Copper One Reports High Copper Grades from Majuba Hill Project Underground Mapping

July 13, 2026 — Leads & Copy — Copper One Resources Corp. has reported significant copper results from its Majuba Hill Copper-Silver-Gold Project in Pershing County, Nevada. High-grade copper was found in samples collected during an underground breccia mapping program within the historic Middle Adit.

One sample, MHR-793, yielded 10.5% copper and 188 parts per million (5.5 oz/ton) silver. This sample, along with adjacent sample MHR-794, was described as oxide copper, specifically azurite, embedded within magmatic-hydrothermal intrusive breccias characterized by a coarse, spongy, and radiating tourmaline matrix.

The 2026 breccia mapping program collected eight rock samples from fifteen locations to analyze breccia textures. Previous rock samples taken in 2016 also showed copper content ranging from 0.39% to 1.6%.

David Greenway, President and CEO of Copper One, stated that the Majuba Hill project is entering an exciting phase with drilling now in progress on an initial core hole designed using ExploreTech AI. He added that the recent underground mapping has reinforced the company's geological model by confirming breccia-hosted copper mineralization and its connection to surface structures. Greenway emphasized that the combination of detailed field geology and AI-assisted exploration tools is refining drill targets and improving the precision of their exploration efforts, providing increased confidence in the current drill program as they assess the extent and continuity of the mineralized breccia system.

The 2026 Spring surface geological mapping program aimed to identify and map outcropping tourmaline breccia bodies believed to be associated with high-grade copper mineralization. The underground geological mapping within the Middle Adit confirmed the presence of these same breccia styles. The program validated the existing northeast-trending breccia system and identified a previously less-reported north-northwest-trending breccia corridor. This discovery is expected to further refine structural targets and highlight new areas with potential for high-grade copper mineralization, providing additional geological confidence for the ongoing 2026 drill program.

The press release also detailed four of the five planned drill sites for up to nine holes. Drill site 26PDH-1 is strategically positioned to drill below the high-grade rock samples found in the Middle Adit and to test the southern extent of the hydrothermal-magmatic breccias with a tourmaline matrix. Previous drill holes have intersected high-grade copper and silver-bearing hydrothermal-magmatic breccias, including MHB-2 which yielded 146 feet (44.5 meters) grading 1.41% copper and 97.6 ppm silver, and MHB-32 which returned 379.5 feet (115.7 meters) grading 0.33% copper and 16.97 ppm silver.

The Majuba Hill project is located in Nevada, which was ranked the top mining jurisdiction globally in the 2022 Fraser Institute Annual Survey of Mining Companies. The property spans approximately 9,684 acres, situated about 113 road kilometers (70 miles) southwest of Winnemucca and 251 kilometers (156 miles) northeast of Reno. It is accessible via county roads from U.S. Interstate 80. The project benefits from existing infrastructure, including road access, power, water, and a skilled workforce.

Copper One Resources Corp. is focused on identifying, acquiring, and advancing projects rich in copper, copper-silver-gold, and copper-molybdenum to meet the increasing global demand for critical metals used in electrification, AI infrastructure, data centers, renewable energy, defense, and power system modernization.

Source: Copper One Resources Corp.