introducing reinforcing material to a cavity at an angle of less than 90° with {HEAD ~ respect} to said {TAIL ~ conduit} 
introducing reinforcing material to a cavity at an angle of less than 90 ° with { HEAD ~ respect } to said { TAIL ~ conduit }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL OTH TAIL TAIL TAIL TAIL TAIL