Giant Mining’s Majuba Hill Copper Project Hits Record Depth: A Catalyst for Nevada’s Next Mining Boom?

The discovery of visible native copper at unprecedented depths in Giant Mining’s Majuba Hill Copper-Silver-Gold Project has positioned the Nevada-based project as a potential game-changer for the company—and for U.S. critical mineral security. The MHB-34 drill hole, which reached 1,963 feet (598.3 meters), intersected high-grade copper mineralization far below historical workings, while assays from the nearby MHB-33 hole, released in May, already hinted at a transformative resource. Together, these results could redefine Majuba Hill’s potential as a world-class porphyry deposit, with implications for investors and the clean energy transition.

The Geological Breakthrough: Depth and Mineralization

The MHB-34 drill, part of Giant’s 2025 diamond core program, uncovered visible native copper at depths exceeding 1,499 feet (456.9 meters), with mineralization continuing beyond 1,600 feet (487.6 meters). This is a rarity in porphyry systems, where high-grade zones typically diminish with depth. CEO David Greenway called the core samples “unparalleled in my career,” emphasizing the deposit’s scale. The intersection of chalcopyrite, cuprite, and tourmaline breccia matrices further supports the presence of a primary sulfide zone—a hallmark of large, economic porphyry deposits.

The drilling also confirmed the deposit’s continuity. Geophysical surveys and AI-driven targeting (via ExploreTech’s Engine platform) identified breccia zones as critical fluid pathways, and MHB-34’s results validate this approach. The deposit remains “open in all directions,” with mineralization extending below historic underground workings. This bodes well for expanding the resource, especially as 83,930 feet of historical drilling provide a robust dataset for modeling.

Assays and the Resource Potential

While MHB-34’s assays are still pending, the May 2025 results from MHB-33 offer a glimpse of the project’s grade potential. MHB-33 intersected 2.15 meters grading 5.8% copper, 103 g/t silver, and 0.78 g/t gold, with a subsection of 0.75 meters hitting 9.2% copper, 178 g/t silver, and 1.3 g/t gold. These grades represent a marked improvement over 2023’s lower-grade results (e.g., 1.2% copper) and suggest better targeting of high-grade zones.

Giant plans to update its Mineral Resource Estimate (MRE) by late 2025, incorporating these results. A feasibility study, due by early 2026, will assess the economic viability of extracting both near-surface leachable copper and deeper primary sulfides. The project’s 9,684-acre footprint and infrastructure advantages—nearby rail, power, and road access in Nevada’s top-ranked mining jurisdiction—could further enhance its appeal.

Investment Implications: Catalysts and Risks

The stock’s 12% surge following the MHB-33 results underscores investor optimism, but several factors could amplify or temper this momentum:
- Catalyst 1: MRE and Feasibility Outcomes: A robust MRE could boost the project’s tonnage and grade estimates, while the feasibility study will clarify mining methods and costs.
- Catalyst 2: Copper Demand: With global copper demand projected to grow by 40% by 2030 (IEA), Majuba Hill’s timing aligns with the push for domestic critical mineral production.
- Risk 1: Assay Delays: Pending results from MHB-34 and ongoing drilling could introduce volatility if grades disappoint.
- Risk 2: Permitting: While Nevada is mining-friendly, permitting delays or cost overruns could impact timelines.

Conclusion: A Strategic Bet on Copper’s Future

Majuba Hill’s geological advancements—deep mineralization, robust QA/QC, and alignment with clean energy demand—suggest it could become a cornerstone of Giant Mining’s portfolio. With copper prices hovering near $4 per pound and U.S. policymakers prioritizing domestic supply chains, the project’s 9,684-acre scale and proximity to infrastructure give it a competitive edge.

If the pending assays confirm the high-grade trends seen in MHB-33, the updated MRE could catapult Majuba Hill into the ranks of top-tier porphyry deposits. Investors should watch closely for the Q4 2025 MRE and the feasibility study’s release in early 2026. For those betting on the energy transition and U.S. critical mineral self-sufficiency, Majuba Hill’s depths may hold more than copper—they could bury doubts about Giant Mining’s future.