Loma Negra Cia Industria Argentina SA is a cement producer in Argentina. The Group is engaged in the production and distribution of cement, masonry cement, concrete, limestone, and aggregates, operates a railway concession to provide transportation services, and is also engaged in the industrial waste recycling business. The company operates in five segments: Cement, masonry cement, and lime; Concrete; Rail services; Aggregates; and Others. The majority of its revenue derives from Cement, masonry cement, and lime segments.