Announcement PDF ASX Announcement 18 June 2024 Exploration Update Oblique RC Drilling Confirms the Continuity of Wide Oxide Mineralisation within the OBL01 Structure, and Further Extends Mineralisation to the North • All assay results have been received from the RC drilling program completed across the Oblique Prospect in 2024 as part of a larger 4,500m RC and 2,800m diamond drilling program. • The results confirm the continuity of broad and higher-grade mineralisation associated with the OBL01 structure at the Oblique Prospect: o o 28m @ 1.1 g/t Au from 50m (24IWBRC0012),  including 4m @ 3.3g/t Au from 51m and  4m @ 2.1g/t Au from 71m 9m @ 1.8/t Au from 34m (24IWBRC0011),  • RC drilling has again extended oxide mineralisation 150m to the north at Oblique with: o o • including 1m @ 10.2g/t Au from 34m 7m @ 0.9 g/t Au from 47m (24IWBRC0018), 3m @ 1.4 g/t Au from 73m (24IWBRC0018), These results are in addition to initial results (reported 29tt of April 2024) from the north of Oblique suggestive of another mineralised structure and include: o 15m @ 1.7g/t from 74m (24IWBRC0002)  including 3m @ 5.3g/t Au from 79m • The diamond drilling program at Oblique is progressing well. Four of five diamond holes are complete, and the first diamond core samples will be dispatched for analysis this week. Initial diamond logging has identified numerous intervals of interest, with several different styles of veining and alteration observed. • Quarter Moon RC drilling results are expected in late June. For further information or to ask questions in relation to this announcement, please visit our Investor Hub at https://investorhub.yandalresources.com.au/link/mPqm8P Contact Us A: Level 1 Unit 5/62 Ord Street, West Perth WA 6005 T: +61 (0)8 9389 9021 E: yandal@yandalresources.com.au yandalresources.com.au | ASX:YRL Board and Management Tim Kennedy Managing Director/CEO Greg Evans Non-Exec Chairman Katina Law Non-Exec Director Chris Oorschot Technical Director Greg Fitzgerald Company Secretary Commenting on the new results, Yandal Resources’ Technical Director, Mr Chris Oorschot, said: “The latest round of Oblique RC results are very encouraging. Closer spaced drilling within and to the south of the OBL01 structure has confirmed the interpreted geometry and mineralisation continuity of the structure. RC drilling results from the north of Oblique build on the 15m @ 1.7g/t result from late April, displaying similar geological characteristics to the OBL01 structure 500m to the south. While we were receiving these results, diamond drilling has been progressing well, with the team focused on collecting detailed information concerning stratigraphy, structure, alteration and geological timing relationships that will provide invaluable context to assay results and allow an effective evaluation of the Oblique Prospect’s broader potential. The Yandal exploration team is well placed to realise larger-scale discovery opportunities across the Ironstone Well-Barwidgee Gold Project as we head into the second half of 2024 with the ongoing diamond drilling program, combined with some exceptional conceptual targets derived from the recently acquired ground gravity data and the soon to be received regional soil results.” Yandal Resources Ltd (ASX: YRL, “Yandal Resources” or the “Company”) is pleased to advise that it has received all assay results from the eighteen holes completed across the Oblique Prospect, part of a larger 4,500m program across both the Oblique and Quarter Moon Prospects. The Oblique and Quarter Moon (E 53/1882) Prospects form part of the broader Ironstone Well– Barwidgee (IWB) Gold Project (see Figure 8). In addition to drilling results, the Company has completed four of five diamond holes across the Oblique Prospect. The first batch of diamond core samples is scheduled to be dispatched to the lab for analysis this week. The Company is well-funded and focused on making significant gold discoveries on its portfolio of highly prospective 100% owned gold projects in the Yandal and Norseman-Wiluna Greenstone Belts in Western Australia. RC Drilling Results The 2024 Oblique RC program comprised 2,450m of drilling for a total of 18 holes (including five diamond pre-collars with 516m drilled). Results from all RC holes have been received. The holes