Monitoring and PH Analysis of Tailings from the Effluents of the Cerro De Pasco Mining Company in the Years 2017-2021Leandro Crisostomo, Frank Borja, Fiorela Aduviri and Steve CamargoE3S Web Conf., 422 (2023) 04002DOI: https://doi.org/10.1051/e3sconf/202342204002