It never made much sense as a mining station.
Command and Control, that makes more sense.
That was one of the points made in the Nitpicker's Guide, I believe. It made no sense to mine raw ore on a planet, then transport all that ore to a space station to refine. Talk about a waste of resources. No wonder the Cardassian economy collapses with that kind of mentality .
Or "ore processing station" was just a cover story.