Board Thread:Speculation House/@comment-4830106-20130810030606/@comment-16774229-20130919023753

Something I just realized: If Dust is mined, it's presumably finite. Maybe there's not much left, and humanity will need to deal with an energy crisis and the Grimm at the same time or something. Or maybe it's just the mines in the safe zones that are going dry, and people will need to venture into Grimm infested wilderness to find more.