What In The Wide Wide World Of Sports????

[FCIN]

Was in Danville, KY, Sunday (20100919) watching the endless parade of trains when I shot this "thing" tacked on the end of NS 111. Not placarded and no markings to indicate what it might be or what it was hauling. Since 111 originates in Kansas City, MO and runs to Roanoke, VA via Knoxville, TN, we assumed that this thing was probably destined to Oak Ridge, TN, but that's just a guess. Any one have any idea what this might be???