{HEAD ~ A door} 54 is provided for {TAIL ~ sealing}, in the preferred embodiment, compartment 50 from gaseous communication with the atmosphere exterior to the kiln 
is provided for
{ HEAD ~ A door } 54 is provided for { TAIL ~ sealing } , in the preferred embodiment , compartment 50 from gaseous communication with the atmosphere exterior to the kiln
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH