Vajont Dam - Construction

Construction

The dam was built by SADE (Società Adriatica di Elettricità, English: Adriatic Energy Corporation), the electricity supply and distribution monopolist in North-Eastern Italy. The owner, Giuseppe Volpi di Misurata, had been Mussolini's Minister of Finances for several years. The 'tallest dam in the world', across the Vajont gorge, was conceived in the 1920s to meet the growing demands for industrialization, but not until the confusion after Mussolini's fall during World War II was the project authorized on 15 October 1943.

The dam and basin were intended to be at the centre of a complex system of water management in which water would have been channeled from nearby valleys and artificial basins located at higher levels. Tens of kilometres of concrete pipes and pipe-bridges across valleys were planned.

In the 1950s, SADE's monopoly was confirmed by post-fascist governments and it purchased the land despite opposition by the communities of Erto and Casso in the valley, which was overcome with government and police support. SADE stated that the geology of the gorge had been studied, including analysis of ancient landslides, and that the mountain was believed to be sufficiently stable.

Construction work started in 1957, but by 1959 shifts and fractures were noticed while building a new road on the side of Monte Toc. This led to new studies in which three different experts separately told SADE that the entire side of Monte Toc was unstable and would likely collapse into the basin if the filling were completed. All three were ignored by SADE. In October 1959 construction was completed and in February 1960 SADE was authorised to start filling the basin.

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