MONOLITHIC GLASS AS A STRUCTURAL MATERIAL,
  Survey Report IDP 2703, Naval Ordnance Test Station, Pasadena, CA, by N.B. Estabrook, February 1967, 67 pages.

Because of new processes and techniques in the manufacture of monolithic glass, it has become feasible to use this material in a much greater variety of applications than ever before. The dominance of steels, aluminum, titanium, and other classical structural materials in areas where high strength is required has been successfully challenged and, in many special-purpose applications, even superseded by glass. Attainment of working stresses as high as 300,000 psi disproves the age-old idea that glass is inherently unsuitable as a structural material.