What Gunnison Copper does

Gunnison Copper (TSX: GCU; OTCQB: GCUMF; FSE: 3XS0), formerly Excelsior Mining Corp. until its November 2024 rebrand, is a pure-play domestic U.S. copper developer and producer headquartered in Phoenix, Arizona, with operations concentrated in the Cochise Mining District of southeastern Arizona. The company's asset base comprises the Johnson Camp Mine (JCM), in production since September 2025 with up to 25 million lbs per year of finished copper cathode capacity using traditional heap leach plus Nuton bioleaching, and the flagship Gunnison Copper Project, a planned conventional open-pit heap leach and SX/EW operation designed to produce 174 million lbs per year of 99.999% pure LME Grade A copper cathode over a 21-year mine life. The company also holds the Strong & Harris satellite deposit (76.1M tons inferred at 0.49% Cu) and licenses Lunasonde's proprietary Airborne Georadiotomography (aGRT) technology for subsurface exploration.

Copper is produced on-site at Arizona facilities using in-situ recovery, conventional heap leach, SX/EW processing, and Nuton's proprietary sulfide bioleaching technology deployed under a strategic partnership with Rio Tinto's Nuton venture, which has invested $100 million at Johnson Camp. The Nuton process achieves up to 85% recovery on primary sulfide materials previously considered uneconomical while using 80% less water and 60% less carbon than traditional sulfide concentration. Cash costs of $1.70/lb position the Gunnison Project in the lower half of the global cost curve, and the March 2026 PEA estimates a post-tax NPV8 of approximately $2.0 billion at a base case $4.60/lb copper price with a 22.5% IRR and 3.9-year payback.

The revenue model is direct-to-customer commodity cathode sales into U.S. domestic supply chains at prevailing LME-linked prices, with no disclosed long-term take-or-pay contracts beyond the AWS framework. Q1 2026 revenue was $20.1 million on 2.1 million lbs produced, with $1.7 million of net profit marking the first profitable quarter in company history. The company sells to four target verticals — U.S. energy, defense (via Defense Industrial Base Consortium membership), data center operators (notably AWS under a two-year strategic collaboration), and manufacturing — and is pursuing non-dilutive funding channels including a $13.9 million DOE Section 48C tax credit, Arizona Qualified Facility Tax Credits, and a $23 million Triple Flag royalty arrangement. GTM is sales-led enterprise targeting strategic U.S. supply chains, with investor relations supported through conference participation (PDAC, VRIC, 121 Mining Investment, Red Cloud), press distribution, and direct institutional engagement.

Name

Gunnison Copper

Legal name

Gunnison Mining Corp.

Website

https://gunnisoncopper.com

Company type

Public

Founded year

2010

Operating status

Operating

Headcount range

51–100 employees

Short description

Gunnison Copper is a domestic U.S. copper producer operating open-pit mines in Arizona's Cochise Mining District, producing 99.999% pure copper cathode for U.S. energy, defense, data center, and manufacturing supply chains via heap leach, SX/EW, and Nuton bioleaching.

Ownership category

akta.pro rank

Product category

Copper Mining and Production

NAICS

Copper, Nickel, Lead, and Zinc Mining (212230), Nonferrous Metal (except Aluminum) Smelting and Refining (331410)

SIC

Metal Mining (1000), Primary Smelting & Refining Of Nonferrous Metals (3330)

akta.pro primary industry

Copper Ore Mining (Open-Pit & Underground) (IMAKADAB)

akta.pro secondary industry

Copper Hydrometallurgy (Leaching, SX/EW) (IMAKADAD)

Keywords

• Copper cathode production
• Copper mining operations
• Heap leach processing
• Bioleaching technology
• Domestic copper supply

Headquarters

HQ city

Phoenix

HQ country

United States

HQ region

North America

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Infrastructure, Technology or R&D

Revenue model

1. Copper Cathode Sales: Gunnison Copper generates revenue through the production and sale of finished copper cathode produced at its Johnson Camp Mine and future production from the Gunnison Copper Project. Copper is sold directly to U.S. domestic customers in energy, defense, data center, and manufacturing supply chains. Q1 2026 revenue was $20.1 million from 2.1 million lbs of copper cathode produced.

Pricing tiers

Go-to-market motion2 records

Distribution channels1 record

Marketing channels4 records

Core offering

Gunnison Copper develops and operates open-pit copper mines in Southern Arizona's Cochise Mining District, producing 99.999% pure LME Grade A copper cathode via conventional heap leach and SX/EW (Solvent Extraction/Electrowinning) processing, augmented by Rio Tinto's Nuton bioleaching technology for sulfide ores. The company sells finished copper cathode directly to U.S. defense, energy, data center, and manufacturing supply chains from its Johnson Camp Mine (in production) and flagship Gunnison Copper Project (in development).

Product overview

Gunnison Copper is a multi-asset copper developer and producer operating in Arizona's Cochise Mining District. The company's product portfolio consists of three core mining operations: the Gunnison Copper Project (flagship open-pit heap leach operation producing 174M lbs/year), the Johnson Camp Mine (in production using traditional heap leaching plus Nuton bioleaching for sulfide ores), and the Strong & Harris satellite deposit. The company also offers processed copper cathode products (99.999% pure) via SX/EW technology, with Nuton bioleaching enabling extraction from previously uneconomical sulfide ores.

