Quick google search turned up some interesting reads about past UXO removals:
Australian Clearance Divers clean up unexploded ordnance in the Solomon Islands
I'm gobsmacked. Here's one quote that I just can't get over:
“Many of the UXOs had to be destroyed in situ as they were too dangerous to move. In one case a village had to be evacuated while a naval shell was rendered safe with a carefully placed shaped charge. The fuse of the shell in question was in such an unstable state that the slightest nudge could still have set it off."
72 years later and this is still live ordnance. Wow.
It looks like this move and this job isn't going to be anything like the others.