CONSIDERATIONS TO KNOW ABOUT UNDERWATER NUCLEAR TEST 'UMBRELLA' (1958)

With test moratoriums about the horizon, American weapons labs rushed out many new patterns. A tough deadline for testing was established at midnight (0000 hrs), 31 October 1958, as negotiations had been set to begin that day, as well as the routine exhibits it, with 29 tests executed in October, 4 of these on the final day. One particular other te