NS #4137 & #9817 Overtaking an eastbound coal train in Cassandra, PA.
NS #3657 & #7530 pulling and #6312, #6321, #6324 & #6329 pushing an eastbound coal train up the grade in Cassandra PA.
NS #6312, #6321, #6324 & #6329 Pushing hard up the hill in Cassandra PA.
