The grain dryer further includes a metering roll positioned to contact grain advancing out of {TAIL ~ the discharge opening} of {HEAD ~ the grain column} 
The grain dryer further includes a metering roll positioned to contact grain advancing out of { TAIL ~ the discharge opening } of { HEAD ~ the grain column }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD