MainSpring Inferred Drilling Program Completed

CASA GRANDE, AZ - Arizona Sonoran Copper Company Inc. reported the completion of its inferred drilling program on MainSpring, within the Cactus Project, Arizona. The inferred drilling program confirms a continuation of the thick enrichment blanket extending south and up dip from the Parks/Salyer deposit onto MainSpring, as well as the presence of enriched mineralization in MainSpring. With the final receipt of assays, a MainSpring mineral resource model is now being generated for its inclusion to the integrated Nuton and Cactus Preliminary Economic Assessment (PEA) expected in Q3 2024.

The completed program at 500 ft (152 m) centres between drill holes, extended mineralization over 2,500 ft x 3,000 ft (762 m x 914 m) within an interpreted horst block. The final 10 holes (17,916 ft | 5,460 m) from the now completed inferred program are reported herein. Two drills are now infill drilling at Cactus West within the primary sulphide zones, and one rig is focused on reducing drill spacings at MainSpring from inferred to indicated for use in an updated Prefeasibility Study which is scheduled to initiate later this year.

George Ogilvie, President and CEO, said, “Drilling has performed extremely well for the Company, outlining a new zone of copper mineralization and extending the enrichment blanket by another 3,000 ft (914 m) to the south of our already significant Parks/Salyer project. Most importantly the MainSpring mineralization is near surface in the South, gradually plunging with advancement to the North, until it connects into the Parks/Salyer ore deposit. Our team will explore the potential of introducing a new open pit within the property bounds around MainSpring within the PEA expected in Q3 2024; at this point, ASCU is well underway in generating the MainSpring mineral resource estimate for its inclusion. The new PEA will build upon the February 2024 PFS, integrating MainSpring as well as the primary sulphides which utilize the NutonTM technologies within the heap leach and SX/EW flow sheet.

We believe the MainSpring results will continue to demonstrate the scalability of Cactus, reinforcing the Project as a highly compelling emerging copper developer within a Tier 1 location.”