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