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