In {TAIL ~ the preferred embodiment}, plate 48 is composed of {HEAD ~ a refractory material} which conducts and reradiates heat generated by heating elements 38 
In { TAIL ~ the preferred embodiment } , plate 48 is composed of { HEAD ~ a refractory material } which conducts and reradiates heat generated by heating elements 38
OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH