“A production at this historical and cultural remove could put its energies into filling in some of the blanks in Hall’s script, but that’s not Feore’s MO here. She rather embraces the material as a series of opportunities for what she does best: large-scale production numbers with kinetically inventive choreography. The tour de force is “Solidarity,” the hookiest song in the show, which sees confrontations between striking miners and the police mediated by children.”