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I once was involved in project where 60M m3 of sand was pumped to the desert from the sea. It felt totally insane; all that sand was dredged from the sea, mixed with a ton of water and then pumped for some 5-15km using up to 6 5MW pumps in series. Look for Al Zout refinery in Kuwait

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I worked on an Exxon project on Jurong Island in Singapore. Today, Jurong Island looks like one singular island but it used to be a series of islands that were reclaimed. It was amusing seeing an old ship cleat in middle of the plant, hundreds of meters from any nearby water.

The landmass of Singapore itself has grown by 40% since the 60's through reclamation. There's always been lots of rumors about how the sand was sourced from neighboring countries.

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