Comment Re:Newsworthy? (Score 1) 55
No there wasnt a serious effort to survey every square mile of a bombed city in order to uncover unexploded ordnance, because it would have been a huge huge task at a time when the resource available was focused on feeding the bombed out city dwellers.
They didnt have the tech that we have today, so there are many situations where a bomb didn't go off and buried itself several metres underground with minimal impact damage, or fell inside the crater of another bomb which did explode earlier and thus hide all evidence of there being a second bomb. Millions of bombs were dropped, and cities were bombed again and again.
These things arent sitting on the surface being blatantly obvious, they would have been buried by their own momentum. You would need extremely accurate magnetometers, or ground penetrating radar