UP 801 (GP38-2) gets ready to pull a cut of cars out of the Union Pacific's North Yard in Denver, Colorado.

UP 801 (GP38-2) sits in the UP's 36th Street Yard. in the 12 years since this photo was taken the 36th Street Yard has gone through a massive transformation, which now includes RTD commuter rail,... (more)

UP 801 (GP38-2) holds station with a bay window caboose and some heavies, including a Southern Pacific unit.

UP 801 (GP38-2) sits next to a rare operational bay window caboose in the Union Pacific's North Yard in Denver, Colorado. The caboose is used as a shoving platform for a local run that requires t... (more)

UP 801 (GP38-2) sits next to a wide body heavy in the Union Pacific's North Yard in Denver, Colorado.

A mix of light and heavy power crowd around the sand and fuel islands in the Union Pacific's North Yard

The remote engineer of UP 801 repositions in the North Yard.

The remote engineer sends UP 801 to the south end of the UP's North Yard in Denver, where it will work for the next 20 minutes sorting cars back into the yard ladder.

UP 801 (GP38-2) backs a load of ballast into the yard which will be used once the new automated switches are installed.

There is a bit of a traffic jam in the Union Pacific's North Yard as a pair of light power and a quartet of heavies wait for UP 801 to finish shorting a cut of freight cars.

There is lots of activity in the UP's North Yard on a cold January morning.

A fresh layer of snow in the UP's North Yard brings out the colors of the GATX and UP units waiting for assignments.

UP 801 (GP38-2) meets UP 2327 (SD60M) in the 36th Street Yard.

There has been a noticeable increase in the last couple months of engines going through the UP's North Yard. A sign of the current booming economy.

UP 801 and 825, both ex Missouri Pacific GP38-2's, work the 36th Street Yard in a snowstorm.