This results in reduction of {HEAD ~ unacceptable sheet products} and economy of {TAIL ~ a driving power expense} 
This results in reduction of { HEAD ~ unacceptable sheet products } and economy of { TAIL ~ a driving power expense }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL