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