This study analyzes and determines the intake of lead in the blood of children in Cerro de Pasco produced by mining contamination in an evident breach of social responsibility. It is qualitative research, oriented by the interpretative paradigm, where the phenomenological and hermeneutic designs were used to explore the experiences of the participants. The two techniques applied were indepth interviews with ten people, members of a heterogeneous group, all of them with extensive knowledge and experience with mining contamination and its aftermath with toxic gases produced by the extractive activities of companies such as Cooper Corporation, Centromín Perú, and Volcan, as well as the documentary analysis technique that allowed contrasting the qualitative results. The study meets scientific criteria, such as credibility, transferability, dependability and confirmability. It was concluded that lead contamination in the blood of children is the result of overexposure to mining tailings and that, over a hundred years on average, they have acted without complying with an authentic social responsibility. The children who live near these tailings are the ones who have been most contaminated and continue to be contaminated with lead in their bodies and the companies have not complied with their social responsibility. Volcan, the current mining company, has been fined for environmental infractions due to a lack of social responsibility to preserve the life and health of the Cerro de Pasco population and the environment as a whole.

mining pollution, lead contamination, children contaminated with lead, social responsibility