Adamera Minerals Establishes Washington Tungsten Hub to Advance Domestic U.S. Supply
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Vancouver, British Columbia – June 25, 2026 – Adamera Minerals Corp. (TSX-V: ADZ; OTC: DDNFF) (“Adamera” or the “Company”) establishes the Washington Tungsten Hub, consolidating four scheelite-bearing tungsten properties across northeastern Washington, to advance domestic U.S. tungsten supply. The Hub is being established ahead of a January 1, 2027 federal procurement deadline that will bar tungsten from China, Russia, Iran, and North Korea from certain U.S. defense applications at a time when the United States has no operating domestic tungsten mine.
A video discussion with Mark Kolebaba on Adamera’s tungsten strategy is available below.
Key Highlights:
- Strategic Domestic Positioning: A structural global tungsten supply shortage and an approaching U.S. defense procurement deadline have fundamentally reset the value of domestic brownfield tungsten assets. Adamera's Washington Tungsten Hub is positioned to respond.
- Formation of the Washington Tungsten Hub: Four properties with known tungsten mineralization, consolidated under single ownership for the first time, creating district-scale exploration and development potential.
- Pathway to Near-Term Production: Underground rehabilitation at Talisman and Tungsten Ridge provides direct access to known mineralization, while surface exploration creates the opportunity to expand it.
A Centralized Strategy
The four properties within the hub share a common geological setting, scheelite-bearing tungsten mineralisation hosted within carbonate skarn systems that have demonstrated past production. Consolidating these closely located assets under a unified program creates the potential to scale both production and project size through centralized logistics, shared infrastructure, and coordinated exploration.
"The Washington Tungsten Hub provides Adamera investors direct exposure to what I believe is a district-scale brownfield tungsten portfolio at a time when tungsten prices have already risen 900% in response to restricted supply and increased demand. This supply/demand imbalance is not a short-term problem, the work being done across the industry is urgent, and we are just beginning to understand what our district holds," states Mark Kolebaba, President and CEO of Adamera Minerals.
The Washington Tungsten Hub
Initially our focus will be to determine the scalability of tungsten development in this region. The four primary assets are as follows:
- Talisman (Flagship): A past-producing underground tungsten and base metals mine. Historical records indicate tungsten grades of 0.35%–1.0% WO₃, with zones reporting 5% copper and 103 g/t silver (see footnote 1). The copper and silver credits are consistent with the polymetallic nature of these skarn systems and represent potential byproduct revenue that could help support project economics. Other zones are reported to have carried lead and zinc. Underground workings are partially open and Adamera has identified additional exploration targets across the property requiring systematic follow-up.
- Tungsten Ridge: A past producer of tungsten, copper, molybdenite, and silver. Historical records report tungsten grades of 0.1%–7.6% WO₃ across multiple mineralised zones and working levels, with higher values reflecting selective samples from higher-grade shoots rather than bulk estimates (see footnote 1). Underground workings remain open or partially open. Additional untested targets have been identified and require exploration follow-up.
- Pierre Creek Tungsten: A recently staked property with a known tungsten-copper-gold occurrence and evidence of past mining activity. Pierre Creek expands the footprint of the Hub and adds an early-stage exploration asset to the portfolio.
- Roosevelt Tungsten Skarn Front: Located on Adamera’s Buckhorn 2.0 property, north of Kinross Gold’s past producing Buckhorn Gold Mine, are several tungsten bearing skarns including the Magnetic and Roosevelt mines. Adamera has identified tungsten anomalies on the property within its Buckhorn sample database.
Advancement and Development Plan
To advance the Washington Tungsten Hub, Adamera plans to conduct both surface exploration and underground rehabilitation as follows:
- Surface Exploration & Drilling: Systematic surface exploration and drilling across the Hub, with initial focus on the Talisman property. Work is planned to commence shortly.
- Subsurface Rehabilitation: Advancing contractor engagement to re-establish safe access to the historic workings at Talisman and Tungsten Ridge, with the objective of characterising mineralisation continuity at depth.
- Financing: Adamera is pursuing strategic partnerships and capital markets financing to advance the Washington Tungsten Hub, with timing aligned to the January 2027 procurement deadline.
Tungsten - A Strategic Metal
Tungsten is classified as a critical mineral by both the United States and the European Union. Ammonium Paratungstate (APT), the primary international pricing benchmark, surged from approximately $340/mtu (metric tonne unit, WO₃) in early January 2025 to approximately $3,150/mtu by mid-2026, an increase of roughly 900% in 18 months.
This price surge reflects the convergence of Chinese export controls, which have sharply reduced the flow of tungsten to western markets, with increasing demand from the defense, aerospace, cemented carbide, and semiconductor sectors. Tungsten’s applications in armor-piercing munitions, Patriot missiles, THAAD air-defense systems, and advanced electronics make it irreplaceable across both defense and civilian manufacturing.
China currently controls approximately 80% of global tungsten mine production. According to the U.S. Geological Survey, the United States imports an estimated 10,000 metric tons of tungsten annually, with no domestic mine production since 2015. Effective January 1, 2027, Section 4872 of the National Defense Authorization Act bars tungsten mined, refined, or processed in China, Russia, Iran, or North Korea from certain U.S. defense procurement, a structural shift with no domestic primary producer currently in position to meet it.
About Adamera Minerals Corp.
Adamera Minerals Corp. is a Vancouver-based mineral exploration company advancing a portfolio of critical mineral and precious metal projects in southern British Columbia and Washington State. The Company is building a tungsten-focused critical mineral portfolio in eastern Washington to support domestic U.S. supply, while exploring for high-grade gold, silver, and copper. Adamera trades on the TSX Venture Exchange (ADZ) and OTC Markets (DDNFF). For additional context on the Company’s tungsten strategy, please see: Mark Kolebaba interview discussing tungsten strategy..
On behalf of the Board of Directors,
Mark Kolebaba, President and CEO
Adamera Minerals Corp.
Tel: (604) 307-6450 | Email: info@adamera.com | www.adamera.com
Martin St. Pierre, P.Geo., a Qualified Person as defined by National Instrument 43-101, has reviewed and approved the technical content of this release. Mr. St. Pierre has reviewed the primary historical source documents referenced herein.
(1) Historic production data and sampling grades are sourced from the Talisman Mine record (MRDS#10042380) and Washington Division of Mines and Geology Bulletin No. 37. These are historical figures; a Qualified Person has not completed sufficient work to verify them under NI 43-101.
Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release. The TSX Venture Exchange has not reviewed and does not accept responsibility for the adequacy or accuracy of this release. Statements in this press release, other than purely historical information, including statements relating to the Company’s future plans and objectives or expected results, may include forward-looking statements. Forward-looking statements are based on numerous assumptions and are subject to all of the risks and uncertainties inherent in resource exploration and development. As a result, actual results may vary materially from those described in the forward-looking statements.
