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