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