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This “delayed fallout” could cause radioactive particles to fall all over the earth – which is why knowing where a fallout shelter is essential, even if you don’t live near a potential target. Wind and rain can cause fallout to spread far away from the blast site.
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You’d need to immediately get in a fallout shelter to avoid getting poisoned. The radioactive debris then falls back to the earth, contaminating everything it touches. The fireball would shoot miles into the atmosphere – pulling dirt and debris with it.
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If a nuclear bomb were to hit, the blast would create a massive fireball which would vaporize everything nearby.
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