The machinery would be mostly autonomous / robotic, with a minimum human presence, and probably the construction of the mining and processing machinery would be done in space, using much smaller equipment with somewhat similar functions. Hmm, that does sound like Outland. Sean Connery, wasn’t it?
It was basically a remake of High Noon, set in space. I'm pretty much a sucker for movies with Sean Connery or space themes.
Connery is the Marshal who uncovers corruption underlying a series of deaths. The bad guys come after him and he gets no help from the locals.
But, it got me to wondering what mining elsewhere in the Solar System might look like.