The Definitive Guide to Underwater Nuclear Test 'Umbrella' (1958)
The 1946 Baker test, just after the chimney had damaged from the cloud, along with the crack had formed over the drinking water's surface The Baker nuclear test at Bikini Atoll in July 1946 was a shallow underwater explosion, part of Operation Crossroads. A twenty kiloton warhead was detonated inside a lagoon which was approximately two hundred ft