https://vibookmark.com/News/stopping-the-sand-crisis-at-your-doorstep/ 09 June 2025 We began our journey with a simple idea: the world has plenty of sand, but little of it is clean, traceable, and mined without harming rivers. Sand taken from the sea or desert cannot be used in concrete because it carries chloride or is too fine in grain size. Fri, 20 Jun 2025 12:56:44 UTC en