Mr. Dev Randhawa reports

F3 HITS ANOMALOUS RADIOACTIVITY 12KM SOUTH OF JR ZONE ON BROACH PROPERTY

F3 Uranium Corp. has released initial scintillometer results from the continuing winter drill programs at the PLN (Patterson Lake North) and Broach properties, including drilling at JR zone, B1 and the PW area. At Broach Lake, a new prospective area, PW, is emerging, where exploration drill hole PLN25-202 encountered six distinct zones of anomalous radioactivity, with readings ranging between 300 counts per second (cps) and 720 cps over a 90-metre (m) downhole interval. At JR zone, PLN25-200 returned mineralization over 20.0 m, including 2.25 m of high-grade (more than 10,000 cps) containing 0.68 m of off-scale mineralization (more than 65,535 cps).

2025 hand-held spectrometer highlights

PLN -- JR zone:

• PLN25-198 (line 090S):
  • 6.5 m interval with mineralization between 214.5 and 223.0 m, including:
    • 0.20 m high-grade radioactivity (more than 10,000 cps) between 220.65 and 220.8 five m;
  • 1.5 m interval with mineralization between 228.5 and 230.0 m;
• PLN25-200 (line 045S):
  • 1.0 m interval with mineralization between 229.0 and 230.0 m;
  • 19.0 m interval with mineralization between 233.0 and 252.0 m, including 2.25 m high-grade composite radioactivity (more than 10,000 cps) between 236.0 and 238.75 m;
• PLN25-202 (line 11325S):
  • 0.5 m interval with radioactivity between 272.5 and 273.0 m;
  • 0.5 m interval with radioactivity between 275.5 and 276.0 m;
  • 0.5 m interval with radioactivity between 296.0 and 296.5 m;
  • 0.5 m interval with radioactivity between 321.0 and 321.5 m;
  • 0.5 m interval with radioactivity between 359.5 and 360.0 m;
  • 0.5 m interval with radioactivity between 362.5 and 363.0 m.

Broach Lake -- PW area:

• PLN25-202 (line 11325S):
  • 0.5 m interval with radioactivity between 272.5 and 273.0 m;
  • 0.5 m interval with radioactivity between 275.5 and 276.0 m;
  • 0.5 m interval with radioactivity between 296.0 and 296.5 m;
  • 0.5 m interval with radioactivity between 321.0 and 321.5 m;
  • 0.5 m interval with radioactivity between 359.5 and 360.0 m;
  • 0.5 m interval with radioactivity between 362.5 and 363.0 m.

B1 conductor:

• PLN25-196 (line 2835S):
  • 0.5 m interval with radioactivity between 336.5 and 367.0 m.

Sam Hartmann, vice-president of exploration, commented:

"The PW area, situated on the Broach property approximately 12 kilometres south of the JR zone, lies just within the Athabasca basin and represents a region with minimal historical exploration and drilling activity. No previously defined conductors had been identified in this area, largely due to the presence of a thick layer of conductive Cretaceous mudstone from the Manville Group, which locally reaches thicknesses of nearly 100 metres. Recognizing the potential of this challenging but underexplored region, we conducted a specifically designed MLTDEM ground survey (see news release, Feb. 11), which has just been completed by Abitibi Geophysics. This approach successfully delineated a number of basement-hosted conductors on the survey lines interpreted so far with lines L3200N to L4400N still outstanding, overcoming the interference posed by the conductive mudstones. Drill hole PLN25-202 was collared based on an initial interpretation and conductor model on L1600N and intersected strongly altered basement lithologies, encountering six distinct radioactive intercepts across a 90-metre downhole interval. Data from this drill hole was subsequently reintegrated back into the electromagnetic (EM) model, which resulted in a lateral shift of the conductor model by approximately 100 metres. This adjustment suggests that PLN25-202 overshot the intended target yet still encountered significant alteration and structures along with radioactivity. A follow-up drill hole is scheduled and planned to step back by approximately 100 metres to better intersect the refined target, which lies in a distinct circular gravity anomaly. While the PW area is still in its early stages of exploration, we are highly encouraged by these strong initial results and intend to conduct further drilling in the area before shifting focus back to the JR zone toward the conclusion of the winter season."

The natural gamma radiation detected in the drill core, as detailed in this news release, was measured in counts per second using a hand-held Radiation Solutions RS-125 spectrometer. The company designates readings exceeding 300 cps on the hand-held spectrometer (occasionally referred to as a scintillometer in industry parlance; this colloquial usage stems from historical naming conventions and the shared functionality of detecting gamma radiation with a scintillometer), as anomalous, readings above 10,000 cps as high grade and readings surpassing 65,535 cps as off-scale. However, readers are cautioned that spectrometer or scintillometer measurements often do not directly or consistently correlate with the uranium grades of the rock samples and should be regarded solely as a preliminary indicator of the presence of radioactive materials.

Samples from the drill core are split into half sections on site. Where possible, samples are standardized at 0.5 m downhole intervals. One-half of the split sample is sent to SRC Geoanalytical Laboratories (an SCC ISO/IEC 17025: 2005-accredited facility) in Saskatoon, Sask., while the other half remains on site for reference. Analysis includes a 63-element suite, including boron by ICP-OES (inductively coupled plasma optical emission spectroscopy), uranium by ICP-MS (inductively coupled plasma mass spectrometry), and gold analysis by ICP-OES and/or AAS (atomic absorption).

The company considers uranium mineralization with assay results of greater than 1.0 weight per cent U3O8 as high grade and results greater than 20.0 weight per cent U3O8 as ultrahigh grade.

All depth measurements reported are downhole and true thicknesses are yet to be determined.

About the Patterson Lake North project

The company's 42,961-hectare 100-per-cent-owned Patterson Lake North (PLN) project is located just within the southwestern edge of the Athabasca basin in proximity to Paladin's Triple R and NexGen Energy's Arrow high-grade uranium deposits, an area poised to become the next major area of development for new uranium operations in Northern Saskatchewan. The PLN project consists of the 4,074-hectare Patterson Lake North property, the 19,864-hectare Minto property and the 19,022-hectare Broach property. All three properties comprising the PLN project are accessed by Provincial Highway 955; the new JR zone uranium discovery on the PLN property is located 23 kilometres northwest of Paladin's Triple R deposit.

Qualified person

The technical information in this news release has been prepared in accordance with the Canadian regulatory requirements set out in National Instrument 43-101 and approved on behalf of the company by Raymond Ashley, PGeo, president and chief operating officer of F3 Uranium, a qualified person. Mr. Ashley has verified the data disclosed.

About F3 Uranium Corp.

F3 Uranium is a uranium exploration company, focusing on the recently discovered high-grade JR zone on its PLN project in the western Athabasca basin. F3 Uranium currently has three properties in the Athabasca basin: Patterson Lake North, Minto and Broach. The western side of the Athabasca basin, Saskatchewan, is home to some of the world's largest high-grade uranium deposits, including Paladin's Triple R and Nexgen's Arrow.

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