{HEAD ~ A gas burner assembly} for heating a subsurface formation includes an oxidant conduit, a fuel conduit, and {TAIL ~ a plurality} of oxidizers coupled to the oxidant conduit 
{ HEAD ~ A gas burner assembly } for heating a subsurface formation includes an oxidant conduit , a fuel conduit , and { TAIL ~ a plurality } of oxidizers coupled to the oxidant conduit
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH