Re: A 1980s minicomputer at the bottom of a mine ?
That's about as stupid as putting backup power generators in the basement of a building that might get flooded. No, you put them on the roof.
Only worthwhile if you put the fuel tanks up there as well. ISTR that a few years back when a huge storm flooded Manhattan one company found out the hard way that leaving the diesel tanks in the (now flooded) basement was not such a bright money saving idea as they had thought.