IsoEnergy Ltd.

Data Verification Procedures

The data verification steps of the Qualified Person included site visits during which SLR personnel visited drill hole locations, reviewed drill rig relocation and setup procedures, as well as core handling, logging, sampling, and storage procedures. The SLR QP examined core from several drill holes and compared observations with assay results and descriptive log records made by IsoEnergy geologists. During the drill core review, the SLR QP visually verified the occurrences of uranium mineralization and depth to the unconformity and basement contacts and verified radioactivity levels with an RS-125 hand-held spectrometer. The unconformity contact, scintillometer readings, rock quality designation measurements, and sample tags were observed marked on the wood strip above the drill core.

As part of the data verification procedure, drill data was spot checked and audited by the SLR QP for completeness and validity using standard database validation tests. In addition, the SLR QP reviewed the QA/QC methods and results, verified assay certificates against the database assay table, and completed one site visit including drill core review. No limitations were placed on SLR’s data verification process.