Yeah, I'm thinking a warehouse with two large garage doors rather than one so I can do something like intake for one door, have the miners lined up in the middle, exhaust for the other door and create a "U" if I were to visualize the airflow.
One space I was looking at to move my operation into was a smallish warehouse with a garage door on each end (part of a "warehouse/shop" building complex).
The primary reason I decided against it was that there was no "man door" at all, and my knees don't handle stairs reliably any more - both garage doors were at "pickup/semi trailer" height.
Airflow would have been trivial to set up though - louvered "inserts" under each door and straight-through airflow.