That has to be prevented from happening, and those mines have pumps in them. Otherwise land around gets poisoned (and also eroded).
So putting useful objects inside those mines at least makes them not just passive expense.
If someone wants to know what if you just don’t pump the water out of an unused mine, leaving it be, then they can read what happens in Donbass now that nobody takes care of those many depleted mines there, due to war. It’s like Mordor basically.
What a inefficient use of land, let alone what’s being built on it.
Honestly I would probably prefer data centers built in old open pit mines before the mine gets filled back in.
Or maybe build them in Alaska for example where it’s cold, or space like a halo?
That has to be prevented from happening, and those mines have pumps in them. Otherwise land around gets poisoned (and also eroded).
So putting useful objects inside those mines at least makes them not just passive expense.
If someone wants to know what if you just don’t pump the water out of an unused mine, leaving it be, then they can read what happens in Donbass now that nobody takes care of those many depleted mines there, due to war. It’s like Mordor basically.
It’s cheap to build on that land and labor is cheap and less legal fight against the company if some fuckup happens