Ironstone substitutes

Both Mill Scale and Black Sand fully substitute the requirement for Ironstone, a mined raw material ingredient used in the manufacture of clinker for cement.

Mill Scale is a high iron by-product from the steel making industry. Black Sand is a slag derived from the smelting industry. Together these ironstone substitute materials have replaced more than 300,000t of mined raw material since 2003.

Environmental performance

Air quality
monitoring