A carman confers with the head end crew of the 3113. They are probably doing an air test before departure. Meanwhile, the 5304 is shoving the train together on the adjacent track as the 5393W on the right departs.
A trainman lines the switch to the loadout track at Somerset in October of 1978. They will shove back, tie on to the empty hoppers and begin loading the train.
Loading at Somerset has begun. The yellow corners on the cars indicate that they are assigned to US Steel at Geneva, UT. This train could be either a 733 or 783.