{HEAD ~ The shield} includes a plurality of {TAIL ~ openings} in communication with the oxidant conduit 
{ HEAD ~ The shield } includes a plurality of { TAIL ~ openings } in communication with the oxidant conduit
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH