{TAIL ~ The unused combustible atmosphere} in the chamber above the parts on {HEAD ~ the belt} is ignited using a burner and vented through the vent in the chamber 
{ TAIL ~ The unused combustible atmosphere } in the chamber above the parts on { HEAD ~ the belt } is ignited using a burner and vented through the vent in the chamber
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH