Subsequent process step V4 of {HEAD ~ the separation} of coarse components substantially reduces {TAIL ~ the wear} in the next process step V5 of the main size reduction 
Subsequent process step V4 of { HEAD ~ the separation } of coarse components substantially reduces { TAIL ~ the wear } in the next process step V5 of the main size reduction
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH