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- An integrated investigation of the Rio tailings, Panasqueira mine, Centre PortugalPublication . Grangeia, Carlos; Ávila, Paula Freire; Matias, Manuel; Silva, E. Ferreira daThe risks associated with mine tailings have different nature and, thus, only a multiple approach can investigate and monitor comprehensively the characteristics and evolution of mine tailings impacts on the environment. Deposition at the Rio tailings (Panasqueira Mine) lasted about ninety years. Over one million cubic metres, of complex very fine to fine material, are deposited on a mountain side overlaying the Zezere river, increasing the risk of contamination of one of the most important hydrographic basins in central Portugal. Herein, a multidisciplinary study including geophysics, geochemistry and borehole information, organized in a GIS, is used to characterize the Rio tailings. The geophysical survey comprised ERT (Electrical Resistivity Tomography) and GPR (Ground Penetrating Radar) on the mud impoundment, as well as, on the slope of the tailings. The geochemical survey consisted on collecting water and tailings samples, iron coatings, arsenopyrite stockpile material and ferruginous crust. Samples collected in boreholes, drilled specifically for this project, were also analyzed. The GIS provided imaging of the geophysical, geochemical and particle size spatial distribution, so that comparisons between the different data sets are easily done. Resistivity and GPR allowed bedrock positioning. GPR was able to give layering results within the tailings. Finally, comparison and correlation between geophysical and geochemical results are carried out and evaluated on the GIS platform.
- Soil geochemical survey in Panasqueira mine surroundings (Central Portugal) : mining, metal(loid)s and related environmental impactPublication . Candeias, Carla; Salgueiro, Ana Rita; Silva, Eduardo Ferreira da; Ávila, Paula Freire; Melo, Rita
- Mining activities in Panasqueira area : impact and threats in ecosystems and human health in rural communitiesPublication . Candeias, Carla; Silva, Eduardo Ferreira da; Ávila, Paula Freire; Coelho, Patrícia; Teixeira, João Paulo
- Modelling the impact of Panasqueira mine on the ecosystems and human health : a multidisciplinary approachPublication . Candeias, Carla; Silva, Eduardo Ferreira da; Salgueiro, Ana Rita; Ávila, Paula Freire; Coelho, P.; Teixeira, J. P.
- Caracterização de teores em cobre nos solos e sedimentos na envolvente à Mina de AljustrelPublication . Guimarães, T.; Almeida, J. A.; Brito, M. G.; Salgueiro, Rita; Silva, E.; Candeias, Carla; Ávila, Paula Freire
- Visita ao Campo Mineiro de JalesPublication . Bobos, Iuliu; Ávila, Paula Freire; Silva, Eduarda Moreira da; Durães, Nuno
- Temporal assessment of As spatial distribution in soils in the vicinity of Panasqueira mining area (Portugal)Publication . Salgueiro, Ana Rita; Ávila, Paula Freire; Candeias, Carla; Melo, Rita; Silva, Eduardo Ferreira da