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