More Retro Power

BNSF 1791, an EMD SD 40-2, was coupled to BNSF 2685 in the Pueblo rail yard.

I’ve read SD stands for Special Duty (and I think they all have 6-wheel trucks), while the GP stands for General Purpose (and have 4-wheel trucks).

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One thought on “More Retro Power

  1. Pingback: Roster Shot — BNSF 1791 | Simplify…

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