I'd note that Union Carbine paid out 470m dollars (970m 2018 dollars) to resolve claims - they also paid for and funded a hospital in the area as well. While its pretty clear that UCIL was very very negligent in plant maintenance, training and operations - its not abundantly clear that any of these were the proximate cause of the disaster - but rather contributory factors (which greatly enhanced the death toll) - its…
So 'maybe it was sabotage' seems corporate blame shifting. It was somewhat unclear exactly how anything in there happened. That was their problem. It was only a matter of time before an accident happened.