Overview
- The Comisión Administradora of the Argentina–Chile mining treaty approved Protocolos Adicionales Específicos for Vicuña, NexoAndino and Filo Sur on Thursday and Friday to let deposits that cross the border be run as single operations.
- The protocols establish how exploration, shared infrastructure, worker movements, customs, migration and fiscal procedures will be coordinated so the same deposit is not treated as two separate mines.
- Ministers from Argentina, Chile, Bolivia and Peru signed a regional declaration on August 28 to deepen technical cooperation, promote responsible investment and align supply‑chain work across the Andes.
- The projects sit within an investment pipeline of about US$20.7–22 billion under Argentina’s RIGI incentive regime, but shipment via Chilean Pacific ports, transit rules and infrastructure financing still need project‑level agreements.
- Subnational authorities such as Mendoza are pushing to link local suppliers and small firms into the emerging Triángulo del Cobre supply chain while officials warn that roads, ports, energy and training must be built for multi‑decade project lifespans.