Announced United States Nuclear Tests -- ByDate | Event Name. Date (GCT) | .. | Location. ....].... Operation Whetstone -- Continued .Purpose "s a Parrot Accidental release of radioactivity detected off site 12/16/64 NTS Shaft Weapons Related 1.3 kt Mudpack DoD Event 12/16/64 NTS Shaft WeaponsEffects 2.7 kt Sulky 12/18/64 NTS Shaft Plowshare Wool 01/14/65 NTS Shaft Weapons Related Less than 20 kt Cashmere 02/04/65 NTS Shaft WeaponsRelated . Less than 20 kt Alpaca 02/12/65 NTS Shaft WeaponsRelated Less than 20 kt Merlin 02/16/65 NTS Shaft WeaponsRelated 10.1 ke Wishbone 02/18/65 NTS Shaft WeaponsEffects Less than 20 kt Wagtail 03/03/65 NTS Shaft WeaponsRelated 20 to 200 kt Cup 03/26/65 NTS Shaft Weapons Related 20 to 200 kt Kestrel 04/05/65 NTS Shaft WeaponsRelated Less than 20 kt Palanquin Release of radioactivity detected off site 04/14/65 NTS Crater Piowshare 4.3 kt Excavation test of explosive buried at | 0.092 kt greater depth in relation to yield Produced mound of broken rock Release of radioactivity detected off site Accidental release of radioactivity detected off site Accidenta! release of radioactivity detected on site only DoD Event Accidental release of radioactivity detected on site only