a) a welded wire face mat having an upright portion of an extended height for disposition over a portion of {HEAD ~ the face} of {TAIL ~ the formation} 
of
a ) a welded wire face mat having an upright portion of an extended height for disposition over a portion of { HEAD ~ the face } of { TAIL ~ the formation }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL