DETAILED NOTES ON UNDERWATER NUCLEAR TEST 'UMBRELLA' (1958)

The 1946 Baker test, just after the chimney had broken through the cloud, and also the crack had fashioned to 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 in the lagoon which was somewhere around 200 ft (sixt