- Announced United States Nuclear Tests -- By Date. Event Name... oe<: | Date (GCT)-|.- © Location... |. Types. |. Operation Bowline -- Continued — cena.)Yield Range. 0 Benham 12/19/68 NTS Shaft WeaponsRelated 1.15 MT Packard 01/15/69 NTS Shaft WeaponsEffects 10 kt Wineskin 01/15/69 NTS Shaft WeaponsRelated 20 to 200 kt Vise 01/30/69 NTS Shaft Weapons Related 20 to 200 kt Cypress 02/12/69 NTS Tunnel WeaponsEffects Less than 20 kt Barsac 03/20/69 NTS Shaft Weapons Related Less than 20 kt Coffer 03/21/69 NTS Shaft WeaponsRelated Less than 100 kt Thistle 04/30/69 NTS Shaft WeaponsRelated 20 to 200 kt Blanton 04/30/69 NTS Shaft WeaponsRelated 20 to 200 kt Purse 05/07/69 NTS Shaft WeaponsRelated 20 to 200 kt Torrido 05/27/69 NTS Shaft WeaponsRelated 20 to 200 kt Tapper Accidental! release of radioactivity detected onsite only 06/12/69 NTS Shaft Weapons Related Less than 20 kt Accidental release of radioactivity detected on site only Accidental release of radioactivity detected onsite only Accidental release of radioactivity detected on site only : ““Qperation Mandrel ee \Idrim 07/16/69 NTS Shaft WeaponsRelated 20 to 200 kt Hutch 07/16/69 NTS Shaft WeaponsRelated 20 to 200 kt Spider 08/14/69 NTS Shaft WeaponsRelated Less than 20 kt Pliers Accidental release of radioactivity 08/27/69 NTS Shaft WeaponsRelated Less than 20 kt detected on site only -36-