Hudson Terminal Railroad's #4027 (RS4TC) runs into the yard and will begin sorting oil cans.

Hudson Terminal Railroad's #4102 (SD40-2) works a cut of stack cars at the terminal facility in Hudson, Colorado.

Hudson Terminal Railroad's #4027 (former US Army RS4TC) runs to the yard past the wildflowers that have bloomed with recent rains.

Hudson Terminal Railroad's veteran #646 (Alco S1) heads into the yard to pull out a string of oil cans.

Hudson Terminal Railroad's #4027 (RS4TC) moves a cut of oil cans in the yard in Hudson, Colorado.

Hudson Terminal Railroad's SD40-2 motors build a stack train in the terminal at Hudson, Colorado.

Hudson Terminal Railroad's Alco S1 works a cut of oil cans in the large yard in Hudson, Colorado.

Hudson Terminal Railroad's #646 (Alco S1) moves a cut of hoppers towards the main track to be picked up by the BNSF at the terminal in Hudson, Colorado.

Hudson Terminal Railroad's veteran Alco S1 moves a cut of oil can in the large yard in Hudson, Colorado.

The yard team helps Hudson Terminal Railroad's 646 (Alco S1) change tracks at Hudson, Colorado.

Hudson Terminal Railroad's #646 (Alco S1) moves a cut of oil cans in the large yard in Hudson, Colorado.

Hudson Terminal Railroad's Alco S1 passes a pair of BNSF motors waiting to take a cut of oil cans from the terminal to Denver, Colorado.

Hudson Terminal Railroad's 79 year old Alco S1 moves a cut of sand hoppers through the yard in Hudson, Colorado.

Hudson Terminal Railroad's #646 will turn 80 years old this year, having been built in 1946 for the Detroit & Mackinac Railroad. You can find it working the oil can terminal in Hudson, Colorado. ... (more)

The 79 year-old Alco S1 of the Hudson Terminal Railroad (built in 1946 for the Detroit & Mackinac Railroad) passes a pair of vintage heavy weight passenger cars as it moves through the yard.