{HEAD ~ This compression} aids in preventing {TAIL ~ the frame} 40 from sliding on the tie 12, and further seals the rail seat area 18 beneath the tie pad from any incursion of moisture 
{ HEAD ~ This compression } aids in preventing { TAIL ~ the frame } 40 from sliding on the tie 12 , and further seals the rail seat area 18 beneath the tie pad from any incursion of moisture
HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH