MP 3231:1
This loco was built in 9/1976 with EMD serial number 766005-11. She was built as a freight roadswitcher, model SD40-2. She came equipped for run through unit coal train service with the D&RGW and was therefore built to D&RGW specifications with both dynamic brakes and oscilating headlights, unlike most other MP locomotives.
She was renumbered to MP 6015 to denote her special service assignment around 1978.