Chile and Argentina Restart Mining Integration Process, Cross-Border Copper Cooperation Poised to Unlock Tens of Billions in Investment

America's Record Copper Imports Mask an 'Artificial' Shortage, Analysts Warn
Published on: Aug 28, 2026
Author: Amy Liu

Chile and Argentina are seeking to unlock billions of dollars in mining investment potential by refining their legal and regulatory frameworks. The move is intended to allow companies from both countries to share infrastructure and mineral resources across the Andes Mountains. Officials from the two nations will hold a new round of talks on Thursday under the Mining Integration and Complementarity Treaty, signed in 1997 but stalled for decades due to limited progress, until it was reactivated this July.

Key Project Advancement and High-Level Consensus

At this meeting, the two countries have approved operating regulations for three mining projects: Vicuña, NexoAndino, and Filo Sur. The Chilean government stated in a communiqué that the deposits of these projects straddle the border between Argentina’s San Juan Province and Chile’s Atacama Region, though the statement did not disclose further details. The reactivation process has been driven jointly by Chile’s conservative President José Antonio Kast and Argentina’s libertarian President Javier Milei, both of whom have made attracting private investment a policy priority since taking office in March of this year. Chile’s Mining Minister Daniel Mas said this month that the cooperation framework could help unlock over US$20.7 billion in investment and add 540,000 tonnes to annual copper production.

The Appeal of Cross-Border Infrastructure

For investors, the core appeal of the framework lies in the potential for Argentine projects near the Andean border to access Chilean ports and the infrastructure network tied to the world’s largest copper producer. Such access would effectively reduce costs, shorten transport routes, and help bring new mines into production. Joaquín Villarino, head of the Chilean Mining Council, noted that the development of binational projects creates significant opportunities for Chilean suppliers, infrastructure utilization, services to Argentine industry, and the formation of business partnerships. Chile’s Deputy Mining Minister Álvaro González told Reuters that the measures under review by the two governments have no clear implementation timetable.

Project Updates and Industry Outlook

On Friday, representatives from three projects that could benefit from this framework are scheduled to meet at a mining seminar in Santiago. These projects include McEwen Copper’s Los Azules in Argentina, Glencore’s El Pachón, and the cross-border copper project Vicuña, operated by Lundin Mining (TSX: LUN) and BHP (BHP). Analysts point out that with a number of projects under construction advancing, Argentina is on track to become one of the world’s top ten copper producers by 2030, joining Chile as a major supply hub for critical metals essential to the energy transition.

Base Metals Copper Financial Service Mining