Giant Mining Expands New Copper Discovery at Majuba Hill Copper-Silver-Gold Project, Nevada with AI-Driven Drill Program as Phase 2 Exploration Begins
Press Release September 3, 2025
Giant Mining Expands New Copper Discovery at Majuba Hill Copper-Silver-Gold Project, Nevada with AI-Driven Drill Program as Phase 2 Exploration Begins VANCOUVER, BC — September 3, 2025 — Giant Mining Corp. (CSE: BFG | OTC: BFGFF | FWB: YW5 | CSE: BFG.WT.A | CSE: BFG.WT.B) (“Giant Mining” or the “Company”) is pleased to announce the commencement of its highly anticipated 2025 Phase 2 Exploration Program at the Majuba Hill Copper- Silver-Gold Project in Pershing County, Nevada.
Building upon the success of Phase 1, this next phase leverages a porphyrydriven, magmatic-hydrothermal breccia model to unlock the district-scale potential at the Majuba Hill.
With the United States accelerating efforts to re-shore critical mineral supply chains, copper has emerged as an indispensable resource—essential for electrification, grid modernization, renewable energy, and advanced manufacturing. Majuba Hill, located in one of the world’s most mining-friendly jurisdictions, is poised to become a key domestic source of copper, supporting America’s transition to a sustainable, self-reliant future.
2025 Phase 2 Surface Exploration Highlights-Figure 1:
- Southern Breccia Zone – Historic Workings Area: Integration of drilldefined breccia zones into the 3D digital model and copper mineralization, positioning Majuba Hill for future exploration.
- Northern Breccia Zone – Newly recognized Breccia Body Targeting: Comprehensive surface mapping, core data analysis, and the addition of 93 new soil samples to evaluate the zone’s full extent.
- Ball Park Breccia – Newly recognized Breccia Body with multiple Breccias: Improve geologic characterization by utilizing historical drill data to delineate potential high-grade breccia-hosted mineralization.
- 789 Resistivity Target – Advanced AI Integration: Deployment of ExploreTech’s AI-driven geophysical modeling to refine IP/resistivity targets using the latest porphyry-breccia exploration techniques.
- New soil samples will extend the existing soil sample grid and provide additional geochemical characterization data for the newly recognized Northern Breccia Zone and Ball Park Breccia.
Figure 1: Phase 2 Surface Exploration Target Zones
2025 Phase 1: AI Drill Hole Highlights:
Final assay results have been received for Phase 1 of the Spring 2025 diamond drilling program (the “Core Program”) for core hole MHB-36, completed at the Majuba Hill Porphyry Copper-Silver-Gold Project (“Majuba Hill”) in Pershing County, Nevada (Figure 2).
This was the fifth and final drill hole of the program, completed to a total depth (TD) of 1,100 feet (335.3 meters).
“The final assay results from MHB-36 confirm the effectiveness of our AI-driven targeting strategy at Majuba Hill,” stated David Greenway, CEO of Giant Mining. “ExploreTech’s proprietary geophysical modeling successfully identified a high- potential breccia zone in the Southern Corridor, expanding our understanding of Majuba’s copper mineralization. With these results in hand, we are confident that our Phase 2 program will build on this momentum and further unlock the district- scale copper, silver, and gold potential of Majuba Hill in Nevada.”
Core hole MHB-36 was designed by Exploration Technologies, Inc. (“ExploreTech”) using its proprietary AI-assisted geophysical modeling system to test a high-potential resistivity anomaly in the Southern Zone Breccia Corridor of the Majuba Hill project area. The AIdriven targeting approach sought to identify geologically favorable zones with potential for copper mineralization beyond those already known.
Figure 2: Map showing copper mineralized breccias and 2024-25 core holes
The primary objective of the Core Program was to delineate and better understand the geometry and extent of the copper-bearing breccia zones. Assay results and geological interpretation outline a distinct copper-mineralized breccia body at Majuba Hill (Figure 2).
Highlights
Ø MHB-36 intersected numerous 5 to 20 feet (1.5-6.1 m) long intervals of supergene and hypogene copper in veins and disseminated in the rhyolite porphyry and within Triassic age metasediment roof pendants in the intrusive and magmatic-hydrothermal breccia bodies (see Table 1). The copper values are directly correlative to the presence of chalcopyrite (Figure 3). Including:
- 1.5 ft (0.5 m) @ 1.21% Cu from 741.5 to 743 feet (225-226.5
m)
Ø The South Resistivity Anomaly (Figure 2) outlined by the ExploreTech geophysical modeling process distinctly identified the zone with hypogene (chalcopyrite) copper mineralization. Based on the recent review and modeling by Giant’s technical team and consultants, this resistivity anomaly is directly adjacent to the deeper parts of the magmatic-hydrothermal breccia body.
