Martin Marietta Materials, Inc. expands upon its core aggregates business by supplying a comprehensive range of heavy building materials, including cement, ready-mixed concrete, and asphalt. The company operates through two primary segments: Building Materials, which encompasses its aggregates and downstream products, and Magnesia Specialties, which produces magnesium oxide, magnesium hydroxide, and dolomitic lime products. Aggregates serve as the company's primary cash engine, generating the vast majority of its revenue and gross profit. Martin Marietta's geographic footprint spans 28 states, Canada, and the Bahamas, supported by a robust logistics network of rail, truck, and barge routes that connect its reserves to major demand centers. The company's strategic focus on large-scale public infrastructure projects provides a steady demand base, while its high-margin magnesia business offers counter-cyclical diversification.
