Several shots of construction of CNR train station, steam shovels, cranes, pile drivers, much smoke and vapour in winter air. Shots of men pouring concrete, men working in sewer. Interior shot of sewer showing manhole, man coming in. Exterior shot of crane lowering round concrete form around manhole. Shots of crane at work, Notre-Dame-Marie-Reine-du-Monde Cathedral in immediate background. Several shots of welders at work, one cutting steel fence. Shot of two men carrying fence away. Shot of street, a few cars driving by, snow. Shot of south entrance to Mount Royal tunnel, mountain, cross in distance, open cut in foreground.