Thank you. The steel mill runs a number of old units, but they don't ever seem to last long. My suspicion is that they buy 'em cheap, run them until they quit and then cut them up. I'm pretty sure this one still had its EMD 567 intact, as it sounded so sweet when it loaded up, just like the Geeps and Fs we remember when we were young.
I'd actually sought an NS train that afternoon and missed it by 30 seconds (

). I wanted to come home with something, so made a short trip by the CSX yard and happened to see this switcher dragging scrap metal cars back to the mill. Railfanning serendipity at its best.