Martin Marietta Materials, Inc., a natural resource-based building materials company, supplies aggregates and heavy building materials to the construction industry in the United States and internationally. The company offers crushed stone, sand, and gravel products; ready mixed concrete and asphalt; paving products and services; Portland and specialty cement for use in the infrastructure projects, and nonresidential and residential construction markets, as well as in the railroad, agricultural, utility, and environmental industries. It also manufactures and markets magnesia-based chemical products for the industrial, agricultural, and environmental applications; and dolomitic lime primarily for customers in the steel and mining industries, as well as provides road paving construction services. The company's chemical products are used in flame retardants, wastewater treatment, pulp and paper production, and other environmental applications. Martin Marietta Materials, Inc. was founded in 1993 and is headquartered in Raleigh, North Carolina.