| description: | A Line Of Over 40 Construction Workers In 1954 Pose Along A Huge Prestressed Concrete Beam (Made By Preco Division) Being Used In The Construction Of The Causeway (Raised Road Over Water) At Lake Manitoba Narrows. The Beam, Is Sitting On An Extended Truck Bed With 24 Tires, Awaiting Placement On The Causeway Foundations. Photo Courtesy Gunnlaugsson Collection |