Martin Marietta Materials Inc produces aggregates for construction, which includes nonresidential, infrastructure, railroad ballast, residential, agricultural, and chemical grade stone which is used for environmental applications. The Martin Marietta Materials Company operates in four business segments namely the Southeast Group, Mideast Group, and West Group, and the Specialty Products segment. The aggregates business of the company includes ready mixed concrete, asphalt products, and road paving materials. The company acquired the assets of asphalt, aggregates, and ready mixed concrete located in Western San Antonio, Texas. The company also exchanged certain assets with Lafarge North America Inc and it acquired a ready mixed in the Denver, Colorado.