For the remainder, {HEAD ~ the powder} can contain {TAIL ~ the conventional impurities} of a steel melt 
contain
For the remainder , { HEAD ~ the powder } can contain { TAIL ~ the conventional impurities } of a steel melt
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH