Argentina, Chile revive mining treaty

Argentina and Chile have revived a mining integration treaty first signed in 1997, aimed at easing the development of projects that straddle or lie close to their shared Andean border. The renewed framework is designed to streamline cooperation between the two countries for new mining developments in the frontier region.

By reactivating this agreement, both governments seek to create clearer rules and more predictable conditions for companies planning investments in cross-border or near-border deposits. The focus is on facilitating projects that might otherwise face duplicated infrastructure and regulatory hurdles on each side of the border.

Officials involved in the initiative estimate that the revived framework could unlock more than US$20.7 billion in mining investment. This figure reflects the scale of potential projects that could advance under clearer cross-border arrangements and improved coordination between Argentine and Chilean authorities.

The treaty is also projected to contribute significantly to global copper (HG1) supply. Estimates indicate that projects enabled by the framework could add about 540,000 tonnes per year of copper (HG1) production, underscoring the potential importance of the initiative for international metals markets.

The integration framework is intended to make it easier for future mining projects near the border to access infrastructure across both countries. This could involve using facilities and services located on one side of the border to support operations on the other, rather than requiring duplicate investment in parallel systems.

The revived treaty is geared toward new or planned mining ventures, providing a structure for collaboration in areas such as permitting, logistics and technical coordination. By reducing administrative and operational barriers, the agreement aims to accelerate the timeline from project planning to potential production.

For Argentina, the initiative offers a pathway to advance large resource projects in remote border regions by leveraging Chile’s established mining infrastructure. For Chile, it reinforces its role as a key hub for copper and other minerals while broadening its integration with neighboring supply chains.

The agreement underscores both countries’ interest in strengthening their position in global mining, especially in copper. By reviving a long-standing treaty and updating its practical use, Argentina and Chile are positioning themselves to attract substantial new capital to frontier projects and to expand their contribution to global mineral output.