At the Bell County Coal Company (now a Revelation Energy outfit) near Middlesboro KY, these two yard units were sitting idle.
I think this is a variation of an ALCO RS-2 EMD GP-series locomotive (see the comment below):
And this is a mobile railcar mover…not moving anytime soon, though:
Blogging the Railroad Tunnels 
The locomotive is an EMD GP-series locomotive, by the looks of it, a GP-7, GP-9, GP-18, or GP-20. They dynamic brake blister gives it away. The rail car mover is a “Track-mobile”, which are still made to this day.
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