Martin Marietta, an American-based company and a member of the S&P 500 Index, is a leading supplier of aggregates and heavy building materials, with operations spanning 26 states, Canada, the Bahamas and the Caribbean Islands. Dedicated teams at Martin Marietta supply the resources for the roads, sidewalks and foundations on which we live.

Martin Marietta’s Magnesia Specialties business provides a full range of magnesium oxide, magnesium hydroxide and dolomitic lime products.