Arizona Sonoran Copper Company Inc. reported that drilling at MainSpring on its 100%-owned Cactus Project, Arizona, confirms near surface mineralization up-dip from the Parks/Salyer deposit. A total of 17,650 ft (5,380 m) of drilling or 16 holes are reported herein, with 10 holes pending. The 2024 MainSpring inferred drill program (500 ft | 152 m drill spacing) is now complete and drilling continues to define indicated drill spacings (250 ft | 76 m drill spacing) with 3 drill rigs.

Drilling at MainSpring has (1) extended the High Grade Mine Trend at Parks/Salyer by 650 ft (198 m) to the southwest, and (2) traces lower grade mineralization another 2,500 ft (762 m) south, to within 140 ft (42 m) of surface. Drilling on the MainSpring Property illustrates a continuation of the porphyry system that hosts the Cactus Project deposits. The lower grade and near surface MainSpring mineralization is currently being drill tested as a potential starter open pit within a pending Preliminary Economic Assessment ("PEA?), which will be inclusive of a maiden MainSpring inferred resource and the application of the Nuton technologies to the primary sulphides using the same PFS assumptions, as announced on FEB.

21, 2024. The PEA is expected in the summer 2024 with M3 Engineering as lead consultant. Highlights: The MainSpring zone is the southern extension of Parks/Salyer, as it daylights towards surface to within 140 ft (42 m) of surface.

MainSpring is drilled over an area of at least 2,500 ft x 3,000 ft (762 m x 915 m), up-dip of Parks/Salyer. ECM-198: Extends Parks/Salyer High Grade Mine Trend by 650 ft (198 m) to the southwest. 882 ft (269 m) @ 0.44% CuT of continuous mineralization.

Incl 83 ft (25 m) @ 1.41% CuT, 1.30% Cu TSol, 0.023% Mo (enriched). ECM-209: 256 ft (78 m) @ 0.51% CuT, 0.44% Cu TSol, 0.003% Mo (oxide). Incl 98 ft (30 m) @ 0.95% CuT, 0.87% Cu TSol, 0.004% Mo.

ECM-197: 367 ft (112 m) @ 0.31% CuT, 0.26% Cu TSol, 0.002% Mo (oxide). 125 ft (38m) @ 0.56% CuT, 0.47% Cu TSol, 0.003% Mo (enriched). Of the 59 completed drill holes, 26 (35,529 ft | 10,828.3 m) were drilled in 2024, and 33 (35,718.9 ft | 10,887.1 m) were previously drilled by ASCU or the former option holder.

The inferred drilling at MainSpring is defining a mineralized zone at least 2,500 ft by 3,000 ft (762 m x 915 m) that trends NW toward and is contiguous with the Parks/Salyer deposit. Drilling to date shows oxide and enriched mineralization as shallow as 140 feet (42 m) from the surface in the south, and to 450 ft (137 m) on the northern end with enriched and primary mineralization extending as deep as 2,250 ft (686 m) in hole ECM-198. MainSpring is the southern extension of the Parks/Salyer horst block, at the southwestern end of the Cactus mine trend.

Copper mineralization at MainSpring is hosted within brecciated granite and monzonite porphyry as are the Cactus West, Cactus East and Parks/Salyer deposits and the NE Extension target. Mineral Resources at the Cactus project are a combination of leachable and primary mineralogies. The Cactus West deposit and Parks/Salyer deposit-MainSpring area are preserved as uplifted horst blocks, bounded by normal faults to the east and west that juxtapose Gila Conglomerate against adjacent upper plate mineralization.

The Parks/Salyer deposit, comprising an indicated mineral resource of 144M tons @ 1.01% copper and an inferred mineral resource of 48M tons @ 0.97% copper, continues onto the MainSpring property to the south. The MainSpring mineralization, containing oxide, enriched and primary copper mineralization, thickens and increases in tenor to the north as it approaches the high-grade Parks/Salyer deposit. Drilling results at Parks/Salyer and MainSpring indicate that MainSpring could be the distal low-pyrite shell of the high-grade ore-shell at Parks/Salyer.

Also intercepted to the very south of the MainSpring drilling is a late-stage quartz monzonite porphyry that is unmineralized but that contains slightly elevated primary copper grades at its margins. Drill hole ECM-198 (FIGURE 1 [4]) intersected thick primary mineralization and extends Parks/Salyer?s high-grade mine trend onto the north end of MainSpring and demonstrates that the zone between MainSpring and Parks/Salyer is an analogue for the moderately-graded pyrite-shell. The latest inferred drilling at MainSpring has focused on filling in the area between the deeper Parks/Salyer mineralization and the shallow MainSpring mineralization.