A mine run, with the lead engine still in N&W livery, switches at the south end of the Moss 3 prep plant. Although Moss 2 and Moss 3 mines had ceased operations a few years earlier, significant coal was still delivered to the prep facility, as evidenced by the massive storage piles in the background.
The EMD SD (special duty) series are a strong and reliable kind of locomotive which still serve America's rails today. They have proved themselves reliable by clocking in several million miles of freight service over several decades.