LOUISVILLE, Ky.—With a federal investigation into technically active but non-producing “zombie” mines set to begin in March, a citizens law group in Kentucky has found production idled at nearly 40 percent of all active coal strip mines in the state, with some not mined in more than a decade. In all, these “functionally abandoned” mines—48 … Continue reading Congressional Office Agrees to Investigate ‘Zombie’ Coal Mines