INDICATORS ON UNDERWATER NUCLEAR TEST 'UMBRELLA' (1958) YOU SHOULD KNOW

The 1946 Baker test, just after the chimney had damaged with the cloud, plus the crack had shaped within the water's surface area The Baker nuclear test at Bikini Atoll in July 1946 was a shallow underwater explosion, A part of Operation Crossroads. A twenty kiloton warhead was detonated in the lagoon which was around 200 ft (61 m) deep. The firs