{HEAD ~ Method} and device for melting and refining {TAIL ~ materials} capable of being vitrified 
for refining
{ HEAD ~ Method } and device for melting and refining { TAIL ~ materials } capable of being vitrified
HEAD HEAD HEAD HEAD HEAD OTH OTH REL OTH OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH