5 seconds
The US were working on the bomb since 1941 up to 1945 when the first bomb tested.
A long time
5 seconds
Depending on the size and type of the bomb and also on the enrichment installation available.
atomic bomb that's what
Yes......As Long As It Isnt A Bomb....:L
decades
It takes less than a minute.
See: Atomic bombings of Hiroshima and Nagasaki
See: Atomic bombings of Hiroshima and Nagasaki
over 12 miles