Acid Mine Drainage Contamination of the Ur Impoundment: Environmental GeochemistryIrina Myagkaya, Maria Gustaytis, Ivan Kirichenko, Bagai-ool Saryg-ool and Elena LazarevaE3S Web Conf., 98 (2019) 09021DOI: https://doi.org/10.1051/e3sconf/20199809021