Copperstone signals a new chapter for U.S. Gold development

In an industry where capital discipline has become just as important as resource size, Minera Alamos has informed that it has delivered a Pre-Feasibility Study that deserves attention far beyond the junior mining sector.The newly released PFS for the Copperstone Gold Project in Arizona outlines a development pathway that combines relatively low upfront capital requirements with economics that are increasingly difficult to ignore in today’s gold price environment. The study presents an underground operation capable of producing approximately 291,000 ounces of gold over an initial 6.3-year mine life, with average annual production exceeding 46,000 ounces and peak annual production approaching 54,000 ounces. Most notably, first gold production is targeted for mid-2027.

Strong economics in a strong gold market

At a base-case gold price of US$3,500 per ounce, Copperstone generates an after-tax NPV5% of US$374 million, an after-tax IRR of 108%, and a payback period of just 1.2 years. At current spot gold assumptions of US$4,500 per ounce, those numbers become even more compelling, with NPV increasing to US$537 million and IRR rising to 154%.
For a project requiring initial capital of approximately US$58 million, the resulting value-to-capital ratio stands out in a market increasingly focused on execution certainty and return on invested capital rather than simply resource scale.

More than a restart story

Copperstone is not a greenfield development. Located in Arizona, the project benefits from existing infrastructure, active permits, historical mining operations, established road access, power distribution, water rights, tailings facilities and portions of an existing processing plant. This infrastructure advantage significantly reduces development risk compared with many projects competing for capital today.
The study also highlights substantial upside beyond the current mine plan. Measured and Indicated Resources now stand at 630,000 ounces of gold, while Proven and Probable Reserves total 303,000 ounces. Notably, approximately half of the Measured and Indicated Resource inventory has not yet been converted into reserves, creating a clear pathway for future mine life extensions and production growth.

Construction decision already made

What differentiates this announcement from many preliminary economic studies is that the Board has already approved a formal construction decision.

According to Darren Koningen, President and COO: „The Copperstone PFS results show a high-return, low capital underground gold mining project with first gold production anticipated in mid-2027 and which will more than double our Company’s annual gold production once ramped up. Our Board has made a formal investment decision for construction of the Copperstone project, with full-scale engineering, procurement and construction activities commencing in June.”

With major equipment already arriving on site and contractor mobilization expected in the coming months, Copperstone has moved beyond concept and into execution mode.

Why the industry should pay attention

The mining industry continues to search for projects capable of delivering rapid returns, manageable capital intensity and production growth without requiring multi-billion-dollar investments. Copperstone appears to check many of those boxes.

At a time when investors increasingly reward operational simplicity, permitting certainty and fast cash-flow generation, Arizona may soon see the emergence of one of North America’s most closely watched new gold producers.

The real story may not be that Copperstone is returning to production.

The real story is that it could become a model for how future mid-tier gold mines are developed: smaller, faster, capital-efficient and designed to generate meaningful returns in a world where quality ounces matter more than ever.