Martin Marietta Materials Incorporated supplies aggregates and building materials to the construction industry. Offerings include crushed stone, sand, and gravel products, ready-mixed concrete and asphalt, other paving products and services, and Portland and specialty cement. It products are used in infrastructure projects, nonresidential and residential construction, as well as in the railroad, agricultural, utility, and environmental industries.The company also produces magnesia-based chemicals that are used in industrial, agricultural, and environmental applications. Martin Marietta Materials was founded in 1939 and is headquartered in Raleigh, NC.