Noble Plains Uranium Drill Program Continues High Success Rate Over Next Sixteen Holes at Duck Creek Project in Wyoming

Rhea-AI Summary

Noble Plains Uranium (OTCQB: NBLXF) reported a second batch of drill results from the Duck Creek Project (Dec 9, 2025) showing an 81% success rate across 16 new holes along a 3-mile Wasatch roll-front corridor. Highlights include intercepts such as 28.5 ft @ 0.08% eU3O8 (hole 25-28-009) and local high Grade-Thickness (GT) 2.28 with an average GT of 0.69. The program is permitted for ~37,400 ft (~150 holes) and targets a NI 43-101 resource in H1 2026. Results are based on calibrated gamma probe eU3O8 readings; assays and deeper Fort Union tests are planned.

Positive

• Drill success rate of 81% over 16 holes
• Intercept: 28.5 ft @ 0.08% eU3O8 (hole 25-28-009)
• Average GT 0.69, >3× industry cut-off of 0.2 GT
• Program permitted for 37,400 ft across ~150 holes
• Targeting NI 43-101 resource estimate in H1 2026
• Exploration target: 2.37–5.45M tons at 0.03–0.05% U3O8

Negative

• Reported grades from eU3O8 gamma probes may misstate true uranium
• Exploration target is conceptual and not a mineral resource
• Shallow water table averages 13 ft, may affect drilling/logging
• No laboratory assay results reported for these holes yet

Key Figures

Drill hole 25-28-009 28.5 ft @ 0.08% eU3O8 Duck Creek Project intercept thickness and grade

High-grade interval 25-28-009 6.0 ft @ 0.179% eU3O8 Higher-grade portion within hole 25-28-009

Average Grade-Thickness 0.69 GT Thirteen of sixteen new holes at Duck Creek

Industry GT cut-off 0.2 GT Typical cut-off for Wyoming roll-front uranium deposits

Exploration target (low) 2.37 million tons @ 0.03% U3O8 Conceptual lower-case target from Technical Report

Exploration target (high) 5.45 million tons @ 0.05% U3O8 Conceptual upper-case target from Technical Report

Drill program scale 37,400 ft across ~150 holes Permitted Duck Creek drill program

Water table depth 5–33 ft (avg 13 ft) First 24 holes at Duck Creek

Market Reality Check

$0.1058 Last Close

Volume Volume 163,936 is 62% above the 20-day average of 101,267. high

Technical Price 0.10585 is trading above the 200-day MA at 0.09 while still 52.85% below the 52-week high.

Peers on Argus

While NBLXF was up 3.3%, peers were mixed: notable declines in TCEFF -10.26% and NVTQF -90.96%, with modest gains in STTDF +4.9% and SUUFF +1.64%, pointing to a stock-specific reaction.

Historical Context

Date	Event	Sentiment	Move	Catalyst
Dec 09	Drill results update	Positive	+2.1%	Second batch of Duck Creek drill results with 81% success rate.
Dec 01	Initial drill results	Positive	+3.1%	First eight Duck Creek holes with strong GT and 87% hit ratio.
Nov 25	Drill permit	Positive	-9.2%	Receipt of 37,400-foot drill permit and program commencement.
Nov 03	CEO appointment	Positive	+1.0%	New CEO appointed with former CEO moving to COO role.
Oct 08	Board appointment	Positive	-8.6%	Veteran uranium geologist added to the Board of Directors.

Pattern Detected

Drill and operational news often saw positive price alignment, while some permitting and board changes coincided with sharp downside, indicating mixed reactions to corporate developments.

Recent Company History

Over the last few months, Noble Plains advanced its Duck Creek uranium project from permitting to active drilling. A drill permit for a 37,400-foot program (Nov 25, 2025) preceded initial results on Dec 01 showing an average GT of 1.0, followed by a second batch on Dec 09 with an 81% success rate and average GT of 0.69. Management changes on Nov 03 and a board appointment on Oct 08 strengthened technical leadership. The current news continues this sequence of positive drilling milestones toward a NI 43‑101 resource.

Market Pulse Summary

This announcement reported an 81% success rate over sixteen new holes at Duck Creek with an average 0.69 GT, above the 0.2 GT cut-off typically cited for Wyoming roll-front deposits. It builds on earlier 2025 results within a permitted 37,400‑ft program and supports the goal of a NI 43‑101 resource estimate targeted for the first half of 2026. Key factors to watch include ongoing drill batches, initial Fort Union tests, and how conceptual exploration targets translate into compliant resources.

