granite counter tops: GRANITE COUNTER TOPs AND RADON - 01/21/14 10:22 PM
Recent media attention has focused on granite countertops and whether they can increase your indoor radon levels. While testing your home is always a good idea, a few clarifications are in order.   
  
FACT - All natural products, especially stone, minerals, and sand, contain trace amounts of some radioactive elements called NORMs (Naturally Occurring Radioactive Mineral) that can produce measurable amounts of radiation and sometimes radon gas.
  
This includes all concrete products, clay bricks, most non-plastic plates and dishes, coal and the flyash produced in coal-fired power plants, natural gas (contains radon), phosphate fertilizers used in your garden (ALL contain … (0 comments)