Preferably the fibers are cracked whereby they exhibit {TAIL ~ highly reflective surfaces} especially useful in the reflection of heat produced by {HEAD ~ a fire} 
Preferably the fibers are cracked whereby they exhibit { TAIL ~ highly reflective surfaces } especially useful in the reflection of heat produced by { HEAD ~ a fire }
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD