And work also began on a series of projects to use the Danube as an energy source, in which PORR was to play a major role until the mid1990s. The construction of the bbs-Persenbeug power plants saw the first use of spectacular excavation technology. In order to make the construction pits watertight, planks were driven into the riverbed for weeks before the actual work could begin German The construction of the Tauern power plant Glockner-Kaprun from 1951 to 1955 was to be the first in a series of renowned power plant projects.
PORR becomes international.
At the beginning of the 1970s, PORR had already been a proud co-shaper of Austria for more than 100 years. In this century the company has acquired great expertise in virtually all areas of the construction industry: Industrial and housing structures, tunnels, pipelines, roads, underground car parks, railway lines, power plants. The New Austrian Tunnelling Method is revolutionising civil engineering worldwide. Ready-mixed concrete is increasingly used in cities, and PORR is also involved in the development of new road surfaces.
From 1973 PORR is involved in the construction of the Vienna underground network. This extraordinary construction project requires state-of-the-art technologies, enormous precision and the best engineers in the country.