The absorber rod comprises {HEAD ~ cladding} of {TAIL ~ stainless steel} closed by plugs and containing a column of absorber pellets e.g. of boron carbide 
of
The absorber rod comprises { HEAD ~ cladding } of { TAIL ~ stainless steel } closed by plugs and containing a column of absorber pellets e.g. of boron carbide
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH