July 2013

This report presents results from an investigation and review of issues regarding the Tintaya and Antapaccay mines’ impacts to water quality, water quantity, animal deaths, human health, and other resources in Peru’s Espinar Province. The goal of the report is to review Glencore Xstrata’s mines with a particular focus on community concerns and mining best practices. This report further seeks to ensure that all mining activities in the Espinar Province, including monitoring and public participation, are consistent with best international practices and protocols. Because of the relationships between the various Glencore Xstrata mines in the area and the connections between their operations and impacts, special attention is given to cumulative impacts analysis and environmental impacts analysis. The report is based on reviewing publicly available data and reports and visits to the communities and the mines (tours provided by Xstrata personnel). Glencore Xstrata’s mines in the Espinar region include the Tintaya and Antapaccay mines and the Coroccohuayco exploration project. Glencore Xstrata’s Las Bambas mine is a little more distant and is in development for anticipated production in 2014. The Tintaya copper mine is located in the Yauri district and is expected to continue mining until approximately 2018. It consists of multiple pits, multiple waste rock disposal piles, a processing plant used to process Tintaya’s ore, and multiple tailings impoundments. The Tintaya Mine site also contains a new processing plant to be used to process ore from the Antapaccay and Las Bambas mines, and presumably from the Coroccohuayco orebody if that site is developed. Wastes from the new processing plant will be disposed of in the Tintaya pit(s)…