The coal industry is dying. This is a natural death as progress in clean energy and concern for the environment have made coal fired electrical plants economically and operationally obsolete. But in order to pretend to be friends of the victims of the demise of the coal industr and those employed in it, Trumpie put out the false claim that he could restore it to life. He can't, it is dying.
But the good news is that one of the technologies that is taking the place of coal is labor intensive and that is where the jobs are being created.