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Martin Marietta, founded in 1993, is an American-based company and a global leader in the manufacturing and supply of materials for infrastructure projects. It supplies aggregates, cement and ready-mixed concrete to industries including construction, energy and transportation. Martin Marietta is also a leading producer of magnesium-based chemical products as well as dolomitic lime and limestone for industrial purposes. The company operates more than 700 facilities across 43 states in the US with over 13,000 employees worldwide. Martin Marietta has been recognized nationally for its commitment to safety, innovation and sustainability initiatives. In 2018 it was named one of the World's Most Ethical Companies by Ethisphere Magazine for the seventh year in a row. The success of Martin Marietta can be attributed to its strong core values which focus on providing quality products through strong customer relationships and support for employee development opportunities that continually drive growth within their organization.