Announced United States Nuclear Tests -- By Date “>. o> Event Name. Seog ot. Date (GCT)... ‘Location. Type... Operation Toggle Diamond Sculls DoD Event 07/20/72 NTS Tunnel WeaponsEffects Less than 20 kt Oscuro 09/21/72 NTS Shaft WeaponsRelated 20 to 200 kt Delphinium 09/26/72 NTS Shaft WeaponsRelated 15 kt Flax 12/21/72 NTS Shaft WeaponsRelated 20 to 200 kt Miera 03/08/73 NTS Shaft WeaponsRelated 20 to 200 kt Angus 04/25/73 NTS Shaft Weapons Related 20 to 200 kt Starwort 04/26/73 NTS Shaft WeaponsRelated 90 kt Rio Blanco Joint Government/industry gas 05/17/73 Rifle Shaft Plowshare Three 33 kt Dido Queen DoD Event 06/05/73 NTS Tunnel WeaponsEffects Less than 20 kt Almendro 06/06/73 NTS Shaft Weapons Related 200 to 1000 kt Portulaca 06/28/73 NTS Shaft WeaponsRelated 20 to 200 kt stimulation experiment Operation Arbor . Husky Ace DoD Event 10/12/73 NTS Tunnel WeaponsEffects Less than 20 kt Bernal 11/28/73 NTS Shaft Weapons Related Less than 20 kt Latir 02/27/74 NTS Shaft Weapons Related 20 to 200 kt Fallon 05/23/74 NTS Shaft Joint US-UK 20 to 200 kt Ming Blade DoD Event 06/19/74 NTS Tunnel Weapons Effects Less than 20 kt -4]-