Really.
I'm the owner of a coal mine; I've made enough money and no longer need the headaches associated with unions - so I decide to close my mine. What are you as the miner going to do about it?
/hypothetical
“- so I decide to close my mine. What are you as the miner going to do about it?”
Go to the federal government and lay claim to the mine that is no longer being used and re-open it. Rare is it that a mine is completel on private property or on property that cannot be claimed once the mine shuts down.
My family owns a gold mine (for real, no kidding) and if we do not mine it per federal schedule then the claim can be jumped.