TOP UNDERWATER NUCLEAR TEST 'UMBRELLA' SECRETS

With test moratoriums over the horizon, American weapons labs rushed out a lot of new designs. A hard deadline for testing was set at midnight (0000 hrs), 31 October 1958, as negotiations have been set to begin that day, plus the program reveals it, with 29 tests executed in Oct, 4 of these on the last day. A single other test was cancelled mainly