Ø Copper within the “Mineralized Tourmaline-Early Breccia” (Figure 2) included enriched and primary (hypogene) copper mineralization as previously announced on May 22, 2025 and July 15, 2025 (Table 1).
Ø Previously reported Copper occurred in long intervals of copper mineralization within both the main “Mineralized Tourmaline-Early Breccia” and the surrounding “Late Stockworked Rhyolite” (Figure 2).
Buster Hunsaker, Consulting Geologist, commented: “The ExploreTech process gives Giant Mining a solid vectoring tool. With this AI-driven process, the Company can utilize the extensive property-wide, IP/Resistivity database. The presence of the copper (as chalcopyrite) is directly related to the magmatic- hydrothermal breccias and the ExploreTech process pointed us straight to the anomalous zone.”
| Hole ID | Interval ft | Cu% | CuEq with Ag | From ft | To ft | Significant Interval Copper* | ||
|---|---|---|---|---|---|---|---|---|
| MHB-30 | Entire | 800.0 | 0.43 | 0 | 800.0 | 800 ft @ 0.43% Cu from 0 to 800 feet | ||
| Hole | ||||||||
| includes | 218 | 1.35 | 2.14 | 0 | 218 | 218 ft @ 1.35% Cu from 0 to 218 feet | ||
| with | 74 | 2.60 | 2.90 | 140 | 214 | 74 ft @ 2.6% Cu from 140 to 214 feet | ||
| MHB-31 | Entire | 1086.0 | 0.03 | 0 | 1086.0 | 1086 ft @ 0.03% Cu from 0 to 1086 feet | ||
| Hole | ||||||||
| includes | 115.0 | 0.10 | 769 | 884.0 | 115 ft @ 0.1% Cu from 769 to 884 feet | |||
| and | 89.0 | 0.08 | 909 | 998.0 | 89 ft @ 0.08% Cu from 909 to 998 feet | |||
| MHB-32 | Entire | 889.5 | 0.16 | 0.25 | 0 | 889.5 | 889.5 ft @ 0.16% Cu from 0 to 889.5 feet | |
| Hole | ||||||||
| Significant Interval | 379.5 | 0.33 | 0.51 | 510 | 889.5 | 379.5 ft @ 0.33% Cu from 510 to 889.5 feet | ||
| includes | 85 | 0.64 | 1.16 | 510 | 595 | 85 ft @ 0.64% Cu from 510 to 595 feet | ||
| and includes | 170 | 0.41 | 0.51 | 720 | 890 | 169.5 ft @ 0.41% Cu from 720 to 889.5 feet | ||
| with | 40.0 | 1.36 | 1.50 | 780 | 820.0 | 40 ft @ 1.36% Cu from 780 to 820 feet | ||
| with | 10.0 | 4.36 | 4.72 | 805 | 815.0 | 10 ft @ 4.36% Cu from 805 to 815 feet | ||
| MHB-33 | Entire | 936.0 | 0.02 | 0.05 | 0 | 936.0 | 936 ft @ 0.02% Cu from 0 to 936 feet | |
| Hole |
| Hole ID | Interval ft | Cu% | CuEq with Ag | From ft | To ft | Significant Interval Copper* | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| with | 35.0 | 0.09 | 0.15 | 5 | 40.0 | 35 ft @ 0.09% Cu from 5 to 40 feet | |||||||
| includes | 5.0 | 0.27 | 0.33 | 35 | 40.0 | 5 ft @ 0.27% Cu from 35 to 40 feet | |||||||
| and | 5.0 | 0.11 | 0.18 | 345 | 350.0 | 5 ft @ 0.11% Cu from 345 to 350 feet | |||||||
| and | 5.0 | 0.11 | 0.12 | 620 | 625.0 | 5 ft @ 0.11% Cu from 620 to 625 feet | |||||||
| and | 5.0 | 0.11 | 0.13 | 895 | 900.0 | 5 ft @ 0.11% Cu from 895 to 900 feet | |||||||
| MHB-34 | Entire | 1963.0 | 0.09 | 0.13 | 0 | 1963.0 | 1963 ft @ 0.09% Cu from 0 to 1963 feet | ||||||
| Hole | |||||||||||||
| with | 40 | 0.15 | 0.3 | 100 | 140 | 40 ft @ 0.15% Cu from 100 to 140 feet | |||||||
| with | 5 | 0.37 | 0.5 | 230 | 235 | 5 ft @ 0.37% Cu from 230 to 235 feet | |||||||
| with | 15 | 0.10 | 0.2 | 370 | 385 | 15 ft @ 0.1% Cu from 370 to 385 feet | |||||||
| with | 35 | 0.08 | 0.1 | 405 | 440 | 35 ft @ 0.08% Cu from 405 to 440 feet | |||||||
| with | 10 | 0.14 | 0.2 | 505 | 515 | 10 ft @ 0.14% Cu from 505 to 515 feet | |||||||
