Question:
the places were Unites states used the Nuke , or is it stil filled with Radiation ?
Answer:
Atomic bombs use significantly small amount of uranium or plutonium compared to nuclear plants.
In fact the bomb exploded above Hiroshima city only used up less 1kg out of 50 kg of the total uranium 235 mass in the bomb.
When the two atomic bombs exploded above the both cities, radioactive materials dispersed quickly.
Contamination level in the atmosphere could never reach as high as the nuclear plant explosion because wind plays a big roll in dispersing them quickly.
But the radiation released by the atomic bombs were so powerful that people living there in the vicinity of the ground zero, most of them were elderly, women and children because men were at war zones, were instantly killed.
Bottom line, Hiroshima and Nagasaki are not filled with radiation, maybe less than your hometown because somehow Japan is a country where natural radiation level is relatively low compared to other nations; America and China have relatively high levels probably because many nuclear weapons had been tested.
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