Noble Plains drills 20 feet of 0.2% eU3O8 at Duck Creek

Executive Summary

• Noble Plains Uranium Corp. reported drill results from 20 new holes at its Duck Creek project in Wyoming, bringing the total reported holes to 122 since December 1, 2025.
• The release highlights program-high grade intercepts, including 20.0 feet of 0.207% eU3O8 (including 2.0 feet of 1.05% eU3O8) and 17.5 feet of 0.170% eU3O8 (including 2.0 feet of 0.875% eU3O8), confirming the continuity and improving quality of the roll-front system.
• The company is advancing toward its first NI 43-101 compliant resource in spring 2026 and has expanded its land package to cover over five miles of the trend, supported by geological evidence that mineralization persists and potentially strengthens to the north.

Key Details

• Drill Program Scope: The Duck Creek drill program is permitted for up to 37,400 feet across approximately 150 holes.
• Significant Intercepts:
  • Hole 25-15-115: 20.0 feet of 0.207% equivalent uranium (eU3O8), including 2.0 feet grading 1.05% eU3O8.
  • Hole 25-16-122: 17.5 feet of 0.170% eU3O8, including 2.0 feet at 0.875% eU3O8.
  • Both intercepts exceed the highest grades previously reported in the program and occur within the same continuous roll-front system.
• Geological Context: Results confirm the strength and continuity of the roll-front system along strike. Higher grades are emerging as drilling moves north, providing evidence that the system persists and potentially strengthens toward the company's recently staked northern extension.
• Land Expansion: The company expanded its land position to cover over five miles of the trend, materially increasing the potential scale of uranium mineralization.
• Drilling Objectives:
  1. Confirmation of historic data: 16 holes to verify 1,317 historic intercepts in the Wasatch formation for NI 43-101 resource preparation.
  2. Expansion of shallow mineralization: Approximately 130 holes to extend mineralized boundaries and target higher-grade areas along the three-mile-long Wasatch roll-front corridor.
  3. Fort Union formation testing: Approximately 10 holes drilling to ~1,200 feet to test the Fort Union formation, where neighboring projects host compliant resources.
• Exploration Target: A technical report filed on Aug. 14, 2025, outlined an exploration target ranging from 2.37 million tons at 0.03% U3O8 to 5.45 million tons at 0.05% U3O8. This is conceptual and does not meet NI 43-101 standards for resources/reserves.
• Service Providers: Drilling by Tyler Exploration Inc. (truck-mounted mud rotary rig); geophysical logging by Hawkins CBM Logging. Supervised by Bradley Parkes (VP Exploration) and Paul Cowley (COO).

Notable Quotes

• Drew Zimmerman, CEO: "These new program-high intercepts, alongside the consistency we're seeing across the drilling, show that Duck Creek is not only continuous but improving in quality. This is how a meaningful uranium asset takes shape... As we advance toward our first compliant resource this spring, we are building toward meaningful pounds in the ground with a potential pathway towards production in a supply constrained U.S. uranium market."
• Paul Cowley, COO: "Seeing higher grades emerge as we move north along the trend is very significant... These latest holes were drilled toward the north end of historical trend, and the results are providing strong evidence that the system persists and potentially strengthens to the north where we have recently expanded our land package."