PROSPERITY, Pa. (AP) — Authorities say a coal mine worker was killed when a long wall of coal collapsed on top of him at a mine in western Pennsylvania. The wall collapsed around 6 p.m. Thursday in the Enlow Fork Mine in Prosperity, about 40 miles (64kilometers) southwest of Pittsburgh. State police says 25-year-old Tanner Lee McFarland of Washington, Pennsylvania, was killed in the accident. But the cause and manner of death have not been determined. No other injuries were reported in the collapse.