Mining Stock Daily Introduction to Gunnison Copper as it Inches Closer to First Copper Production in Arizona
Aug 21, 2025
Craig Hallworth, Senior VP and CFO of Gunnison Copper, discusses the company's imminent launch of domestic copper production from its Johnson Camp in Arizona. He highlights the importance of reshoring the U.S. copper supply, especially amid rising demand. The conversation dives into groundbreaking technological advancements, like Rio Tinto's Newton method, aimed at improving copper recovery. Hallworth also touches on strategic partnerships and market trends, emphasizing the project’s role in transforming the domestic copper landscape.
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Newton Unlocks Sulfide Heap Leaching
- Gunnison is restarting Johnson Camp using Rio Tinto's Newton to heap leach sulfide ore at site with SXEW finishing.
- This could unlock processing for many U.S. sulfide resources and reduce reliance on overseas smelting.
Rapid Buildout At Johnson Camp
- Gunnison spent about $100 million building a new leach pad and facilities over the past year to bring the plant online.
- The oxide run-of-mine circuit is leaching and plating solution now and the first cathode is expected for sale by September.
Monitor Disclosures For Newton Proof
- Watch Gunnison's disclosures and financials to monitor Newton's real-world performance as the first full-scale demonstration.
- Expect a Newton-produced copper announcement before the end of this calendar year to validate lab recoveries.