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

Not directly bomb related but another good UK series from the 80s that gives a good impression of how so many bombs ended up undiscovered is "The Machine Gunners".

My parents were around the age of the children in the series during WW II in Germany and what they recounted matched how the children experienced the time pretty well.

While searching for that I discovered "U.X.B." a 1942 UK bomb disposal training film that is surprisingly thorough in description of the types of German bombs, fuses, and how to report UXBs (during WW2)

https://www.youtube.com/watch?v=vhpmXeCp6sc

Whoh 1979! Downloading now, thanks for the rec