UPY 629 (GP15-1) works the North Yard in Denver, Colorado.

UPY 629 (GP15-1) works on shorting a string of freight cars in the Union Pacific's North Yard in Denver, Colorado.

UPY 629 (GP15-1) has solo duty in the Union Pacific's North Yard in Denver, Colorado. The remote control operator can be seen towards the rear of the train.

UPY 629 (GP15-1) works the North Yard, which happens to be adjacent to the BNSF intermodal facility. The bridge spanning both sets of tracks is a great place from which to watch the yard operatio... (more)

UPY 629 (GP15N) has solo duty moving cars around in the UP North Yard in Denver, Colorado.

The UP has slowly been repainting their aged fleet of ex Missouri Pacific GP15-1's and UPY 629 is one of the latest. Here it sits under the pedestrian bridge at the 36th Street Yard which links a... (more)

A couple of remote control operators from the UP's 36th Street Yard head back to the operations shack on UPY 629 (GP15-1).

With the Denver skyline in the background, UPY 629 (GP15-1) and a few other engines hold station in the 36th Street Yard.

UPY 629 (GP15-1) and partner are the 'monkey in the middle', sandwiched between two strings of freight.

The Union Pacific uses a fleet of GP15-1's in their 36th Street and North Yards in Denver. Most of the units are approaching 40 years old but they are still going strong.

UPY 629 muscles a string of cars in the North Yard

A wide view of the UP North Yard in Denver, with the engine servicing facilities on the left and the classification yard on the right. On any one day you can find a nice variety of light and heav... (more)

Baby tunnel motor UPY 629 (GP15-1) gets ready to hump the last car of a string.

A Remote Control Operator moves UPY No. 629 south while switching North Yard in Denver Colorado, during a spring blizzard. I bet he wishes he could get out of the weather in the warm cab of the EM... (more)

The UP yard crew gets ready to shunt a string of tank cars in the 36th Street yard