Fission Uranium Corp. announced results from the final thirteen drill holes on the R1515W zone at its PLS property, in Canada's Athabasca Basin region. All holes intercepted wide intervals of mineralization, with nine holes additionally hitting high-grade sections.

Of particular note, PLS24-664 (line 1545W) intersected 6.74m of total composite >10,000 cps in 77.0m of total composite mineralization and PLS24-663 (line 1500W) intersected 5.79m of total composite > 10,000 cps in 50.4m of total composite mineralization. The R1515W upgrade program is now complete. Results will be used to upgrade the resource classification of the zone from mostly inferred to indicated and higher, for potential inclusion in the current mine plan.

The R1515W zone presently contains an Indicated Resource of 67,000 tonnes at an average grade of 1.15% U3O8 totaling 1.7 million lb. U3O8 and an Inferred Resource of 234,000 tonnes at an average grade of 0.96% U3O8 totaling 5 million lb. U3O8, using a cutoff grade of 0.25% U3O8.

The objective of R1515W drilling was to convert areas of the R1515W zone currently classified as Inferred Resources to Indicated Resources through closely spaced drilling, potentially allowing it to be brought into the current mine plan. Drillhole pierce point spacing at the R1515W zone to upgrade the resource classification targeted approximately 25m by approximately 15m, grid north-south by grid east-west, respectively. Additionally, critical geotechnical and hydrogeological information will be collected at the R1515W zone, to be used in the assessment of viability of inclusion in the overall PLS project mine plan and schedule.

Three additional drillholes, PLS24-663, 666 and 668 have been completed on gridline 1500W in 2024, aiming to confirm modeled uranium mineralization in the east-most area of the R1515W zone. PLS24-663 intersected bedrock at a depth of 113.6m, consisting of a 1.5m thin lens of Devonian sandstone underlain by strongly altered orthogneiss to a depth of 197.8m and finally quartz-feldspar gneiss to a final depth of 281.0m. A total of 50.4m of total composite radioactivity >300 counts per second (cps) on handheld scintillometer were intersected in four zones, including a total of 5.79m >10,000 cps.

PLS24-666 was drilled up-dip of PLS24-663 and intersected bedrock at a depth of 115.0m, consisting of strongly altered orthogneiss to 175.1m and footwall quartz-feldspar gneiss to the end of the drillhole at 278.0m. A total of 7.2m of composite radioactivity >300 cps was interested in six zones. PLS24-668 was drilled down-dip of PLS24-663 and intersected bedrock at a depth of 115.3m, consisting of silicified hanging wall to 143.0m, strongly altered orthogneiss to 220.4m and finally quartz-feldspar gneiss footwall to a final depth of 278.0m.

A total of 40.5m of total composite radioactivity >300 cps was intersected in five zones, including 0.25m of >10,000 cps radioactivity. The radioactivity cored in PLS24-663 represents the strongest radioactivity seen on grid line 1500W to date and is open to the east. Two additional drillholes, PLS24-662 and 675 have been completed on grid line 1515W in 2024, aiming to confirm modeled uranium mineralization in the eastern R1515W.

PLS24-662 intersected bedrock at a depth of 124.2m downhole which consisted of a silicified hanging wall underlain by strongly altered orthogneiss and graphitic mylonite and finally footwall quartz-feldspar gneiss, the latter of which continued to a final depth of 359.0m. Thirty-five meters of total composite radioactivity >300 cps on handheld scintillometer were intersected in seven zones between 204.5m and 309.5m, including 0.59m of total composite radioactivity >10,000 cps. PLS24-675 was drilled up-dip of PLS24-652 and intersected bedrock at a depth of 117.1m, consisting of moderate to strongly altered sequence of orthogneisses and quartz-feldspar gneiss, followed by footwall quartz-feldspar gneiss to a final depth of 340.3m.

A total of 50.5m of composite radioactivity >300 cps was intersected in five zones between 119.0m to 242.0m. Radioactivity remains open grid-south of PLS24-662. Three additional drillholes, PLS24-665, 669 and 677 were completed on line 1530W in 2024, targeting modeled uranium mineralization in the central R1515W zone.

PLS24-665 intersected bedrock at a depth of 117.9m and consisted of strongly altered orthogneiss and mylonite followed by variably clay, chlorite and hematite altered footwall quartz-feldspar gneiss to the end of the drillhole at a depth of 345.0m. A total of 61.0m of total composite radioactivity >300 cps was intersected in five zones between 120.0m and 289.0m, including 1.5m > 10,000 cps. PLS24-669 intersected bedrock at a depth of 118.9m and consisted of strongly altered orthogneiss and mylonite followed by variably clay, chlorite and hematite altered footwall quartz-feldspar gneiss to the end of the drillhole at a depth of 377.0m.

A total of 35.0m of total composite radioactivity >300 cps was intersected in five zones between 152.0m and 310.5m, including 0.82m > 10,000 cps. PLS24-677 intersected bedrock at a depth of 104.5m and consisted of strongly altered orthogneiss and quartz-feldspar gneiss followed by variably clay, chlorite and hematite altered footwall quartz-feldspar gneiss to the end of the drillhole at a depth of 290.0m. A total of 30.5m of total composite radioactivity >300 cps was intersected in four zones between 178.0m and 230.5m.

The radioactivity intersected in PLS24-677 remains open to the grid-north. Two additional drillholes, PLS24-664 and 676 were completed on line 1545W in 2024, aiming to confirm line-central and footwall uranium mineralization modeling, respectively.