The origins of EDM date back to 1966 with the creation of SMS - Sociedade Mineira de Santiago (CUF Group), which discovered the Gavião deposit and, later, in 1977, participated in the discovery of the world-class Neves-Corvo copper and tin deposits. In 1979, SMS was transformed into EMMA – Empresa Mineira e Metalúrgica do Alentejo, EP which, in 1982, by amendment of its charter, became EDMA – Empresa de Desenvolvimento Mineiro do Alentejo, EP, operating predominantly in the subsector of…