Noble Plains drills 4 feet of 0.5% eU3O8 at Duck Creek

Executive Summary

• Noble Plains Uranium Corp. released results from 20 new drill holes at its flagship Duck Creek project in Wyoming, highlighting the highest-grade uranium intercept recorded to date and confirming continuity within the roll-front system.
• The results demonstrate strong consistency with the company's geological model, with 80% of the new holes meeting or exceeding industry-standard thresholds for In Situ Recovery (ISR)-amenable deposits.
• With approximately two-thirds of the planned drilling program complete, the company aims to deliver its first National Instrument 43-101-compliant uranium resource later in the spring.

Key Details

• Highest-Grade Intercept: Hole 25-21-096 intersected 35.5 feet of 0.202% eU3O8, including a high-grade core of 4.0 feet at 0.501% eU3O8.
• Additional Significant Intercepts:
  • Hole 25-21-095: 26.5 feet of 0.083% eU3O8, including 4.0 feet at 0.144% eU3O8.
  • Hole 25-21-089: 25.0 feet of 0.069% eU3O8, including 4.0 feet at 0.17% eU3O8.
  • Hole 25-21-090: 17.5 feet of 0.09% eU3O8, including 2.0 feet at 0.217% eU3O8.
• Success Rate: 80% of the new holes hit uranium mineralization meeting or exceeding ISR-amenable thresholds.
• Historical Verification: 16 historic holes have been twinned, delivering reproducible results that validate historic drilling data.
• Drilling Program Scope:
  • Permitted for up to 37,400 feet across approximately 150 holes.
  • Objectives: Confirmation of historical data (16 holes), expansion of shallow mineralization (~130 holes), and first-ever drilling of the Fort Union formation (~10 holes).
• Exploration Target: A technical report filed on Aug. 14, 2025, outlined a conceptual exploration target ranging from 2.37 million tons at 0.03% U3O8 to 5.45 million tons at 0.05% U3O8.
• Technical Parameters: Drill results used thickness and grade cut-offs of 2 feet, 0.02% eU3O8, and Grade-Thickness (GT) > 0.2.

Notable Quotes

• Drew Zimmerman, CEO: "The combination of consistent mineralization and a standout 0.50 per cent eU3O8 intercept underscores the quality of the Duck Creek system... We are executing with discipline to convert drill results into future pounds in the ground, positioning Noble Plains to deliver leverage in a U.S. uranium market where secure domestic supply is becoming increasingly critical."
• Paul Cowley, COO: "The highest-grade intercept of the program to date is important because it sits within a long, continuous zone of uranium mineralization, rather than being an isolated hit. This tells us the system is not only extensive, but also capable of hosting higher-grade pockets within that broader trend, exactly what you want to see in an ISR-amenable uranium deposit."