Martin Marietta Materials Inc is a leading supplier of aggregates and heavy building materials, with operations spanning the United States and internationally. Founded in 1939 and based in Raleigh, North Carolina, the company provides a wide range of products including crushed stone, sand, gravel, ready mixed concrete, asphalt, and various types of cement. These materials support infrastructure projects, residential and nonresidential construction, and industries like railroad, agricultural, and environmental sectors. Additionally, Martin Marietta produces chemical products for uses such as flame retardants and wastewater treatment, showcasing its diverse offerings in the building materials and chemical product markets.