mar 1, 1954 - 1954
March 1 - The first deliverable hydrogen bomb design is tested at Bikini Atoll. "BRAVO" has a yield of 14.8 megatons. Radioactive fallout affects local islanders and a nearby fishing boat.
April 12 to May 6 - Hearings regarding Oppenheimer's loyalty cause him to lose his security clearance.
September 30 - The USS Nautilus, the first American nuclear powered submarine, is launched
Added to timeline:
atomic and nuclear physics