Apparatus 1, wherein said wear plate means comprises a plurality of arcuate wear plate sections, each having {HEAD ~ a beveled end} for cooperating with {TAIL ~ an adjacent section} 
for cooperating with
Apparatus 1 , wherein said wear plate means comprises a plurality of arcuate wear plate sections , each having { HEAD ~ a beveled end } for cooperating with { TAIL ~ an adjacent section }
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 HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL