Radiant Uranium Corp. Outlines Exploration Plan for Cross Lake Property

October 1, 2026 — Leads & Copy — Radiant Uranium Corp. will initiate a fully funded ground exploration program on its 2,048-hectare Cross Lake property in northern Saskatchewan, located southwest of the historic Key Lake Mine. The program aims to confirm previous exploration findings and delineate target areas before planned diamond drilling in the first half of 2027.

The exploration plan includes two phases. Phase 1 will involve ground radiometric surveying and short-hole drilling to verify mineralization extensions and grades. Phase 2 will utilize high-definition induced polarization (IP) surveying to define the geometry and extent of mineralization. Concurrently, Radiant Uranium will begin consultation and permitting processes in preparation for the 2027 drilling campaign.

The estimated budget for Phases 1 and 2, along with consultation and permitting, is approximately $325,000.

Uranium mineralization at Cross Lake is associated with pegmatitic garnetiferous gneiss along a 2.4-kilometer northeast-trending structural lineament. Mineralized zones have been identified at the Narrows, Portage, and Cross uranium showings. Historical work at the Narrows Zone reported mineralization over a true width of 11 to 15.8 meters, with drilling testing the zone to a depth of approximately 75 meters. A 1979 historic estimate outlined 371,038 pounds of U3O8 at an average grade of 1.2435 pounds per tonne to a depth of 75 meters.

Clive Massey, Chief Executive Officer of Radiant Uranium, stated, "With Phases 1 and 2 fully funded, our objective is to systematically build on the historical work at Cross Lake and generate the technical information required to refine priority targets for diamond drilling." He noted that historical drilling tested the Narrows Zone to about 75 meters, while mineralization is linked to a broader 2.4-kilometer structural lineament.

These historical estimates were disclosed in a 1979 report by Rene Bissonnette. The company acknowledges that a qualified person has not sufficiently verified these historical estimates to classify them as current mineral resources or reserves. Radiant Uranium is not treating the historical estimate as current mineral resources or mineral reserves. Twinning of existing drill holes and infill drilling would be necessary to update the historical estimate to a current mineral resource.

The Cross Lake Uranium Project is part of Radiant Uranium’s strategy to build a portfolio with exploration potential in the Athabasca Basin. The company continues to explore additional acquisition opportunities while advancing its existing projects.

Technical information in the news release has been reviewed and approved by Tim Henneberry, P.Geo., a qualified person and a director of the Company.

Radiant Uranium Corp. is a Canadian mineral exploration company focused on uranium assets supporting the global transition to clean energy. Its flagship project, the Cross Lake Uranium Project, is situated within Saskatchewan's Athabasca Basin.

The Company’s common shares trade on the CSE under the symbol RUC, on the OTCQB under the symbol RUCCF, and on the Frankfurt Stock Exchange under the symbol V0O0.