Great one, Joe.
I wish I had a camera but I was a bit 'busy' that day.....We had one of our institutions trip out, which of course started a panic. I went to the substation..where it went from 12.5 to 4,160, and isolated the shorted circuit, by then I was joined by 3 other guys. When I saw which circuit was out, it was a quick deduction.
The institution had been wired around the turn of the century, it was the standard to put pole transformers in a vault, there was only one of these originals still left, and that was the circuit. The sump pump had failed and the vault was full of water. That was a 15 X 15 room, 10' high with about a 6' collar.
The entire thing was still boiling when we opened the manhole lid, but hey, didn't take long to dry once we pumped it