WW2 British bomb found in Koblenz causes 45000 people evacuation

[Bewolf]

Originally Posted by TomcatViP

Damn we can found oil mixed in sand at 1km beneath ground level. There isn't any good excuse not to find a metallic 250lb+ bomb (I am not talking abt hand grenades here )

A small team, a mini-drone, a truck and hundreds of km² can be done in a day.

Not if the ground is so cluttered with other kinds of metals that you have to stop every few meters to dig out a bike, a pot or all kinds of other stuff from 5 meters depths. It's not like those bombs are lying out in the open, usually they are only appearing when doing contruction work or in this case, when rivers are so low that their beds are readily accessible. They are also not in the vast wilderness of unihabitated lands but usually right in the middle of urban centers which you just cant shut down to get a search team do their work. The costs are simply not maintainable.