When the SD50s and C36-7s were new, it seemed that MP/UP made an effort to run the two new types together, but - for a while, at least - to not mix them with older C-Cs. Here, a trio of new SD50s... (more)

A brand new MoPac SD50, sporting Union Pacific colors, is at the former C&EI Yard Center awaiting its first revenue move. Tom Golden photo.