U.S. GoldMining Welcomes Inclusion of Copper & Silver to U.S. Critical Minerals List, Highlights Whistler Gold-Copper Project in Alaska

On November 7, 2025, the Interior Department, through the U.S. Geological Survey, published its final 2025 List of Critical Minerals, outlining 60 minerals vital to the U.S. economy and national security that face potential risks from disrupted supply chains. The list includes both copper and silver, which make up two of the three metal components, along with gold, within the mineral resource estimate at the Whistler Project. The Project, located just 105 miles from the main population center of Anchorage, in Alaska (see Figure 1), is estimated to contain mineral resources of over 1 billion pounds ("Blbs") of copper and almost 19 million ounces ("Moz") silver in the Indicated category in addition to 3.93 Moz gold, and an additional 0.3 Blbs copper, 11.5 Moz silver and 3.31 Moz gold in the Inferred category¹ (see Table 1).  

Tim Smith, Chief Executive Officer of U.S. GoldMining, commented: “Since January 2025, the U.S. federal administration has begun to implement initiatives to encourage the exploration for and extraction of critical minerals on U.S. soil, minerals which are crucial to securing domestic resource security. Publication of the 2025 List of Critical Minerals is well timed as the Company is undertaking the PEA on its flagship Whistler Gold-Copper Project and continues to undertake and plan district-scale exploration on its 100% owned 53,700 acre property in one of the United States’ most prospective and mining-friendly jurisdictions, Alaska.” 

About the Whistler Gold–Copper Project:  A U.S. Based Critical Minerals Project

• Multi-metal resource: Whistler contains gold, copper and silver, aligning with U.S. critical mineral priorities.
• Strategic domestic location: Whistler is the closest large undeveloped gold-copper mineral deposit to Anchorage, Alaska’s largest city (see Figure 1), and therefore has good proximity to existing highways, port facilities, grid power, a skilled work force, and supply chain and services sector. The Project is also set to benefit from State infrastructure development, in particular the planned West Susitna Access Project (see news releases dated July 28, 2025, and August 11, 2025). Located on State land, potential future mine permitting at Whistler should benefit from the State’s robust permitting framework.
• Geopolitical hedge: U.S. domiciled projects like Whistler could help reduce dependence on tariffed imports from high-risk jurisdictions. Whistler is also set to potentially benefit from strong policy tailwinds including a supportive climate of State and Federal policies respecting responsible resource extraction in Alaska (see news releases dated January 27, 2025, and March 24, 2025).

Table 1: Mineral Resource Estimate for the Total Project (Effective date: September 12, 2024): PDF

Technical Information

Tim Smith, P.Geo., Chief Executive Officer of U.S. GoldMining, has supervised the preparation of this news release and has reviewed and approved the scientific and technical information contained herein. Mr. Smith is a "qualified person" as defined in Canadian National Instrument 43-101 – Standards of Disclosure for Mineral Projects.

About U.S. GoldMining Inc.

U.S. GoldMining Inc. is an exploration and development company focused on advancing the 100% owned Whistler Gold-Copper Project, located 105 miles (170 kilometers) northwest of Anchorage, Alaska, U.S.A. The Whistler Project consists of several gold-copper porphyry deposits and exploration targets within a large regional land package entirely on State of Alaska mining claims totaling approximately 53,700 acres (217.5 square kilometers). The Whistler Project Mineral Resource Estimate comprises 294 Mt at 0.68 g/t AuEq for 6.48 Moz AuEq Indicated, plus 198 Mt at 0.65 g/t AuEq for 4.16 Moz AuEq Inferred.

Visit www.usgoldmining.us for more information.

Forward-Looking Statements

Except for the statements of historical fact contained herein, the information presented in this news release constitutes “forward-looking statements” within the meaning of the United States federal securities laws and “forward-looking information” within the meaning of applicable Canadian securities laws (collectively, "forward-looking statements"). Such statements include statements with regard to the Company’s expectations regarding the potential benefits of policy support for copper and silver projects in the United States, the Project, potential exploration targets, future work programs, the outlook or copper markets, and the Project’s exploration potential. Words such as "expects", "anticipates", “plans”, estimates” and "intends" or similar expressions are intended to identify forward-looking statements. Forward-looking statements are based on U.S. GoldMining’s current expectations and are subject to inherent uncertainties, risks and assumptions that are difficult to predict and involve known and unknown risks, uncertainties and other factors, which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such risks and other factors include, among others, the actual results of future exploration may not confirm expectations, variations in the underlying assumptions associated with the estimation or realization of mineral resources, the availability of capital to fund programs, accidents, labor disputes and other risks of the mining industry including, without limitation, those associated with the environment, delays in obtaining governmental approvals or permits, title disputes other risks inherent in the exploration and development of mineral properties and the other risk factors set forth in the Company’s filings with the U.S. Securities and Exchange Commission at.www.sec.gov and Canadian Securities Administrators at www.sedarplus.ca. Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking statements, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking statements contained in this news release. Forward-looking statements contained in this news release are made as of this date, and U.S. GoldMining does not undertake any duty to update such information except as required under applicable law.