After "The Little Boy" exploded people realized that people were having reactions and were dying because of radiation, but they didn't know that at the time.
The explosion was made by uranium.
Kingsland Explosion happened in 1917.
Mihăileşti explosion happened in 2004.
Oaks explosion happened in 1866.
Bidganeh explosion happened in 2011.
Clarkston explosion happened in 1971.
Vergarola explosion happened in 1946.
Delft Explosion happened in 1654.
Oppau explosion happened in 1921.
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no nothing
It was not the custom but it certainly happened a little.