Differentiator

Problem solved

Functional benefit

Products and services

• Gunnison Copper Project Flagship open-pit heap leach and SX/EW copper project in Cochise County, Arizona, designed to produce 99.999% pure LME Grade A copper cathode on-site with a 21-year mine life and average annual production of 174 million lbs (87 thousand tons) over the first 15 years.
• Johnson Camp Mine (JCM) Operating open-pit copper mine in Cochise County, Arizona utilizing traditional heap leaching and Nuton bioleaching technology for sulfide copper extraction, with production capacity of up to 25 million lbs of finished copper cathode annually. Targets approximately 30,000 tonnes of refined copper production over a four-year Nuton deployment period.
• Strong & Harris Satellite Deposit High-grade copper-zinc-silver deposit located approximately 1.9 miles from Gunnison processing facilities, included in the mine plan with an inferred resource of 76.1 million tons grading 0.49% total copper.
• Copper Cathode (99.999% Pure LME Grade A) Finished 99.999% pure LME Grade A copper cathode produced on-site through conventional heap leach and SX/EW processing, plus Nuton bioleaching of sulfide ores. Sold to U.S. defense, energy, data center, and manufacturing customers. Q1 2026 production was 2.1 million lbs yielding $20.1 million revenue.

Quantifiable outcome

• 80% less water consumption compared to traditional sulfide mining
• +7 more outcomes

Named customers2 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Six partnerships are on record, tiered core, flagship and supporting.

• Arizona Commerce AuthoritycoreStrategic or Co-development Partner · 27 May 2026Partnership with Arizona state government and Arizona Commerce Authority under the Qualified Facility Tax Credit (QFTC) Program. Provides non-dilutive refundable state income tax credits tied to copper production and development activities in Cochise County, Arizona. Designed to support significant capital investment and high-quality job creation.
• State of ArizonacoreStrategic or Co-development Partner · 27 May 2026Strategic collaboration with Arizona state government focusing on environmental protection, community engagement, and streamlining regulatory processes while attracting investment to the region for sustainable copper resource development.
• Defense Industrial Base Consortium (DIBC)coreStrategic or Co-development Partner · 16 April 2026Membership in the U.S. Department of War-sponsored Defense Industrial Base Consortium focused on strengthening domestic defense supply chains for critical minerals. Provides access to potential non-dilutive funding, strategic partnerships, and programs to accelerate U.S.-based copper production.
• Amazon Web Services (AWS)coreStrategic or Co-development Partner · 15 January 2026Two-year strategic collaboration where AWS purchases low-carbon copper produced via Nuton bioleaching at Johnson Camp Mine for use in U.S. data centers. AWS also provides cloud-based data and analytics to optimize Nuton's proprietary technology. Johnson Camp targets approximately 30,000 tonnes of refined copper production over a four-year deployment period.
• Nuton LLC (Rio Tinto Venture)flagshipStrategic or Co-development Partner · 4 December 2025Strategic partnership with Rio Tinto's Nuton venture for deployment of proprietary bioleaching technology at the Johnson Camp Mine. Nuton has invested $100 million in technology deployment at the site. The technology enables extraction of copper from low-grade primary sulfide ores previously considered uneconomical, with recovery rates up to 85%. Following successful Stage 2 testing, Nuton will have right to form a joint venture holding initial 49% interest.
• Lunasonde Inc.supportingTechnology or Integration · 23 September 2025Collaboration framework agreement for deployment of proprietary Airborne Georadiotomography (aGRT) technology for initial high-resolution subsurface survey in Arizona's Cochise Mining District. The technology aims to identify subsurface anomalies hosting critical minerals, potentially reducing exploration drilling costs.

Scale indicators13 records

Recent moves6 records

Expansion highlights7 records

Emerging players

• NGEx Minerals: Copper-gold developer with South American projects (Los Helados, Lunahuasi). Comparable as a copper-focused junior developer, though geographically focused on South America rather than the U.S. Southwest.
• Solaris Resources: Copper-focused junior developing the Warintza project in Ecuador. Comparable as a copper development-stage peer targeting energy-transition demand, though at a different geography and stage.
• Kinterra Copper: Private North-America-focused copper company backed by Kinterra Capital, with a stated focus on acquiring and developing domestic copper assets. Compares to Gunnison as a peer U.S./North-America copper platform but with a different consolidation-oriented strategy.

Direct peers

• Taseko Mines: Copper-focused mid-tier miner developing the Florence Copper in-situ recovery project in Arizona — the same state and broadly the same ISR/heap-leach copper cathode production model as Gunnison. Most direct geographic and process peer.
• Arizona Sonoran Copper: Arizona-focused copper developer advancing the Cactus Mine Project in Arizona via heap leach SX/EW to copper cathode. Same state, same end-product (LME-grade copper cathode), and same U.S. domestic supply narrative as Gunnison.
• Hudbay Minerals: Mid-tier copper miner developing the Copper World project in Arizona. Multiple Gunnison senior leaders (CEO Hallworth, SVP Bingham) came directly from Hudbay's Arizona unit, and the company represents Gunnison's closest peer in scale, geography, and project stage.
• Capstone Copper: Pure-play copper producer with operations across the Americas (Pinto Valley in Arizona, Mantos Blancos in Chile, Mantoverde). Closely comparable in copper-focused mid-cap positioning and SX-EW cathode exposure.

Broad incumbents

• Freeport-McMoRan: Largest U.S. copper producer and the dominant domestic incumbent. Comparable end-product (copper cathode/concentrate) and end-markets, but materially larger scale, broader geographic footprint, and integrated smelting/refining.
• Southern Copper: One of the world's largest copper miners with integrated mining and smelting operations in Peru and Mexico. Overlaps on copper end-markets but is a global incumbent, not a domestic U.S. focused peer.
• Rio Tinto (Nuton parent): Global mining major and parent of Nuton LLC, Gunnison's flagship technology partner. Comparable copper mining activity globally and the controlling party for the Nuton bioleaching IP that underpins Gunnison's Johnson Camp differentiation.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• Xx.com/copper_gunnison

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Funding overview

Funding rounds9 records

Investors2 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Gunnison Copper