Martin Marietta Materials, Inc.MLM

Martin Marietta Materials supplies natural resource-derived building materials, including crushed stone, sand, gravel, ready-mix concrete, asphalt, and paving solutions. These products support infrastructure, commercial, and residential projects, alongside railroad, agricultural, and utility sectors. Beyond construction, the firm produces magnesia-based chemicals for industrial and environmental applications, plus dolomitic lime for steel manufacturing and soil stabilization. Established in 1939, it is based in Raleigh, NC.