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▲The art of defusing a second world war bomb (theguardian.com)
newprint 3 hours ago [-]
My aunt lives in Hamm, Germany. It used to be a massive rail road hub and allies bombed the f* out it. The old church sitting middle of the town still carries the scars of bombing. Few years ago, during the renovation of the shopping mall, construction crew found unexploded American 500 lbs bomb in the ground. City had to evacuate a lot of people. Throughout years, there were multiple other incidents with UXO in Hamm, that I can recall. I still wonder how the 500 pound bomb been sitting in the ground so many years, right in the center of the town, right by the shopping mall and no one noticed.
dingensundso 2 hours ago [-]
As a German living in Berlin it's still pretty normal that once in a while WW2 bombs are found during construction. Heavy bombs that didn't explode probably penetrated the ground quite a bit so when rebuilding it was probably just easier to just leave them there. That's just a guess.

There are also still bombs and grenades in the rivers. There are some magnet fishing YouTube channels where you can occasionally see them pulling up stuff like that.

msdz 2 hours ago [-]
> so when rebuilding it was probably just easier to just leave them there. That's just a guess.

My take (equally guessed): Among the literal rubble spread all over the cities, people constructing everything back up with whatever means possible couldn’t even recognize a mostly buried object as a bomb (instead of just more scrap from a collapsed building).

So less of an active decision to not deal with it, rather one out of necessity and/or not knowing about them, perhaps?

GolfPopper 23 minutes ago [-]
My own guess is that a fair number of them just buried themselves. While I don't have all the relevant facts at hand, per the US Naval Institute, a 550 lb bomb dropped form 20,000 feet would hit the ground at 880 feet per second [1]. If my rusty mind is correct, that would be around 9 megajoules, while feels like it ought to be enough to bury a bomb pretty well in any sort of yielding soil.

1. https://www.usni.org/magazines/proceedings/1941/december/how...

bell-cot 31 minutes ago [-]
> I still wonder how...

A 500 lbs bomb falling from altitude can bury itself a fair ways in soil. Most of its fellow bombs will have good fuses - and with the mess they make, it would take some careful excavation in just the right spot to find the dud bomb. (Or, maybe it fell in a patch of overgrown brush in a park, or in a river, or a farmer's pond, or ...)

And with the scale at which Germany was bombed in WWII, there was nothing remotely resembling the resources to carefully excavate all the myriad square miles where dud bombs might have fallen. Either during the war, or after.

smackeyacky 2 hours ago [-]
It’s worth tracking down a UK miniseries called “Danger UXB” that was made in the early eighties. Not sure how accurate the actual on screen dry ice and cut the red wire stuff was but as a character study of the men involved and the danger they were constantly in it was compelling viewing. Heartbreaking too. One of my favourite TV shows
robk 10 minutes ago [-]
Whoh 1979! Downloading now, thanks for the rec
AntonTrollback 1 hours ago [-]
Having to analyze 80 year old bombing records during new constructions adds to the long list of downsides of wars
bell-cot 13 minutes ago [-]
Even if every scrap of WWII bombing records had been kept, preserved, and properly indexed for that - WWII bomber navigation was nothing near accurate enough for it to be very useful. I'd figure the builders just go with their local knowledge - of how many WWII bombs have turned up, and where, and things to watch out for.

BTW, Europe has similar problems with dud artillery shells, old minefields, etc. And it's not just WWII, nor just Germany. The most infamous is probably https://en.wikipedia.org/wiki/Red_Zone_(World_War_I)

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