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PARIS-The partial collapse of a terminal at France's Charles de Gaulle International Airport likely stemmed from deterioration of the concrete used in the 1-year-old structure, according to French transportation authorities, but liability for the accident has not been determined.
Four people were killed and others were injured on May 25, when part of the roof of the airport's Terminal 2E collapsed.
In a report issued last week, government investigators conclude that the collapse occurred after metal struts, which separate the tube-shaped building's outer glass layer from an inner layer of reinforced concrete, punctured that inner layer. The penetration of that layer, which caused the roof to fold in on itself "like a wallet," likely resulted from degradation of the concrete, the report notes.
Investigators are still trying to determine what factors led to the deterioration of the concrete. A separate criminal inquiry will attempt to decide who was responsible.
The facility, which is operated by...