Martin Marietta Magnesia Specialties

Martin Marietta Magnesia Specialties, a subsidiary of Martin Marietta, manufactures high-purity magnesium oxide, magnesium hydroxide, and dolomitic lime products at its United States-based production facilities. The company offers magnesium hydroxide in both aqueous suspension (slurry) and powder forms, serving as an effective alkaline substitute for caustic soda and lime in wastewater neutralization and pH adjustment. Its magnesium oxide product line spans four grades—light burned, hard burned, dead burned, and specialty—each varying in particle size and reactivity to suit different process requirements. Dolomitic lime products, sourced from mined dolomitic limestone, are available in granular, pebble, and midsize forms. The company's products serve 14 application areas including wastewater treatment, water treatment, power generation, pulp and paper, mining, agricultural, food grade, fuel additives, glass, rubber and plastic, refractory and steelmaking, flame retardant, electrical steel, and other industrial markets. Martin Marietta Magnesia Specialties holds ISO 9001:2015 certification and provides worldwide distribution and logistics capabilities. In water and wastewater applications specifically, their magnesium hydroxide is widely used for alkalinity supplementation, odor control in sewer collection systems, and acid neutralization in industrial effluent treatment.