You would set the chunk reset time to whatever... 30 days.. as long as you visited the mine every 30 days it would not fill back in. You would also be able to say no reset, ever, then loot and nothing would reset, except for quest pois, which would be how I would play in SP. But for MP having it reset frequently would be good for busy servers. I'd also want maybe an additional thing besides a bed or land claim, that preserved chunks so bridges you made wouldn't get wrecked. Like a light land claim that preserved it without bonus hit points.