I visited an old lumber mill a few years ago because they were blowing up VFDs right and left. What I found after looking at some serious floating ground reference voltages was that all 3 of their pad mount service transformers (old mil, several expansions) had no bonding to ground, they had all been cut, presumably stolen by tweakers. That could have gone terribly wrong. Their transformers had chain link fences around them, but nobody ever paid attention to the fact that the locks had been cut. Going backward from when they started losing their VFDs, it had probably been that way for over a year.
About 15 years ago now, I was building 300-500 HP soft starters for farmers in the Central Valley of California because the farmers were having to cease using diesel pumps. Tweakers would steal the submersible pump cables by cutting them off in the starter, then hooking up their truck to the pump cables and driving off, letting the cables snap where they will, which of course dropped the pump into the well and left it unrecoverable. I got to one site to start up the soft start only to discover the bumper of a truck laying there still attached to the cables. The license plate was still on the bumper, but it turned out to be a stolen truck. Rumor had it that whenever one of these tweakers was caught in the act, they were never seen again.