Key Terms

grade-thickness technical

"a high of 2.28 Grade-Thickness ("GT") and an average of 0.69 GT"

Grade-thickness is a single number that combines how rich a mineral zone is (the concentration of valuable material) with how wide that zone is, calculated by multiplying grade by thickness. For investors, it gives a quick sense of how much potential value a drill intercept or ore body may contain—similar to knowing both how sweet and how thick a slice of cake is when judging how much sugar you'll get from it—helping compare results across projects and guide valuation or exploration decisions.

roll-front technical

"typically used in Wyoming roll front uranium deposits"

A roll-front is a crescent-shaped concentration of minerals, most commonly uranium, formed where oxygen-rich and oxygen-poor groundwater meet and trigger chemical reactions that deposit metal in porous rock. For investors, roll-fronts matter because their shape, depth and mobility influence how easy and cheap the deposit is to find, extract and permit — affecting resource size, production costs and environmental or regulatory risk in mining projects.

National Instrument 43-101 regulatory

"support a uranium resource prepared in accordance with National Instrument 43-101 standards"

National Instrument 43-101 is a set of rules and guidelines that govern how mineral exploration and mining companies must report information about their projects. It ensures that the details shared with investors are accurate, consistent, and reliable—similar to how a detailed, verified blueprint ensures a building’s safety. This helps investors make informed decisions based on trustworthy information about a company's mineral resources.

gamma-ray technical

"based on equivalent uranium (eU3O8) of the gamma-ray probes calibrated"

An extremely high-energy form of light produced by radioactive decay, nuclear reactions or cosmic processes, gamma rays are like the most energetic beams on the electromagnetic spectrum and can penetrate materials that ordinary light cannot. Investors care because gamma rays are central to medical imaging and cancer treatment devices, nuclear power and safety monitoring, and certain satellite and security technologies; changes in regulation, technology or demand can directly affect companies that make or use these systems.

spontaneous potential technical

"A geophysical tool with gamma-ray, spontaneous potential, resistivity, and drift detectors"

Spontaneous potential is a natural electrical voltage measured in wells or across underground layers that arises from differences in fluid chemistry and rock properties. Investors care because these signals help geologists spot porous, fluid-filled rocks or sealing layers—information that affects estimates of oil, gas, or groundwater presence and the likely cost and success of drilling, much like a metal detector giving clues about what’s beneath the surface.

resistivity technical

"gamma-ray, spontaneous potential, resistivity, and drift detectors was utilized"

Resistivity measures how strongly a material opposes the flow of electric current; low resistivity means electricity flows easily, high resistivity means it does not. For investors, resistivity affects the value and suitability of materials used in electronics, power lines, batteries, and sensors—think of it like how narrow or wide a pipe affects water flow: materials with the ‘right’ resistivity can improve product performance, reduce energy losses, or open market opportunities, while the wrong resistivity can limit demand or require costly processing.

geophysical logging technical

"and the geophysical logging by Hawkins CBM Logging, both of Wyoming"

Geophysical logging is the process of lowering instruments into a drilled well or borehole to measure physical properties of the surrounding rock and fluids, essentially taking a detailed subsurface “scan.” Investors use these measurements to judge whether a site likely contains recoverable oil, gas, minerals or geothermal heat, to estimate how much can be extracted and how hard or costly extraction will be, which helps reduce technical and financial risk.

AI-generated analysis. Not financial advice.

Vancouver, British Columbia--(Newsfile Corp. - December 9, 2025) - Noble Plains Uranium Corp. (TSXV: NOBL) (OTCQB: NBLXF) (FSE: INE0) ("Noble Plains" or the "Company") a U.S. focused uranium exploration and development company, is pleased to announce the second set of drill results, with a continued success rate of 81% over the next sixteen drill holes completed at its flagship Duck Creek Project in Wyoming's Powder River Basin. Today's drill results build on the strong initial results released on December 1, 2025, confirming a geological trend with strong potential, being proven by efficient and cost-effective drilling.

