The frieght traffic into and out of the plant is handled by Norfolk Southern over Amtrak's Keystone line. The NS trains can be heard on 160.635 (Amtrak Keystone Line dispatch), 160,800, and 160.860 (both NS frequencies). 160.800 is used by the crews to call the NS dispatcher when coming off Amtrak back onto NS tracks at Thorndale.
Not sure what the trains run by the plant (and moving stuff around the facility) are working on right now.