Intra Energy Corporation Limited announced the re-assay results from the soil geochemical survey conducted at the Yalgarra Project, in the Murchison region of Western Australia. On 28 November 2022, the Company announced that assay results were received for 11 of the 12 samples from the Yalgarra soil geochemical survey, which were anomalous for lithium with 44 ppm to 62 ppm Li2O. The Company has since re-assayed the results with Labwest's UltraFine+TM technique with results confirming concentrations ranging between 78 ppm and 161 ppm Li2O.

IEC will commence a follow up infill soil sampling following program once the remaining assay results have been received. The first tranche of project-wide Soil Geochemical Sampling that was collected out of a total of two tranches was reported in previous ASX Release dated 28 November 2022. This first tranche of Assay Results identified 12 samples with anomalous lithium concentrations between 44 ppm and 62 ppm Li2O (originally reported as between 20.6ppm & 28.7ppm Li) in Northern Block of the licence.

The majority of the lithium anomalism came from the northeast of the Northern Block within the vicinity of the Hillside Prospect Area from where anomalous copper samples have previously been reported. These samples were re-assayed using Labwest's UltraFine+TM method and the location and magnitude of the anomalous lithium analyses. The geology at the anomalous lithium sample sites was mapped as being thin skeletal soils amongst occasional basement outcrop and subcrop, with potential dilution from residual quartz rich rockchip fragments and windblown quartz sand.

Some of the outcrop included pegmatite intrusives with mega- crystals up to 0.3 metres on the maximum dimension and ranging in colour from cream through to pale green and blue. A decision was made to re-asssay the fine clay fraction (<2um) using Labwests UltraFine+TM method for the following reasons; i) Intertek's AR25/MS52 analytical method was used and it has incomplete recovery of lithium and so existing Lithium anomalism was likely to be higher than reported; ii) strong correlation between Lithium and the suite of LCT related elements was calculated using non- parametric Spearman Correlation Coefficients validating the anomalism as potentially being caused by the LCT pegmatite model; and iii) the geology was skeletal soils (so not directly residual) with potential dilution by fine quartz sand whose dilutionary effect is removed by using the UltraFine+TM method. Only 11 of the 12 anomalous sites were re-assayed with a 1 kilogram unseived sample being collected from between 10 and 20 cm depth from each site in a calico bag and taken back to Perth by the supervising geologist for submission to Labwest.

The results were anomalous, revealing Li2O grades ranging between 78 ppm and 161 ppm along with elevated Cs2O and Rb2O . Research completed by CSIRO and reported on in MRIWA REPORT NO. 462 (Noble,R, et al.

2018) shows that the isolation and analysis of the reactive 2-micron clay fraction, with microwave digestion and using the latest low detection level ICPMS technology, is optimal for soil geochemical programmes as it removes the effects of dilutionary media such as fine sand. Since 2017, CSIRO in conjunction with Labwest has developed an analytical method to isolate and assay this ultrafine (clay) fraction and this has been trademarked as UltraFine+TM. While the Company is waiting on a review of soil sampling results from Yalgarra's Southern Block 14, pegmatite Rockchip Samples have been resubmitted to Intertek for analysis using a fusion method that liberates Lithium bearing minerals that are not completely digested by the standard aqua regia digest.

IEC intends to undertake further field exploration in the first half of 2023, to identify high-priority drill targets for testing in the second half of 2023.