Preferably, {HEAD ~ a conveyor} is positioned beneath {TAIL ~ the receptacle}, to catch and discharge the material which falls through the screen or other classifying openings to a pile located away from the receptacle 
is positioned beneath
Preferably , { HEAD ~ a conveyor } is positioned beneath { TAIL ~ the receptacle } , to catch and discharge the material which falls through the screen or other classifying openings to a pile located away from the receptacle
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH