LDJ04 returns west from GM with a pair of GP15-1s and a GTW autoparts boxes.

UPY 586 (GP15-1) joins other light power for sorting freight cars in the UP's North Yard.

UPY 586 (GP15-1) muscles a new cut of cars out of the yard for sorting while a quartet of heavies, which have just dropped of a train, moves in for servicing.

There is a good variety of UP power sitting in the south end of the 36th Street Yard. To the right is the Rino station of RTD's A-Line which connects Denver's Union Station with Denver Internatio... (more)

UPY 586 (GP15-1) gives the crew a ride as it pulls a cut of freight out of the 36th Street Yard for sorting.

UPY 586 (GP15-1) strains to pull a load of cars out of the 36th Street Yard ladder for sorting

GATX 2679 helps UPY 586 and the other UP engines sort cars in the 36th Street Yard.

You can usually find a collection of GP15-1's at the UP's North and 36th Street Yards in Denver.

It was a hot, hazy, active evening in the UP's 36th Street Yard in Denver, with a nice variety of engines including UPY 586 (GP15-1), UP 700 (GP38-2), UP 1817 (SD40N), UPY 618 (GP15-1) and UP 8990... (more)

Remote operated UPY 586 (GP15-1) has just released a pair of Railbox cars into the 36th Street Yard. Soon the crew will head back into the yard to pull another string out and begin the sorting du... (more)

UPY 586 (GP15-1) heads back to the 36th Street Yard freight as UPY 647 gets ready to shuffle a string of container cars.

UPY 586 (GP15-1) bring a freight into the south entrance of the 36th Street Yard.

Originally built for the Missouri Pacific in 1976, this 'baby tunnel motor' GP15-1 can be found (along with many other GP15-1's) working the UP's North and 36th Street yards in Denver.

This view catches a glimpse of the south half of the UP's 36th Street Yard in Denver.

Taking a mixed freight and their lunch box to the 36th Street Yard.