Photo caption from published photo: "OFFICIAL OPENING - E.W.R. Steacie (right) president of the National Research Council, unveiled the plaque at the University of Waterloo physics and mathematics building yesterday officially opening the $2,500,000 structure. Shown with him are J.G. Hagey (left) president of the university, and Ira G. Needles (centre), chairman of the board of governors. About 400 people were present for the ceremony."