Manhattan Uranium Identifies 3.70% eU3O8 over 5.2 ft in Compilation of 499 Historical Drill Holes at Lisbon Valley, Utah

Manhattan Uranium Discovery Corp. released a technical update on its Lisbon Valley uranium project in Utah, compiling a modern digital database of 499 historical drill holes on the North Lisbon property. Of the compiled holes, 34% returned mineralization averaging 0.28% eU3O8, a figure comparable to the district's historic production grade of 0.30% U3O8. Additionally, 266 holes, representing 53% of the total, graded above 0.15% eU3O8.

The company has ranked 36 high-priority historical intercepts for follow-up drilling, excluding mined-out ground and intervals near known workings. Key historical gamma intercepts include 3.70% eU3O8 over 5.2 ft (Hole N-1), 0.94% eU3O8 over 5 ft (Hole FW3-3), and 0.93% eU3O8 over 6 ft (Hole FW3-2).

These grades are expressed as equivalent U3O8 (eU3O8) derived from historical downhole gamma-probe measurements rather than chemical assays. The values assume secular equilibrium, though disequilibrium may cause eU3O8 values to overstate or understate true uranium grades. Historical gamma values are not directly comparable to modern chemical assay results and have not been independently verified. Furthermore, reported intervals represent downhole lengths, not true thicknesses.

No current mineral resource or mineral reserve estimate has been established. Next steps include continued validation of historical gamma data, refinement of the lithology model, and recovery of additional historical data.

Manhattan Uranium Discovery Corp. released a routine data compilation update for its I-70, Murmac, and Apex projects, consistent with previous legacy database work announced in July and May-June 2026. The information is expected and incremental, introducing no new chemical assays, independent verification, or defined mineral resource.

Gamma-equivalent data carries inherent limitations, including assumptions of secular equilibrium and a lack of independent verification, which limits its immediate market-moving potential. The market is likely to view this as housekeeping rather than a catalyst, as follow-up drilling and chemical assays are required to validate the gamma data and define economic potential.

The stock has declined approximately 62% from its 52-week high of $0.60, reflecting broader sector weakness and company-specific liquidity concerns.

Manhattan Uranium Discovery Corp. was formed in May 2026 through the court-approved combination of Aero Energy, Urano Energy, and Pegasus Resources. The company holds a portfolio comprising 15 past-producing uranium mines and 25 underexplored U.S. properties totaling 25,099 acres in the Colorado Plateau and Nevada, alongside high-grade exploration potential in Canada's Athabasca Basin.

The firm’s flagship projects include the Lisbon Valley and I-70 properties in Utah, a mill-adjacent district with historic production of approximately 77.9 million pounds of U3O8 and strong infrastructure proximity to Energy Fuels' White Mesa Mill. In Saskatchewan, the Murmac and Strike properties feature Athabasca Basin basement-hosted uranium targets with high-grade historical and recent drill intercepts. Additionally, the Apex project in Nevada, the largest historical uranium producer in the state, has recently been approved for modern drilling.

Manhattan Uranium Discovery’s strategy involves compiling legacy data, defining 3D target domains, and advancing drilling programs to de-risk assets and attract strategic partners or buyers.