The worker moves {HEAD ~ the belt sander} 30 longitudinally along the column to remove {TAIL ~ unwanted matter}, such as seam line 14 
The worker moves { HEAD ~ the belt sander } 30 longitudinally along the column to remove { TAIL ~ unwanted matter } , such as seam line 14
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH