UPY 570 (GP15-1) huffs while pulling a string of tanker cars around the 36th Street Yard.

UPY 570 (GP15-1) teams up with LLPX 2227 and brings in a string of double-stack cars. Later UP 5025 and mate will hook up with the string and leave town. On this day the third rail is also activ... (more)

UPY 570 (GP15-1) works a string of freight at the 36th Street yard while UPY 1329 (MP15AC) sits solo on the sidelines.

A Colorado sunrise shines on UPY 570 (GP15-1) and team as they head into the 36th Street yard in Denver with a load of empty coal cars.

UPY 570 (GP15-1) breaks out of the morning shadows and heads to the 36th Street Yard with a load of coal cars. Great to see the 'old school' SP Cotton Belt in the mix.

UPY 570 (GP15-1) and UPY 1329 (MP15AC) wait for their assignment at the 36th Street UP yard.

UP team working hard in the 36th Street yard - UPY 631 (GP15-1), HLCX 3856 (GP38-2), UPY 1321 (MP15AC), UP 570 (GP15-1) and UP 1329 (MP15AC).

Ex-MoPac GP15-1s are among the variety of diesels in UP's North Yard today, along with partially-patched SP/UP 6158.

The Mile High local job drifts toward the yard in late afternoon.