| with | 135 | 0.14 | 0.2 | 625 | 760 | 135 ft @ 0.14% Cu from 625 to 760 feet | |||||||
| includes | 10 | 0.40 | 0.5 | 665 | 675 | 10 ft @ 0.4% Cu from 665 to 675 feet | |||||||
| 45 | 0.14 | 0.2 | 1075 | 1120 | 45 ft @ 0.14% Cu from 1075 to 1120 feet | ||||||||
| Significant Interval | 500 | 0.21 | 0.2 | 1210 | 1710 | 500 ft @ 0.21% Cu from 1210 to 1710 feet | |||||||
| includes | 30 | 0.13 | 0.2 | 1210 | 1240 | 30 ft @ 0.13% Cu from 1210 to 1240 feet | |||||||
| and | 165 | 0.24 | 0.3 | 1280 | 1445 | 165 ft @ 0.24% Cu from 1280 to 1445 feet | |||||||
| and | 205 | 0.27 | 0.3 | 1505 | 1710 | 205 ft @ 0.27% Cu from 1505 to 1710 feet | |||||||
| which includes | 55 | 0.41 | 0.5 | 1505 | 1560 | 55 ft @ 0.41% Cu from 1505 to 1560 feet | |||||||
| 30 | 0.07 | 0.1 | 1230 | 1260 | 30 ft @ 0.07% Cu from 1230 to 1260 feet | ||||||||
| MHB-35 | Entire | 596.0 | 0.04 | 0.08 | 0 | 596.0 | 596 ft @ 0.04% Cu from 0 to 596 feet | ||||||
| Hole | |||||||||||||
| with | 90 | 0.09 | 0.1 | 115 | 205 | 90 ft @ 0.09% Cu from 115 to 205 feet | |||||||
| and | 30 | 0.08 | 0.2 | 225 | 255 | 30 ft @ 0.08% Cu from 225 to 255 feet | |||||||
| MHB-36 | Entire | 1100.0 | 0.02 | 0.03 | 0 | 1100.0 | 1100 ft @ 0.02% Cu from 0 to 1100 feet | ||||||
| Hole | |||||||||||||
| with and and | 5.0 | 0.12 0.21 0.14 | 0.0 0.3 0.2 | 535 610 655 | 540 615 657 | 5 ft @ 0.12% Cu from 535 to 540 feet 5 ft @ 0.21% Cu from 610 to 615 feet 1.5 ft @ 0.14% Cu from 655 to 656.5 feet | |||||||
| 5.0 | |||||||||||||
| 1.5 | |||||||||||||
| and | 1.5 | 0.23 | 0.3 | 673 | 675 | 1.5 ft @ 0.23% Cu from 673 to 674.5 feet | |||||||
| and | 1.5 | 1.21 | 1.7 | 742 | 743 | 1.5 ft @ 1.21% Cu from 741.5 to 743 feet | |||||||
| and | 5.0 | 0.16 | 0.2 | 790 | 795 | 5 ft @ 0.16% Cu from 790 to 795 feet | |||||||
| and | 20.0 | 0.08 | 0.1 | 865 | 885 | 20 ft @ 0.08% Cu from 865 to 885 feet | |||||||
| and | 5.0 | 0.12 | 0.20 | 960 | 965.0 | 5 ft @ 0.12% Cu from 960 to 965 feet |
Table 1: Significant Copper Intervals for 2024 and 2025 Drilling. (*True widths are unknown.) *Copper Equivalent Calculation: Copper equivalent (CuEq) values were calculated by combining the assay values for copper and silver assay results for each intercept using an interval-weight calculation based on $4.475/lb Cu and $31.29/oz Ag.
Figure 3: Left Photo - Chalcopyrite in quartz, 0.23% Cu @ 674 feet (205.4 m). Right Photo – Chalcopyrite in intrusive porphyry, 0.16% Cu @ 795 feet (242.3 m)
Majuba Hill’s critically important characteristics are as follows:
Nevada, USA — a globally top-ranked mining jurisdiction, Location: ranked #1 in the Fraser Institute’s 2022 Annual Survey of Mining Companies.
Project Size: 9,684 Acres
The Majuba Hill property is located 113 road kilometers (70 miles) southwest of Winnemucca, Nevada, and 251 kilometers (156 miles) northeast of Reno. It is accessible via wellmaintained county roads from the Imlay, Nevada exit on U.S. Interstate 80, followed by a 23-mile drive west. People, roads,
Infrastructure:
power, and water are fundamental considerations for infrastructure, and Majuba Hill already benefits from a strong foundation in all these areas. This existing infrastructure provides a significant advantage, offering substantial cost savings compared to more remote projects.
