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A Mother and her Slugs + Tons of Export Coal - A Curtis Bay CSX Moment

A Mother and her Slugs + Tons of Export Coal - A Curtis Bay CSX Moment

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A Mother and her Slugs + Tons of Export Coal - A Curtis Bay CSX Moment

At the CSX Curtis Bay Coal Terminal Piers in Baltimore, a modified EMD GP-39 diesel-electric locomotive with two "slugs" is shunting hopper cars, full of coal from mines to the west. The slugs are "almost-locomotives" equipped with traction motors only (no prime movers or generators); they use excess current from the locomotive to boost overall traction to handle heavy loads at low speeds. The leader ("mother") is also different in that it was modified for operation from outside the traditional cab. The "mother-and-her-slugs" are used to shunt heavy cuts of coal hopper cars into the dumper, one of the last steps between the mines and ocean going coal vessels.

From a film image.

©2025 Steve Ember

Comments 1

  • Adele D. Oliver 30/04/2025 5:45

    a train and wagons of a different sort, and your
    explanations very interesting ... a moment well
    timed, sounds like you filmed them chugging by -
    no idea how you made this film image ... interesting
    also the mountains of coal and industrial constructions
    in the background  !!
    warm regards,
    Adele