Fission Uranium Corp. announced scintilometer results from the summer 2021 "resource upgrade" drill program on the R840W zone at its' PLS project, in the Athabasca Basin region of Saskatchewan, Canada. All 25 holes hit mineralization, with nineteen intercepting significant intervals of >10,000 cps radioactivity. This includes PLS21-624 (line 630W), which intersected 57.5m of continuous mineralization, including19.15m of total composite radioactivity >10,000 cps(with a peak of 62,400 cps). Assays are still pending and will be released when received. The goal of the summer resource drilling is to upgrade the majority of the R840W zone by decreasing the spacing between drill hole mineralized intercepts with the goal of upgraded to Indicated classification, for potentialuse in the Feasibility Study. Drilling Highlights:100% Hit Rate; Majority of Holes Hit High-Grades. All 25 holes hit significant mineralization, including 19 with high-grade intercepts. R840W Zone Resource Drilling. The holes successfully targeted specific, mainly "inferred" categorized areas of the R840W zone over ~353m of strike length between holes PLS21-624 and PLS21-631, using step out and infill drilling to achieve spacing of ~15m x 20m (horizontal /vertical), with the aim of conversion from Inferred to Indicated. The R840W zone is the 2nd largest of five high-grade zones that make up the Triple R deposit. Although the R840W has been used in the global resource estimate for the Triple R, due to it currently being mainly Inferred classification, it was not considered in the economic analysis of the Prefeasibility Study. If assay results and subsequent modeling provide confirmation that the desired hole spacing has been achieved and at acceptable grade, then the R840W zone can be upgraded to Indicated and then considered for inclusion into the Feasibility study.