Announced United States Nuclear Tests -- By Date Event Name Date (GCT) Location Type. |. Purpose,- Yieid Range Operation Mandrel -- Continued Rulison Joint Government/industry gas 09/10/69 Grand Valley Shaft Plowshare 40 kt 09/12/69 NTS Shaft WeaponsEffects Less than 20 kt Jorum 09/16/69 NTS Shaft WeaponsRelated Less than 1 MT Milrow Seismic calibration 10/02/69 Amchitka Shaft WeaponsRelated About 1 MT Pipkin 10/08/69 NTS Shaft WeaponsRelated 200 to 1000 kt Cruet 10/29/69 NTS Shaft WeaponsRelated 11 kt Pod Accidental release of radioactivity 10/29/69 NTS Shaft WeaponsRelated 20 to 200 kt Calabash 10/29/69 NTS Shaft WeaponsRelated 110 kt Scuttle 11/13/69 NTS Shaft WeaponsRelated Less than 20 kt Piccaiilli 11/21/69 NTS Shaft WeaponsRelated 20 to 200 kt Diesel Train DoD Event 12/05/69 NTS Tunnel WeaponsEffects Less than 20 kt Grape A 12/17/69 NTS Shaft WeaponsRelated 20 to 200 kt Lovage 12/17/69 NTS Shaft Weapons Related Less than 20 kt Terrine 12/18/69 NTS Shaft WeaponsRelated 20 to 200 kt Fob 01/23/70 NTS Shaft WeaponsRelated Less than 20 kt stimulation experiment Operational release of radioactivity detected off site Minute Steak DoD Event Accidental release of radioactivity detected on site only detected off site Accidental release of radioactivity detected off site by aircraft only -37mematinmalnantinNeath nee