Many railrads hauled Coal into the south primarily for power plants and some for the steel industry around Birmingham AL. N&W hauled into North Carolina. Clinchfield/C&O coal to Spartanburg, SC and to a connection with SCL at Bostic, NC. L&N into the Florida panhandle, Southern RR hauled coal all over the south. And I suspect some via the ACL with it's connections to the C&O and N&W.
I think most of this traffic developed after WW2 when power plants began to switch over from Oil to Coal Fired Power Plants.
And I belive that even Florida had electrity by this time.
George A Walls
I might add
that I doubt that such coal carrying cars entered the state of Florida veryI'd like to know more about how far south coal
moved by train in our period.