By way of example, the worker may place {HEAD ~ column} 12 on a table 16 or {TAIL ~ other stable structure}, and bring the belt sander 30 into contact with the exterior surface of the work piece 12 
By way of example , the worker may place { HEAD ~ column } 12 on a table 16 or { TAIL ~ other stable structure } , and bring the belt sander 30 into contact with the exterior surface of the work piece 12
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH