CEO.CA's Inside the Boardroom: Gunnison Copper Is Now Producing 100% American Copper, Says Market Hasn't Caught Up Yet

Rhea-AI Summary

Gunnison Copper Corp. (OTCQB: GCUMF) has achieved a significant milestone by commencing copper cathode production at the Johnson Camp Mine in Arizona, developed in collaboration with Nuton LLC, a Rio Tinto venture. This development establishes Gunnison as America's newest copper producer.

CEO Craig Hallworth highlighted the company's compelling valuation metrics in an interview with CEO.CA's 'Inside the Boardroom' series. While Arizona copper peers trade at 0.3-0.4x price-to-net asset value, Gunnison trades at just 0.1x, despite having both active production and a development project with a $1.3 billion NPV.

Positive

• None.

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• PEA includes speculative inferred mineral resources with no certainty of economic realization

Disseminated on behalf of Gunnison Copper Corp.

Toronto, Ontario--(Newsfile Corp. - September 9, 2025) - CEO.CA ("CEO.CA"), the leading investor social network in junior resource and venture stocks, shares exclusive updates with CEOs of junior mining explorers.

Founded in 2012, CEO.CA, a wholly owned subsidiary of EarthLabs, Inc., is one of the most popular free financial websites and apps in Canada and for investors globally - with industry leading audience engagement and mobile functionality. Millions of people visit CEO.CA each year to connect with investors from around the world, share knowledge and view impactful stories about stocks, commodities, and emerging companies.

Meet the Executive Shaping the Mining Landscape

'Inside the Boardroom' is more than just an interview series - it's a chance to gain firsthand knowledge from industry leaders, understanding their vision, challenges, and strategy.

We spoke with Craig Hallworth of Gunnison Copper Corp. (TSX: GCU) (OTCQB: GCUMF) (FSE: 3XS0) following their major milestone of starting copper cathode production at the Johnson Camp Mine in Arizona. Built in partnership with Nuton LLC (a Rio Tinto venture), this achievement makes Gunnison America's newest copper producer.

In this interview, Hallworth also breaks down a compelling valuation story - while Arizona copper peers trade at 0.3-0.4x price-to-net asset value, Gunnison trades at just 0.1x despite having both production and a $1.3 billion NPV development project underway as well.

The PEA is preliminary in nature, it includes inferred mineral resources that are considered too speculative geologically to have economic considerations applied to them that would enable them to be categorized as mineral reserves, and there is no certainty that the PEA will be realized.

#GunnisonCopper #Copper #RioTinto #JuniorMining

Gunnison Copper Corp.
(TSX: GCU) (OTCQB: GCUMF) (FSE: 3XS0)

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ABOUT GUNNISON COPPER

Gunnison Copper Corp. is a multi-asset pure-play copper developer and producer that controls the Cochise Mining District (the district), containing 12 known deposits within an 8 km economic radius, in the Southern Arizona Copper Belt.

Its flagship asset, the Gunnison Copper Project, has a Measured and Indicated Mineral Resource containing over 831.6 million tons with a total copper grade of 0.31% (Measured Mineral Resource of 191.3 million tons at 0.37% and Indicated Mineral Resource of 640.2 million tons at 0.29%), and a preliminary economic assessment ("PEA") yielding robust economics including an NPV8% of $1.3 Billion, IRR of 20.9%, and payback period of 4.1 years. It is being developed as a conventional operation with open pit mining, heap leach, and SX/EW refinery to produce finished copper cathode on-site with direct rail link.

The PEA is preliminary in nature and includes Inferred Mineral Resources that are considered too speculative geologically to have the economic considerations applied to them that would enable them to be categorized as mineral reserves. There is no certainty that the conclusions reached in the PEA will be realized. Mineral Resources that are not Mineral Reserves do not have demonstrated economic viability.

In addition, Gunnison's Johnson Camp Asset, which is now in production, is fully funded by Nuton LLC, a Rio Tinto Venture, with a production capacity of up to 25 million lbs of finished copper cathode annually.

Other significant deposits controlled by Gunnison in the district, with potential to be economic satellite feeder deposits for Gunnison Project infrastructure, include Strong and Harris, South Star, and eight other deposits.

For additional information on the Gunnison Project, including the PEA and mineral resource estimate, please refer to the Company's technical report entitled "Gunnison Project NI 43-101 Technical Report Preliminary Economic Assessment" dated effective November 1, 2024 and available on SEDAR+ at www.sedarplus.ca.

Dr. Stephen Twyerould, Fellow of AUSIMM, President and CEO of the Company is a Qualified Person as defined by NI 43-101. Dr. Twyerould has reviewed and is responsible for the technical information contained in this news release.

For more information on Gunnison, please visit our website at www.GunnisonCopper.com.

This release contains forward-looking information and forward-looking statements. Please refer to https://www.gunnisoncopper.com/disclaimer for additional information.

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/265737

FAQ

What major milestone did Gunnison Copper (GCUMF) achieve in September 2025?

Gunnison Copper began copper cathode production at the Johnson Camp Mine in Arizona, becoming America's newest copper producer.

Who is Gunnison Copper's development partner for the Johnson Camp Mine?

Gunnison Copper developed the Johnson Camp Mine in partnership with Nuton LLC, a Rio Tinto venture.

How does Gunnison Copper's valuation compare to its Arizona copper peers?

Gunnison trades at 0.1x price-to-net asset value, significantly lower than Arizona copper peers who trade at 0.3-0.4x.

What is the NPV of Gunnison Copper's development project?

Gunnison Copper's development project has a $1.3 billion NPV, though this is based on a preliminary economic assessment (PEA).