[Allamann]

Sand is not sand. Sand from the dessert is usually very smooth due to environmental factors and therefore not suitable for construction or land development because it will not be as solid tighten together as more rough sand. That's the paradox behind the fact that states surrounded by dessert in the middle east import sand to be able to build their scyscrapers. And that's also the reason why sand is a limited resource and for people stealing sand in the pacific area.

[zeristor]

If they’re just doing bulk infill then I assume there’s no reason to need the sharp sand, over the rounded sand from deserts.