History: Historical Producer
Approximately 89,395 feet of drilling to date. Rough Drilling: replacement value of drilling USD $12.1 Million using current costs.
The project shows indications of a potentially large Cu – Ag +/- Mineralization: Au mineralized body with many features in common with both large porphyry copper, silver, and gold projects.
The IP survey, deep drilling, and step-out drilling indicate Expandability: significant expansion potential, with mineralization open in all directions.
Fully Financed: Secured funding for next phase of drilling at Majuba Hill
Quality Assurance/Quality Control (“QA/QC”) Measures, Chain of Custody
The Company utilizes a QA/QC program using best industry practices at the Majuba Hill Project. The samples are placed in cloth sample bags and are transported from the Giant Mining secure warehouse to the ALS Labs Sample Prep Facility in Elko, Nevada. ALS Labs then securely transports the prepared pulps to their analytical lab in North Vancouver, B.C.
Drill core samples are sawn in half lengthwise and one half is placed in labeled cloth sample bags. All samples are analyzed for copper, gold, silver, and 33 other elements. Gold is determined by ALS Labs method Au-AA23 which is a fire assay with an AAS finish on a 30gram split. Copper, silver, and the remaining 31 elements are determined by ALS Labs method ME-ICP61 which is a four-acid digestion and ICP-AES assay. Approximately 5% of the submitted samples are drill duplicates and copper-gold-porphyry commercial standard reference material pulps. The remaining pulps will be retrieved from ALS Labs.
Qualified Person
The scientific and technical information contained in this news release has been reviewed and approved by E.L. “Buster” Hunsaker III, CPG 8137, a non-independent consulting geologist who is a “Qualified Person” as such term is defined under National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43- 101”).
Market Awareness
Giant Mining has entered into a three-month agreement with InteractiveOffers LLC (“Interactive Offers”) for a one-time payment of USD $61,000. Under this engagement, Interactive Offers will support the Company in developing and executing a comprehensive investor relations program designed to enhance transparency and strengthen engagement with the investment community.
The services will include strategic communication planning, dissemination of financial disclosures, and the maintenance of an updated investor relations website with access to filings, press releases, and corporate updates. In addition, Interactive Offers will conduct targeted outreach to both retail and institutional investors to broaden awareness of Giant Mining’s strategic growth initiatives and corporate milestones.
Interactive Offers has extensive experience supporting small-cap and micro-cap companies, with a proven focus on crafting clear, compelling narratives for investors. This engagement is expected to increase Giant Mining’s visibility in the capital markets while ensuring the Company remains committed to accurate and timely disclosure.
Interactive Offers and its principal, Eder Holguin, can be reached at [email protected] or by phone at +1 (844) 563-3377. The firm’s office is located at 327 Plaza Real, Ste 319, Boca Raton, FL 33432 USA.
About Giant Mining Corp.
Giant Mining is focused on identifying, acquiring, and advancing late-stage copper and copper/silver/gold projects to meet the growing global demand for critical metals. This demand is driven by initiatives like the Green New Deal in the United States and similar climate-focused programs worldwide, which require substantial amounts of copper, silver, and gold for electric vehicles, renewable energy infrastructure, and the modernization of clean and affordable energy systems.
The Company’s flagship asset is the Majuba Hill Copper, Silver, and Gold District, located 156 miles (251 km) from Reno, Nevada. Majuba Hill is situated in a mining-friendly jurisdiction with supportive regulations and has the potential to become one of the next major copper deposits, critical for meeting the increasing need for this red metal.
Neither the Canadian Securities Exchange nor its Market Regulator (as that term is defined in the policies of the Canadian Securities Exchange) accepts responsibility for the adequacy or accuracy of this release.
On Behalf of the Board of Giant Mining Corp.
“David Greenway”
David C. Greenway
President & CEO
For further information, please contact:
E: [email protected] P: 1 (236) 788-0643
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Forward-Looking Statements
This news release contains certain forward-looking information. Such information involves known and unknown risks, uncertainties and other factors that may cause actual results, performance or achievements to be materially different from those implied by statements herein, and therefore these statements should not be read as guarantees of future performance or results. All forward-looking statements are based on the Company’s current beliefs as well as assumptions made by and information currently available to it as well as other factors. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date of this press release. Due to risks and uncertainties, including the risks and uncertainties identified by the Company in its public securities filings, actual events may differ materially from current expectations. Company has utilized artificial intelligence (“AI”) tools and modeling in its exploration targeting, such technologies are emerging and unproven in mineral exploration. There can be no assurance that the use of AI will improve exploration outcomes, result in discoveries, or provide results consistent with management’s expectations. The Company disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.
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