Riceball
Master Member
It's in the first line of the plot description on wikipedia. We need to find an official statement on the subject. Your logic makes sense. Still, a 302 wouldn't be out of place in 1954, definitely not enough to break immersion.
I'd think that the Bikini Atoll test pretty definitively tells us what year the movie is set in, unless the test actually took place in '51 but wasn't made public until '54.