Geologists confirmed the presence of a major copper and gold deposit at Bajo de la Alumbrera on 22 January 1968. The discovery occurred after years of geological surveys in Catamarca Province. The deposit later became one of Argentina’s most important mining projects. Its development supported local employment and infrastructure. The mine contributed significantly to national mineral exports. The discovery marked a turning point in Argentina’s modern mining history. It remains a key reference point for mining exploration in the Andes.