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

With test moratoriums to the horizon, American weapons labs rushed out numerous new types. A tough deadline for testing was established at midnight (0000 hrs), 31 Oct 1958, as negotiations were set to start that day, along with the agenda demonstrates it, with 29 tests executed in Oct, 4 of them on the last day. 1 other test was cancelled for the r