Loma Negra Compañía Industrial Argentina Sociedad Anónima, together with its subsidiaries, manufactures and sells cement and its derivatives in Argentina. The company operates through Cement, Masonry Cement, and Lime; Concrete; Rail services; Aggregates; and Others segments. It offers masonry cement, aggregates, ready-mix concrete, concrete, and lime to wholesale distributors, concrete producers, industrial customers, and others. The company also provides rail transportation services; and treats and recycles industrial waste for use as fuel and raw material.