Vermiculite has been used as insulation in tens of millions of homes in the U.S. alone, mostly in attics. A significant majority of vermiculite was mined from an asbestos-rich region of Montana, which has led to widespread fears of lung cancer, mesothelioma, and other life-threatening diseases. As an inspector, what should you do if you find vermiculite in a home? The situation is probably not that serious as long as the mineral is kept isolated from living areas and is not disturbed. To find out more about this interesting insulator, check out our new article on vermiculite.