Upon {HEAD ~ subsequent heating}, the dried coating reacts to produce {TAIL ~ a glassy ceramic repair coating} 
Upon { HEAD ~ subsequent heating } , the dried coating reacts to produce { TAIL ~ a glassy ceramic repair coating }
OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL