Need a lot more information but probably not enough space and airflow.

How large are the windows? Can you but in large loud high speed fans?

What is the average humidity? Higher humidity will cause issues if you are just opening the windows rather then running the air through some form of chiller.

Design of the space? An open square is different to cool then a long rectangle.

Ceiling height (heat rises spacing the miners out will help a bit)

Will you need sound baffles? What is nearby that may cause problems due to the noise of 100 miners screaming away.

And so on. The forum can only get you so far, you will need a talk to a local architect and engineer to get the rest of the way.

-Dave