Southern Copper’s $1.8B Tía María reauthorisation: schedule and design notes for mine planners
Reviewed by Joe Ashwell
First reported on MINING.com
30 Second Briefing
Peru has reauthorised the mining permit for Southern Copper’s $1.8 billion Tía María project, clearing La Tapada open-pit’s first-stage operations after Minem confirmed compliance on environmental certification, ownership, and safety and health obligations, including previously incomplete waste dump design and project scheduling. The project, in Arequipa, is slated to produce 120,000 tonnes of copper per year for 20 years, with start-up targeted between late 2026 and early 2027, adding to Southern Copper’s Toquepala, Cuajone and Ilo operations. The decision lands amid a chaotic presidential run-off and roughly $7 billion of stalled copper projects linked to illegal mining.
Technical Brief
- Minem’s reauthorisation followed correction of previously incomplete waste dump design and detailed project scheduling.
- Approval explicitly covers first-stage operations at the La Tapada open-pit within the Tía María complex.
- Regulatory sign-off confirms compliance with environmental certification, ownership verification, and mine safety and health obligations.
- Tía María has faced almost 20 years of delay driven primarily by sustained community opposition in Arequipa.
- Southern Copper’s Peruvian portfolio integration links Tía María with existing Toquepala, Cuajone and Ilo processing infrastructure.
- Parent company Grupo Mexico’s listed arm, SCCO, carries a market capitalisation of about $160 billion in New York.
- SCCO’s share price has risen roughly 37% year-to-date, improving funding conditions for large-scale capex deployment.
- Around $7 billion of other Peruvian copper projects remain stalled due to illegal mining, constraining national project pipelines.
Our Take
The recent revocation of Tía María’s permit by Peru’s Ministry of Energy and Mines, covered in our 10 April piece, underlines how unusual this rapid reauthorisation is and signals that regulatory risk in Peru remains highly binary for Southern Copper.
With an estimated $7 billion in copper projects stalled by illegal mining in Peru, reactivation of a single large asset like Tía María is unlikely to shift national output on its own but may set a permitting precedent other stalled copper projects in southern Peru will watch closely.
Southern Copper appears frequently in our copper and gold coverage alongside majors such as BHP, Rio Tinto and Freeport, and its $160 billion market capitalisation and strong year‑to‑date share performance give it more balance-sheet capacity than most peers to ride out further political or social delays in Arequipa.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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