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Mining tailings have a strong presence of heavy metals in their composition, and these elements may be associated with the evolution and spread of antimicrobial resistance. The objective of this work was to analyze studies that describe the relationship between bacteria recovered from sites impacted by mining tailings resulting from the collapse of the Fundão and Córrego do Feijão Mine dams and the development of antimicrobial resistance. This is an integrative literature review, using the PubMed, VHL, Science Direct, and Web of Science databases, and the descriptors "antimicrobial resistance", "heavy metal", "dam" and "Brazil" (English) and "resistência antimicrobiana", "metal pesado", "barragem" and "Brasil" (Portuguese). Six articles were selected, four referring to the Fundão dam and two to the Córrego do Feijão Mine. All works suggested that environmental contamination by heavy metals, resulting from mining waste released after the dams collapsed, favored the appearance of antimicrobial resistance genes, that is, they are related to the selective pressure exerted by heavy metals. Disasters such as these raise questions about the interface of antimicrobial resistance in environments that have heavy metals as contaminants, the knowledge of which is of great relevance since antimicrobial resistance is a serious public health problem. [ABSTRACT FROM AUTHOR]

The national economic development is associated with the ability to guarantee the permanent supply of electricity, and discussions about generating matrices are relevant today due to the extent of environmental damage. On that account, this study aims to analyze the importance of hydroelectric plants in the Brazilian scenario, according to the delimitation of hydrographic regions, and to emphasize on issues related to environmental intentions, with emphasis on the São Francisco hydrographic region, which is characterized by the dry climate. The research was based on the analysis of institutional documents, the literature review, the spatialization of data through geotechnologies and field study. The Amazon hydrographic region has a preponderance in the number of hydroelectric plants, with the greatest installed potential ones being found in the south of the country, as in the Paraná hydrographic region. In this infrastructure construction scenario works, almost the total types of dams with reservoirs, the observation of environmental damage is secondary, and attempts to circumvent the problems are carried out through remedial actions. In the São Francisco hydrographic region, the natural alteration of river courses for the formation of dams and hydroelectric plants is a surprising cause of environmental conflicts, due to changes imposed in land use and forced displacement of the needy. They also intensify the factors of environmental degradation, such as the wind risk, very common in areas with resistant soils, vulnerable to desertification. [ABSTRACT FROM AUTHOR]

Na ilha da Madeira, existem vários reservatórios de água para diferentes fins, entre eles as albufeiras das barragens de Pico da Urze e da Portela. Estas infraestruturas têm em comum a particularidade de as características das formações geológicas vulcânicas ocorrentes e os materiais de construção das barragens não garantirem a estanquidade necessária para a retenção da água, tornando imprescindível o uso de geossintéticos na impermeabilização do corpo das barragens e das suas albufeiras. Na Barragem do Pico da Urze foi utilizado um geocompósito de impermeabilização (geomembrana de PVC termoacoplada a um geotêxtil) e na Barragem da Portela foi usada uma geomembrana de PEAD. A utilização destes materiais colocou alguns desafios ao nível da conceção e construção dos seus sistemas de impermeabilização. Neste artigo, apresentam-se os principais desafios enfrentados durante as fases de projeto e de construção dos sistemas de impermeabilização, que o Laboratório Nacional de Engenharia Civil acompanhou no âmbito de assessorias técnicas prestadas aos donos de obra.