The MEIA includes changes in the components in Antapaccay, such as the modification of the mining plan of the northern and southern pits and dumping area expansions. The plan includes a 15.5- year mine life. Also, the plan proposed the reactivation of the pits located in the northern zone of Tintaya, where copper oxides and copper sulphides minerals will be extracted through conventional open pits.

The request for the approval of the MEIA was submitted in April 2018. According to the Ministry of Energy and Mines, the investment for Coroccohuayco integration is planned at $590 million. The integrated project contemplates a life cycle of approximately 34 years. It is divided into three stages: the construction of Coroccohuayco and the Antapaccay- Tintaya operation (14 months); a subsequent operation in both areas (22 years); a closing stage (five years); and a conceptual post-closing stage (five years).

Minera Antapaccay’s activities cover two areas, the Antapaccay (development area) and Tintaya (enrichment zone, including tailings disposal), which are called Antapaccay-Expansion Tintaya.