Sand is a major ingredient of mortar, plaster, concrete, and asphalt. Businesses often collect beach sand in bulk as a result hence beaches are retreating. DB has created machines, for use in bars and restaurants, that recycle empty beer bottles. You push the container through a bottle-shaped hole, then watch as a vacuum system removes silica dust and plastic labels, leaving behind pure glass sand. Each bottle produces 200 grams of powder substitute in about five seconds. DB Export Beer Bottle Sand will be distributed for roading projects, commercial and residential construction, even golf bunkers. www.geek.com/tech/machine-crushes-beer-bottles-into-sand-to-save-new-zealand-beaches-1690917/