Vancouver, British Columbia--(Newsfile Corp. - July 3, 2025) - Noble Plains Uranium Corp. (TSXV: NOBL) (OTCQB: NBLXF) (FSE: INE0) ("Noble Plains" or the "Company") is pleased to announce that it has submitted a drill permit application for a 15-hole program on the recently optioned Shirley Central Property-just one month after acquiring the strategic claims. Located in the heart of Wyoming's Shirley Basin, a prolific and infrastructure-ready uranium district in the United States, this initiative marks a step forward in the Company's strategy to rapidly convert brownfield assets into compliant uranium resources.

The Shirley Central Property is surrounded by two of the most active uranium developers in the United States-Ur-Energy Inc. and Uranium Energy Corp. (UEC). Several Noble Plains claims lie directly within Ur-Energy's permit boundary, while others are encircled by UEC's land package, positioning Noble Plains squarely in the centre of a rapidly evolving production hub. Ur-Energy's Shirley Basin Project currently hosts a 43-101 compliant Measured and Indicated Resource totalling 8.816 million pounds U₃O₈ at an average grade of 0.23%¹ and is currently under construction².

"This is exactly the kind of brownfield opportunity that aligns with our corporate mission-projects with historical workings, clear geological upside, and the potential to be fast-tracked into defined resources," stated Drew Zimmerman, President of Noble Plains. "With permitting now underway, we are executing on our plan to advance this asset through focused, modern exploration with the objective of delineating a compliant resource at Shirley Central."

Figure 1: Shirley Central Property Drill Targets

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Leveraging Historical Work to Accelerate Resource Definition

The Company has identified at least five distinct high-density drilling zones from historical records and aerial photographs originally produced by Kerr-McGee and others. These areas-positioned between former producing open-pit mines-feature drill spacing as tight as 25m x 25m, indicative of targeted delineation for higher-grade uranium mineralization. This historic footprint offers a robust foundation for a cost-effective and high-confidence drill campaign.

"Given the intensity and precision of historic drilling, we can assess the resource potential with a relatively limited number of new holes," commented Paul Cowley, CEO of Noble Plains. "This not only accelerates our exploration timeline but does so in a capital-efficient manner."

The Company anticipates that with permitting underway, drilling could commence by the end of the third quarter this year. A Wyoming-based drill contractor has been secured, and logistical preparations are underway.

Shirley Basin

The Shirley Basin has produced more than 52 million pounds of U₃O₈ at an average grade of 0.22% between 1960 and 1992-over three times the current U.S. average. As part of Wyoming, the top uranium-producing state in the U.S. and an NRC Agreement State, the Basin benefits from a streamlined permitting environment and longstanding regulatory support for in-situ recovery (ISR) operations.

With ISR now the dominant mining method in Wyoming, Noble Plains' newly optioned claims offer exceptional leverage to modern, low-impact development methods. ISR provides lower capital intensity, minimal surface disturbance, and no tailings, aligning with the Company's commitment to environmentally responsible exploration.

¹Updated Initial Assessment Technical Report Summary on Shirley Basin ISR Uranium Project, Carbon County Wyoming, USA dated March 4, 2024 and prepared by Western Water Consultants, Inc.
² Ur-Energy Announces Decision to Build Out Shirley Basin Mine: Press Release dated March 13, 2024

On Behalf of the Board of Directors,

"Paul Cowley", CEO

"Drew Zimmerman", President

Bradley Parkes, P.Geo., VP Exploration and Director of Noble Plains Uranium Corp., is the Qualified Person as defined in National Instrument 43-101, who has read and approved the technical content of this news release.

This news release includes certain forward-looking statements as well as management's objectives, strategies, beliefs and intentions. Forward looking statements are frequently identified by such words as "may", "will", "plan", "expect", "anticipate", "estimate", "intend" and similar words referring to future events and results. Forward-looking statements are based on the current opinions and expectations of management. All forward-looking information is inherently uncertain and subject to a variety of assumptions, risks and uncertainties, including the speculative nature of mineral exploration and development, fluctuating commodity prices, competitive risks and the availability of financing, as described in more detail in our recent securities filings available at www.sedarplus.com. Actual events or results may differ materially from those projected in the forward-looking statements and we caution against placing undue reliance thereon. We assume no obligation to revise or update these forward-looking statements except as required by applicable law.

Neither the TSX Venture Exchange nor its Regulations Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accept responsibility for the adequacy or accuracy of this release.

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