{HEAD ~ A retaining wall} for {TAIL ~ an earthen formation} uses welded wire face mats having upright portions secured to one another and spanning the distance between successive lifts of the wall at the face of the formation 
for
{ HEAD ~ A retaining wall } for { TAIL ~ an earthen formation } uses welded wire face mats having upright portions secured to one another and spanning the distance between successive lifts of the wall at the face of the formation
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH