83 NTS Shaft Weapons Related 20 to 150 kt Charcoal 09/10/65 NTS Shaft Joint US-UK 20 to 200 kt Charleston 09/28/57 NTS Balloon WeaponsRelated 12 kt Charlie 10/30/51 NTS Airdrop WeaponsRelated 14 kt Charlie 04/22/52 NTS Airdrop WeaponsRelated 31 kt Chartreuse 05/06/66 NTS Shaft WeaponsRelated 73 kt Chateaugay 06/28/68 NTS Shaft WeaponsRelated 20 to 200 kt Chavez 10/27/58 NTS Tower Safety Experiment 0.6 tons Checkmate 10/20/62 Johnston Island Rocket WeaponsEffects Low Cheedam 02/17/83 NTS Shaft WeaponsRelated Less than 20 kt Chena 10/10/61 NTS Tunnel WeaponsRelated Low 05/20/56 Bikini Airdrop Weapons Related Several MT 02/14/76 NTS Shaft WeaponsRelated 200 to 500 kt DoD Event--Operation Fishbowl High altitude--tens of kilometers Accidental release of radioactivity area detected on site only Cherokee First airdrop by U.S. of a thermonuclear weapon Cheshire -64-