What Southern Copper’s Tía María Is and Where It SitsTía María is a copper project in the Arequipa region of southern Peru, centred on the La Tapada open-pit deposit. The US$1.25 Billion FinancingIn late June 2026, Southern Copper raised US$1.25 billion, mainly to develop Tía María. Frequently Asked QuestionsWhat is the Tía María project? On 1 April 2026 Peru declared Tía María a project of national interest, including the reservation of 2,000 hectares and stronger state support. Connected Coverage Peru: Mining & Business More Peru coverage from The Rio TimesSources: SNMPE, Southern Copper, MINEM.