Installation for the storage of petroleum or other liquids that are lighter than water, on a bed of water, in hollow chambers housed below a level of water, as in rock, characterized in that the liquid or liquids are conserved in one or several containers arranged inside the hollow chamber, which communicate on the bottom with the bed of water that rises there in the container, but whose side walls and roof are waterproofed against the surrounding water. (Machine-translation by Google Translate, not legally binding)
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