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