While significant policy changes are still needed to ensure the industry will make a full comeback
Don't be a fool Wulfric. the industry (or more pertinently the stable jobs it provided in Appalachia) will never make a full comeback, even if trump bans fracking and cripples renewable energy. The Appalachian coal is almost fully exploited and other coal basins are mostly automated transient flexijobs. There is no significant export market that will pop up in the next few years. Your idealogy has crippled all the protections and unions that made coal work a rewarding job in the first place.
Basically thermal coal is dead or dying. Met coal is probably in a better shape, but the idea the economy will rebound based on that is pretty delusional