According to a good source from UP, UP contracted with EMD to convert 10 SD60Ms into SD59M-2s. SD59M-2: SD = Special Duty (as it always has), 59 = 3000 HP (from a 12-cylinder 710 prime mover), M = Safety Cab, -2 = EPA Tier 2 compliant.  The work is being done at EMD's London, Ontario plant. Repainting will be done at NLR. These have new flared radiators and are more eco-friendly. Here are a few shots of two of them in the North Little Rock yards on July 11, 2010. (Photos by Ken Ziegenbein)


UP 2518, side view.


2518's cab view.


Flared radiator view of 2518.


UP 2508 side view.


2508 cab view.


Radiator view of 2508.


Rear of 2518.

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