IsoEnergy Ltd.

Data Verification

As part of the Tony M Technical Report, all of the historical data associated with the Tony M Mine was compiled, organized, and entered into a new database by Consolidated Uranium geologists and audited by the author of the Tony M Technical Report for completeness and validity. The data was in the form of collar location, downhole survey, downhole radiometric data, drill hole maps, drill hole logs, chemical assays, drill logs, and reports. This includes data from previous owners Plateau, NFS, and Denison prior to 2022.

Certification of database integrity was accomplished by both visual and statistical inspections comparing geology, assay values, and survey locations cross-referenced to historical paper logs. Any discrepancies identified were corrected by the Consolidated Uranium geologists referring to hard copy assay information or removed from use in the Mineral Resource estimation.

Drilling on the Tony M Mine is the principal method of exploration and delineation of uranium mineralization. Drilling can generally be conducted year-round on the Tony M Mine. The author of the Tony M Technical Report, visited the Tony M Mine on July 7, 2021, accompanied by Ted Wilton (PG, CPG, MAIG) (Consulting Geologist) of Consolidated Uranium. Discussions were held with the Consolidated Uranium technical team and found them to have a strong understanding of the mineralization types and their processing characteristics, and how the analytical results are tied to the results.

Consolidated Uranium supplied the author of the Tony M Technical Report with a series of Microsoft Excel spreadsheets, which included records for collar location, downhole survey, lithology, assay, and radiometric probing from 1,678 drill holes totalling 947,610 feet of drilling, containing 195 chemical assays and 100,926 equivalent U 3 O 8 values covering the Tony M Mine area. Individual CSV files were imported into Leapfrog software, where the author conducted audits of Consolidated Uranium records and a series of verification tests on the drillhole database to assure that the grade, thickness, elevation, and location of uranium mineralization used in preparing the Tony M Resource Estimate aligned with information contained in the previous 2012 resource estimate. Tests included a search for unique, missing, and overlapping intervals, a total depth comparison, duplicate holes, property boundary limits, and verifying the reliability of the %e U 3 O 8 grade conversion as determined by downhole gamma logging.

No significant errors were identified, and the drilling database is suitable for Mineral Resource estimation. In addition, the author reviewed all eight of the 2022 drill holes across the deposit and corresponding laboratory assay certificates and found no discrepancies in the data.

Seven of the eight drill holes drilled by Consolidated Uranium in 2022 encountered uranium mineralization in the “lower rim” of the Salt Wash. The 2022 downhole radiometric results correlated well to the twin holes, in terms of matching lithologic boundaries, however, differences in grade values showed larger variations. The author considers this an acceptable response given the erratic nature of uranium mineralization in this type of low-grade uranium sandstone deposit. The author determined that the results were within a reasonable range to verify the presence and grade of the uranium oxide mineralization on the Tony M Mine property and the use of all the historic values as accurate and true for resource estimation.

The author of the Tony M Technical Report is of the opinion that database verification procedures for the Tony M Mine comply with industry standards and best practices and are adequate for the purposes of Mineral Resource estimation updates.