Science: Tidal Power

Ever since electricity came into its own, harnessing the potential of the tides has been one of man's pet schemes.* It remained for the power-short French to translate a major scheme into action. Last week Electricité de France, the nationalized power combine, announced that work would start next spring on a $57 million tidal project near Saint-Malo on the Brittany coast.

Key to the power project will be a concrete dam, 625 ft. long and 154 ft. thick, across the narrow estuary of the River Rance. Twice daily, as the 27-ft. tide rises, the sea will flow through the dam's water gates...

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