>>508302412This is retarded. Fission explosions work differently from detonations (combustion reaction that propagates through a medium faster than the speed of sound) but the result is the same, obscene energy released in a very short amount of time, the definition of explosion.
This "rehearsal" was to spread radiation around so the sensors monitoring the fallout could the tested and calibrated.
>>508303410Concrete structures will fair a lot better than structures made from wood and paper. Charred if it had a direct line of sight to the exact point the bomb exploded at, but standing if it was far enough away.