Norfolk Southern, Penn Central Heritage unit 1073 NS 1017, leads a northbound coal train N07 on the ex Monongahela Railway, at Clarksville, Pennsylvania. October 25, 2012. Jack D Kuiphoff © photo

The Penn Central heritage unit drifts by the DED at MP 72 with 130 cars loaded at the Blacksville #2 mine at a restricted track speed due to repairs to a broken rail.

With a string of rebodied hoppers in toe, a load a black diamonds with the Penn Central unit at the helm makes its way northward along the Monogahela River.