The method 3 wherein the pressure to which said heated glass is subjected is {HEAD ~ a pressure} of {TAIL ~ about 70,000 psi} 
of
The method 3 wherein the pressure to which said heated glass is subjected is { HEAD ~ a pressure } of { TAIL ~ about 70,000 psi }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL