1. Carvalho J, Diamantino C, Rosa C, Carvalho E (2016) Potential recovery of mineral resources from mining tailing of abandoned mines in Portugal. In: Proceedings of the 3rd international symposium on enhanced landfill mining, Lisbon, Portugal, 8–10, pp 501–516
2. Martins L P (2012) Mineral resources of Portugal. Direcção Geral de Energia e Geologia. DGEG, Lisbon, pp 1–74
3. EDM - Empresa de Desenvolvimento Mineiro, DGEG (2011) The legacy of abandoned mines: the context and the action in Portugal. EDM
4. Sanchez España J (2008) Acid mine drainage in the Iberian Pyrite Belt : an overview with special emphasis on generation mechanisms aqueous composition and associated mineral phases. Rev Soc Eespañ Mineralog 10:34–43
5. Žibret G, Lemiere B, Mendez AM, Cormio C, Sinnett D, Cleall P, Szabo K, Carvalho T (2020) National mineral waste databases as an information source for assessing material recovery potential from mine waste, tailings and metallurgical waste. Minerals 10:1–20