"These continuing positive results highlight exactly why we moved quickly at Duck Creek," said Drew Zimmerman, CEO of Noble Plains. "We are consistently intersecting strong mineralisation along a 3-mile corridor, reinforcing our conviction that this is an asset capable of delivering real leverage to the uranium market. We are focused on converting historical work into updated pounds in the ground efficiently to build a resource located between two of the largest uranium producers in North America. Momentum is building, confidence is rising, and we believe Duck Creek has the makings of a top-tier asset."

Of special note, hole 25-28-009 intersected 28.5 feet of 0.08% eU308, including 6 feet of 0.18% eU308; hole 25-28-010 intersected 29.0 feet 0.043% eU308, including 4.5 feet of 0.10% eU308; and hole 25-28-24 intersected 13 feet of 0.07% eU308, including 8 feet of 0.10% eU308.

Table 1: Drill Intercept Highlights

Hole ID	Easting (m)	Northing (m)	Hole Depth (ft)	From (ft)	To (ft)	Length (ft)	Grade (% eU3O8)*
25-28-009	448,983	4,777,844	220	119.5	148.0	28.5	0.080
25-28-010	448,997	4,777,870	220	117.0	146.0	29.0	0.043
25-28-011	448,929	4,777,780	240	119.5	125.0	5.5	0.037
25-28-013	448,916	4,777,722	220	89.5	93.5	4.0	0.066
25-28-014	448,923	4,777,637	220	116.5	127.0	10.5	0.075
25-28-015	448,927	4,777,664	220	77.0	85.5	8.5	0.045
25-28-016	448,910	4,777,585	220	135.5	154.0	18.5	0.024
25-28-017	448,892	4,777,589	220	89.0	111.0	22.0	0.036
25-28-018	448,896	4,777,551	220	117.5	139.5	22.0	0.023
25-28-019	449,143	4,777,962	220	6.5	32.5	26.0	0.025
25-28-021	449,117	4,778,023	200	6.0	10.5	4.5	0.091
25-28-023	449,096	4,778,056	200	121.5	134.5	13.0	0.017
25-28-024	449,106	4,778,099	200	6.0	19.0	13.0	0.070

 

Including:

Hole ID	Easting (m)	Northing (m)	Hole Depth (ft)	From (ft)	To (ft)	Length (ft)	Grade (% eU3O8)*
25-28-009	448,983	4,777,844	220	121.0	127.0	6.0	0.179
25-28-010	448,997	4,777,870	220	120.0	124.5	4.5	0.101
25-28-014	448,923	4,777,637	220	119.5	125.0	5.5	0.126
25-28-017	448,892	4,777,589	220	91.5	98.5	7.0	0.055
25-28-018	448,896	4,777,551	220	81.0	85.0	4.0	0.095
25-28-019	449,143	4,777,962	220	6.5	32.5	14.0	0.031
25-28-024	449,106	4,778,099	200	10.0	18.0	8.0	0.103
* All of the holes drilled are vertical and the geological units are essentially flat so that intercept widths are interpreted to be true thickness. The water table in the first 24 holes ranges from a depth of 5 feet to 33 feet and averages 13 feet deep.

 

"The second set of results demonstrate the continuity and strength of the roll-front system we are defining in an area we had no drill data before," said Paul Cowley, COO of Noble Plains Uranium. "We are getting very solid numbers; nice thicknesses and good grade in these holes. Thirteen of the sixteen new holes intersected uranium mineralisation with a high of 2.28 Grade-Thickness ("GT") and an average of 0.69 GT, which is over three times the industry standard cut-off of 0.2 GT typically used in Wyoming roll front uranium deposits."

The Company filed a Technical Report, available on SEDAR under the Company's profile, on the Duck Creek Project on August 14, 2025, which outlined an exploration target ranging from 2.37 million tons at 0.03% U₃O₈ to 5.45 million tons at 0.05% U₃O₈. These ranges were based on assumed Grade-Thickness ("GT") values of 0.2 for the lower case and 0.598 for the upper case. The exploration target is conceptual in nature, does not meet the standards to be classified as mineral resources or mineral reserves, and there is no certainty that the exploration target will be realized.

Figure 1 shows the location of the sixteen new holes in red with first eight holes in blue within the 3-mile-long trend of historic drilling. These first twenty-four holes are part of the 130 planned "expansion" holes referred to under the Ongoing Drill Program Overview section below.

