City Coal: NS 4140 leads a doubled-up NS 596 coal train off of the OC Bridge in Pittsburgh as it prepares to enter onto the Conemaugh line and head toward Altoona. In this photo, the coal train c... (more)

OC Coal: NS 4140 leads a doubled up NS 596 coal train off of the OC Bridge in Pittsburgh, as it prepares to enter onto the Conemaugh line and head toward Altoona.