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Critical One Energy Acquires 18.5% Interest in Dark Star Minerals, Bolstering Support for Uranium Development in Namibia

TORONTO, Sept. 02, 2025 (GLOBE NEWSWIRE) -- (formerly Madison Metals Inc.) (鈥�Critical One鈥� or the 鈥�Company鈥�) (CSE: CRTL) (OTCQB: MMTLF) (FSE: 4EF0), a leading Canadian exploration company focused on critical metals and minerals, is pleased to announce its acquisition of an 18.5% interest in Dark Star Minerals Inc. (鈥淒ark Star鈥�) (CSE: BATT, FSE: P0W), an exploration company advancing high-potential uranium projects in Namibia鈥檚 Erongo uranium province. This strategic investment underscores Critical One鈥檚 commitment to supporting the development of uranium assets to meet energy demands while maintaining a focus on its core Howells Lake Antimony-Gold Project (鈥淗owells Lake Project鈥�), located near the Ring of Fire corridor in the Thunder Bay Mining Division of Ontario, Canada.

The 18.5% stake in Dark Star positions Critical One as a significant shareholder, aligning with its vision to drive value through strategic partnerships for the global energy transition. The investment follows the successful closing of Critical One鈥檚 sale of its Khan and Cobra uranium projects to Dark Star, announced on , in a deal valued at US$3.5 million. As part of the agreement, Critical One received 14 million common shares of Dark Star, contributing to its current ownership position, along with staged cash payments and a 2% gross overriding royalty on all metals produced from the two uranium projects, with an option for Dark Star to buy back 0.5% of either royalty for US$1.5 million.

鈥淲e are excited to hold a significant stake in Dark Star and to support their efforts to advance the Khan and Cobra uranium projects in Namibia, the according to the World Nuclear Association,鈥� said Duane Parnham, Founder, Executive Chairman, and CEO of Critical One Energy. 鈥淭hese projects, located near the Rossing Uranium Mine, have demonstrated significant potential, with high-grade results of up to 8.47% U鈧僌鈧� at Khan West (). Our investment reflects our confidence in Dark Star鈥檚 ability to accelerate exploration and development, creating value for all stakeholders.鈥�

Namibia鈥檚 Erongo uranium province is a globally recognized jurisdiction for uranium mining, supported by a favourable regulatory environment and proximity to established operations like the Rossing Uranium Mine. The Khan West Project, including Mining Licence 86A, has been authorized for nuclear fuel extraction by the Namibian Ministry of Mines and Energy, with recent exploration highlighting high-grade uranium intrusions. The Cobra North Project further enhances Dark Star鈥檚 portfolio with multiple exploration targets and a historical resource estimate, positioning it for significant growth in the uranium sector.

With the Company as a shareholder and with Duane Parnham coming on as a director of Dark Star, Critical One is well-positioned to contribute to the strategic development of these assets while focusing its primary efforts on the Howells Lake Project. This dual approach strengthens Critical One鈥檚 role in meeting the rising global demand for critical minerals and clean energy solutions.

鈥淲e look forward to collaborating with Dark Star to unlock the potential of these uranium projects while continuing to advance our antimony and gold exploration in Canada,鈥� added Parnham. 鈥淭his investment aligns with our mission to power the future of clean energy and advanced technologies, delivering value to our shareholders and supporting global energy transition goals.鈥�

About Critical One Energy Inc.

Critical One Energy Inc. (formerly Madison Metals Inc.) is a forward-focused critical minerals and upstream energy company, powering the future of clean energy and advanced technologies. The addition of the Howells Lake Antimony-Gold Project broadens the Company鈥檚 exposure to antimony, one of the most in-demand critical minerals. Backed by seasoned management expertise and prime resource assets, Critical One is strategically positioned to meet the rising global demand for critical minerals and metals. Its mine exploration portfolio is led by antimony-gold exploration potential in Canada and uranium investment interests in Namibia, Africa. By leveraging its technical, managerial, and financial expertise, the Company upgrades and creates high-value projects, thereby driving growth and delivering value to its shareholders.

Additional information about Critical One Energy Inc. can be found at and on the Company鈥檚 at .

About Dark Star Minerals Inc.

Dark Star Minerals Inc. is a mineral exploration company focused on the acquisition and development of critical mineral resources, with a strategic emphasis on uranium and rare earths. Its portfolio includes the Cobra North and Khan West uranium projects in Namibia鈥檚 Erongo uranium province, the Bleasdell Project in Northern Saskatchewan, Canada, and an option to acquire a 100% interest in the Ghost Lake claims in Labrador.

For further information, please contact:

Duane Parnham
Executive Chairman & CEO
Critical One Energy Inc.
+1 (416) 489-0092

Media inquiries:

Adam Bello
Manager, Media & Analyst Relations
Primoris Group Inc.
+1 (416) 489-0092

Neither the Canadian Securities Exchange nor CIRO accepts responsibility for the adequacy or accuracy of this release.

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