-.. Announced United States Nuclear Tests -- By DatéEvent Name Date (GCT) Location Type Purpose Yield Range Operation Hardtack I! -- Continued Catron 10/24/58 NTS Tower Safety Experiment 21 tons Juno Fired in surface structure Radioactivity not detected off site 10/24/58 NTS Surface Safety Experiment 1.7 tons Ceres Radioactivity not detected off site 10/26/58 NTS Tower Safety Experiment 0.7 tons Sanford 10/26/58 NTS Balloon WeaponsRelated 4.9 kt De Baca 10/26/58 NTS Balloon WeaponsRelated 2.2 kt Chavez 10/27/58 NTS Tower Safety Experiment 0.6 tons Evans 10/29/58 NTS Tunnel WeaponsRelated 55 tons Humboldt 10/29/58 NTS Tower Weapons Related 7.8 tons Mazama 10/29/58 NTS Tower WeaponsRelated Zero Santa Fe 10/30/58 NTS Balloon Weapons Related 1.3 kt Blanca ’ Slight venting 10/30/58 NTS Tunnel WeaponsRelated 22 kt Ganymede 10/30/58 NTS Surface Safety Experiment Zero 10/30/58 NTS Tower _Safety Experiment Venting Radioactivity not detected off site No radioactive release detected Contained in surface structure No radioactive release detected Titania -12- 0.2 tons