UPY 1323, a former Chicago & Northwestern MP15DC (notice the insulated windows), heads into the 36th Street Yard in Denver to sort more freight cars.
UPY 1323 (MP15DC) works the 36th Street Yard while UP 5870 (AC44CWCTE) brings in a new freight which will be dropped off and later sorted.
UPY 1323 (MP15DC) waits with a mate in the UP's North Yard for the call to shuffle freight cars.
A pair of sibling MP15DC's wait for sorting assignments in the UP 36th Street Yard. Both UPY 1323 and UPY 1324 were built in 1975 for the Chicago & Northwestern Railroad.
Remote control conjoined MP15DC’s work the North Yard.
The UP uses a variety of light power in the 36th Street Yard, including GP15 and MP15DC units.
UPY 1323 (MP15DC) belches smoke as it starts up in the freezing temperature of a Colorado morning.