Turning to the drawings, FIG 1 illustrates a switch heating assembly 2 for use in {HEAD ~ heating rails} 10 mounted on {TAIL ~ ties} 12 
mounted on
Turning to the drawings , FIG 1 illustrates a switch heating assembly 2 for use in { HEAD ~ heating rails } 10 mounted on { TAIL ~ ties } 12
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL OTH