TOP UNDERWATER NUCLEAR TEST 'UMBRELLA' SECRETS

With test moratoriums on the horizon, American weapons labs rushed out lots of new models. A tough deadline for testing was set at midnight (0000 hrs), 31 Oct 1958, as negotiations had been established to start that working day, plus the timetable exhibits it, with 29 tests executed in Oct, 4 of them on the final day. Just one other test was cancel