CONSIDERATIONS TO KNOW ABOUT UNDERWATER NUCLEAR TEST 'UMBRELLA' (1958)

With test moratoriums around the horizon, American weapons labs rushed out lots of new styles. A hard deadline for testing was set at midnight (0000 hrs), 31 October 1958, as negotiations have been established to start out that working day, as well as schedule shows it, with 29 tests executed in October, 4 of these on the final working day. A perso