{HEAD ~ Optical fiber assemblies} having {TAIL ~ a powder or powder blend} at least partially mechanically attached 
having
{ HEAD ~ Optical fiber assemblies } having { TAIL ~ a powder or powder blend } at least partially mechanically attached
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH