TOP GUIDELINES OF UNDERWATER NUCLEAR TEST 'UMBRELLA' (1958)

With test moratoriums on the horizon, American weapons labs rushed out quite a few new designs. A hard deadline for testing was set at midnight (0000 hrs), 31 October 1958, as negotiations had been set to start that day, along with the plan demonstrates it, with 29 tests executed in Oct, four of them on the last working day. One other test was canc