The system also keeps to a minimum the costs of {HEAD ~ disposal} of {TAIL ~ the absorbent material} after it has served its function 
The system also keeps to a minimum the costs of { HEAD ~ disposal } of { TAIL ~ the absorbent material } after it has served its function
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH