THE ULTIMATE GUIDE TO UNDERWATER NUCLEAR TEST 'UMBRELLA'

With test moratoriums around the horizon, American weapons labs rushed out a lot of new patterns. A hard deadline for testing was established at midnight (0000 hrs), 31 October 1958, as negotiations have been set to start that day, as well as program reveals it, with 29 tests executed in October, 4 of them on the final day. One particular other tes