The 1926 discovery of large limestone deposits at the San Jacinto Estancia inherited from his father led Fortabat to open a cement factory in the nearby pampas hamlet of Loma Negra (south of Olavarría); the choice of location prompted him to christen the company Loma Negra ("Black Mound").
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Alfredo Fortabat died in Buenos Aires on January 19, 1976, upon which his widow became the President and nearly sole owner of Loma Negra.
Later in the 1950s branches were opened between Olavarria and Loma Negra (17 km) and between Tcnl Miñana and Azul (30 km), making a total rail network of 902 km.
The museum was initiated by María Amalia Lacroze de Fortabat, the longtime Chairperson and chief stockholder of Loma Negra, the largest cement manufacturer in Argentina.
Casa Loma | 1989 Loma Prieta earthquake | Punta Negra | Loma Linda University | Serra Negra | Point Loma | Mano Negra | Loma Negra | Loma Linda University Medical Center | Loma | Isla Negra | Punta Negra, Uruguay | Point Loma, San Diego | Point Loma High School | Loma Prieta | Loma Linda University School of Medicine | Loma Linda, California | Loma (ethnic group) | La Musica Negra | La Loma Park | La Loma | Casa Loma Orchestra | Toña la Negra | Sierra Negra | Mira Loma High School | Mira Loma, California | Memoria negra | Loma Plata | Loma Larga Tunnel | Loma Grande District |