Coal, either as coal fines or as coal briquettes, is introduced into a coking chamber and is thereat exposed to microwave radiation to transform {HEAD ~ the coal} into {TAIL ~ hot coke} 
into
Coal , either as coal fines or as coal briquettes , is introduced into a coking chamber and is thereat exposed to microwave radiation to transform { HEAD ~ the coal } into { TAIL ~ hot coke }
OTH OTH OTH OTH OTH OTH 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 HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL