really? how was Hiroshima occupied so quickly after the bomb?
Low yield bomb? I’m hedging bets as a couple items at the sites will likely be ticklish when handled. Hopefully technologies and safety equipment will advance to accelerate cleanup. And costs don’t go thru the roof.
There was a *lot* less nuclear material involved at Hiroshima. Little Boy had 64 kg (141 lb) of enriched uranium, per Wikipedia. Each of the Fukushima reactors (6) probably each have something on the order of 100 tons of uranium each.