Upon attainment of the desired temperature level, a selected quantity of the reducing agent is introduced into the chamber for producing a reducing atmosphere during {HEAD ~ the maturing} of {TAIL ~ the ceramic ware} 
of
Upon attainment of the desired temperature level , a selected quantity of the reducing agent is introduced into the chamber for producing a reducing atmosphere during { HEAD ~ the maturing } of { TAIL ~ the ceramic ware }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL