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423 Dead in Fréjus in December 1959: What Caused the Malpasset Vault Dam to Give Way Was neither Its Concrete nor Its Vault

Summary by SciencePost
A 40-metre wave shaved a part of Fréjus in about 20 minutes, and for years everyone believed that the concrete of the dam had given way under pressure. That's not true. The real manager was under construction, invisible, taped into the rock itself. To remember On December 2, [...]
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A 40-metre wave shaved a part of Fréjus in about 20 minutes, and for years everyone believed that the concrete of the dam had given way under pressure. That's not true. The real manager was under construction, invisible, taped into the rock itself. To remember On December 2, [...]

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SciencePost broke the news on Monday, October 26, 2026.
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