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