Figure 1 - New Drillhole Locations

To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/3717/277404_16db3d56c4f3a9b8_001full.jpg

Ongoing Drill Program Overview

The Duck Creek drill program, permitted for up to 37,400 ft across ~150 holes, is structured around three key objectives:

1. Confirmation of Historic Data - 16 Holes

To verify 1,317 historic intercepts in the Wasatch Formation and support a uranium resource prepared in accordance with National Instrument 43-101 standards.

2. Expansion of Shallow Mineralisation ~ 130 Holes

Designed to extend mineralised boundaries and target higher-grade areas along the 3-mile-long Wasatch roll-front corridor.

3. First-Ever Drilling of the Fort Union Formation ~ 10 Holes

For the first time, Noble Plains will drill to ~1,200 ft to test the Fort Union, where neighbouring projects host the majority of their compliant resources.

Details of the Drilling Program

* The geophysical results are based on equivalent uranium (eU3O8) of the gamma-ray probes calibrated at the Department of Energy's Test Facility in Casper, Wyoming. A geophysical tool with gamma-ray, spontaneous potential, resistivity, and drift detectors was utilized. The reader is cautioned that the reported uranium grades may not reflect actual concentrations due to the potential for disequilibrium between uranium and its gamma emitting daughter products. The drill results were determined using thickness and grade % cutoffs of 2-ft and 0.02% eU3O8.

The drilling was completed by Tyler Exploration Inc. utilizing a truck mounted mud-rotary rig and the geophysical logging by Hawkins CBM Logging, both of Wyoming. Bradley Parkes P.Geo, VP Exploration and Paul Cowley P.Geo, Chief Operating Officer for Noble Plains Uranium Corp., supervised the drilling activities.

Next Steps and Outlook

Drilling is ongoing and the Company will continue releasing results in batches to maintain transparency and demonstrate progress as the confirmation and expansion phases advance. The first deep Fort Union tests are planned for later in the program.

With the results of the ongoing drill campaign, along with the historic database, the Company continues to aim for a resource estimate prepared in accordance with National Instrument 43-101 standards in the first half of 2026.

About Noble Plains Uranium

Noble Plains Uranium Corp. is a U.S.-focused uranium exploration and development company advancing a portfolio of high-potential projects amenable to In Situ Recovery (ISR) - the most capital-efficient and environmentally responsible method of uranium extraction. Our strategy targets historically drilled and underexplored assets in proven jurisdictions, with the objective of rapidly delineating NI 43-101 compliant resources and building a scalable inventory of domestic uranium.

On Behalf of the Board of Directors,

"Drew Zimmerman", CEO & President

For further information, please contact: Drew Zimmerman: (778) 686-0973
Website: www.nobleplains.com

Bradley Parkes, P.Geo., VP Exploration 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 include, but are not limited to, statements regarding the planned drill program, the timing of drilling and results, the potential to outline a uranium resource prepared in accordance with National Instrument 43-101 standards, the potential to confirm or expand mineralisation, and the potential of the Duck Creek Project to become a significant uranium asset. 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 but not limited to: the Company's ability to complete the drill program as planned, the interpretation of historic data, the accuracy of geological modelling, the results of drilling and downhole probing, operational risks and weather delays, regulatory approvals, availability of equipment and personnel, the speculative nature of mineral exploration and development, and fluctuating commodity prices, as described in more detail in our recent securities filings available at www.sedarplus.ca. 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.

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/277404

FAQ

What did Noble Plains (NBLXF) report on Dec 9, 2025 from Duck Creek drilling?

A second batch of results showing an 81% success rate across 16 holes and multiple intercepts, based on calibrated eU3O8 geophysical logs.

Which notable intercepts did Noble Plains report at Duck Creek (NBLXF)?

Highlights include 28.5 ft @ 0.08% eU3O8 (hole 25-28-009), 29.0 ft @ 0.043% eU3O8 (25-28-010), and local GT high 2.28.

How will the Dec 2025 Duck Creek results affect Noble Plains' (NBLXF) resource timeline?

Results support ongoing confirmation and expansion drilling as the company aims for a NI 43-101 resource estimate in H1 2026.

Are the reported grades from Noble Plains (NBLXF) final assay results?

No; reported grades are equivalent uranium (eU3O8) from gamma probes and the company cautions they may not reflect lab assays.

What is the scale of Noble Plains' Duck Creek drill program (NBLXF)?

The program is permitted for roughly 37,400 ft of drilling across about 150 holes, including deeper Fort Union tests.