Sam, very few freights except local freights went through Grenada; the through freights went through the Delta, coming onto the direct Memphis-Jackson line at North Jackson.
The speed limit (after the IC issued its dictum) for passneger trains was 79 mph--but this was not observed; from personal observation in the cab of #1 one evening in 1965, I saw the speedometer hanging around 90 mph (I rode the engine from Memphis to Grenada that evening, and went to my coach there). Of course, coming in to and leaving Grenada the train did not run that fast since Grenada was a sceduled stop for all passenger trains.
I do not think that it was still there in the late sixties.
