I worked on a mining project years ago where we had to dewater the mine of 90 degree Celsius water at 700L/s. Always wondered whether we can use it for energy….
You could use it for district heating of buildings in winter, but that's about it.
As the article mentions, you need to get above the phase transition between liquid and gas at high pressure (they mention 150c) to be able to reliably and quickly convert the thermal energy into kinetic, then into electrical inductance (gas expansion moving a turbine, moving a dynamo).
Maybe if you went into business making pot roast, you could cook meat low and slow, or set up massive dehydrators.
Running it under a shallow drying bed might make salt extraction from water evaporation faster, too.
Sadly, none of those things tend to be very close to mines.