Gypsum Board: Are Our Walls Leaching Toxins? | BuildingGreen
Mar 14, 2012· While about half of gypsum today is synthetic gypsum (and that number is rising) as plants are built next to power plants instead of gypsum mines, I''m sure if you look around it wont take long to find a plant close to you that offers natural mined gypsum instead of synthetic gypsum. Be aware, though, that natural gypsum comes with a similar set ...