Martin Marietta Materials, Inc. engages in the production and sale of aggregates for the construction industry in the United States, Canada, the Bahamas, and the Caribbean Islands. It operates in two segments, Aggregates and Specialty Products. The Aggregates segment mines, processes, and sells granite, limestone, sand, gravel, and other aggregate products for use in all sectors of the public infrastructure, commercial and residential construction industries, and miscellaneous uses, such as agriculture, railroad ballast, and chemical uses. It also involves in the asphalt, ready mixed concrete, and road paving operations. The Specialty Products segment manufactures and markets magnesia-based chemical products for industrial, agricultural, and environmental applications; and dolomitic lime for use primarily in the steel industry. Its products have various uses, including flame retardants, wastewater treatment, pulp and paper production, and other environmental applications. The company also develops structural composite products. Martin Marietta Materials was founded in 1993 and is headquartered in Raleigh, North Carolina.