As best shown in FIG 3, the bottom section of kiln 10 is provided with {HEAD ~ a floor} 44 having {TAIL ~ an opened portion} 45 central thereof 
As best shown in FIG 3 , the bottom section of kiln 10 is provided with { HEAD ~ a floor } 44 having { TAIL ~ an opened portion } 45 central thereof
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH