With door 54 and cover 14 in {TAIL ~ their closed position}, as shown in FIG 3., a substantially air tight chamber 56 is formed in the interior of {HEAD ~ kiln} 10 
With door 54 and cover 14 in { TAIL ~ their closed position } , as shown in FIG 3 . , a substantially air tight chamber 56 is formed in the interior of { HEAD ~ kiln } 10
OTH OTH OTH OTH OTH OTH OTH TAIL 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 HEAD HEAD HEAD HEAD HEAD OTH