were designed to identify OBL01 parallel structures to the north, then test the continuity and extend drilling within the OBL01 mineralised structure (see Figure 1). RC drilling was successful in achieving both objectives. Significant intercepts are summarised below, illustrated in Figures 1 to 6 below, and listed in Tables 1 and 2 at the end of this document. yandalresources.com.au | ASX:YRL 2 Drilling to the north of Oblique has confirmed an OBL01-like structure up to 650m from any previous drilling completed by the Company in 2023. Notable intercepts include: • 15m @ 1.7 g/t Au from 74m in 24IWBRC0002 (Figure 3) (previously reported on the 29tt of April 2024) o including 3m @ 5.3g/t Au from 79m And • 7m @ 0.9 g/t Au from 47m (Figure 4) and • 3m @ 1.4 g/t Au from 73m both from 24IWBRC0018, These results suggest that mineralisation is associated with a dextral offset in stratigraphy (based on historic surface mapping) and the core of the large-scale magnetic anomaly coincident with the prospect (See Figure 1). RC drilling within and to the south of the OBL01 structure resulted in several intercepts, including: • 28m @ 1.1 g/t Au from 50m in 24IWBRC0012 (Figure 6) o o including 4m @ 3.3g/t Au from 51m and 4m @ 2.1g/t Au from 71m This result extends oxide mineralisation 50m south of the previously reported: • 24m @ 1.8g/t Au from 60m in YRLRC1177 (previously reported on the 12tt of January 2024) Results such as: • 9m @ 1.8/t Au from 34m in 24IWBRC0011 (Figure 5) o including 1m @ 10.2g/t Au from 34m • 7m @ 0.8g/t Au from 20m, and • 4m @ 1.3g/t Au from 76m in 24IWBRC0011 (a vertical hole) confirm mineralisation continuity within the interpreted OBL01 structure, which is associated with a wide interval of oxidised and deformed quartz veining and/or microcrystalline chert with evidence of strong alteration, including sulphide alteration (now oxidised). The results build on previous RC drilling completed in October 2023 (see ASX releases of 25 October 2023, 12 January 2024, and 29 April 2024). Once the diamond drilling phase of the program testing the broader mineralised system at Oblique has been completed (refer to section below), our mineralisation model for the prospect will be updated, and further drill testing is planned. yandalresources.com.au | ASX:YRL 3 Oblique Diamond Drilling Diamond drilling commenced on May 24th at the Oblique Prospect and underpins the Company’s strategy to understand the broader potential of the Oblique mineralised system. Four of five planned diamond holes have been completed, which will test the stratigraphy and structures along an 800m strike length, providing invaluable insights into the structural, stratigraphy, and alteration styles across Oblique. Figure 2 highlights the projected pierce points of diamond drilling within the OBL01 structure. Preliminary logging indicates that the stratigraphy is dominated by a bimodal sequence of variably altered fine-grained andesite and an intermediate tuff characterised by medium to coarse-grained volcanic laths. Several different styles of structure and alteration have been observed, including: • Altered and sulphide-bearing shear zones (figure 7A), • Deformed quartz veining (Figure 7B), • Massive to semi-massive pyrite dominant sulfides typically adjacent to or containing quartz veining and/or microcrystalline cherts. Equivalent sulphide alteration has been observed in RC drilling previously and is typically correlated with low-level anomalous gold values only (figure 7C). Samples from the first diamond hole are being cut and sampled and scheduled to be dispatched for analysis this week. Next Steps The diamond rig is likely to finish at Oblique in the next week. It will then move to the Quarter Moon Prospect before mobilising down to the New England Granite Prospect to complete two co-sponsored Exploration Incentive Scheme (EIS) holes in late June through early July. Follow-up drilling at Oblique is being assessed and will be finalised and scheduled once all diamond core results have been received. yandalresources.com.au | ASX:YRL 4 15m @ 1.7 g/t Au Incl. 3m @ 5.3 g/t Au 24IWBRD0005 24IWBRD0009 7m @ 0.9 g/t Au 24IWBRD0013 24IWBRD0014 24IWBRD0016 5m @ 1.0 g/t Au 9m @ 1.8g/t Au Incl. 1m @ 10.4g/t Au 7m @ 1.2 g/t Au 28m @ 1.1 g/t Au Incl. 4m @ 3.3g/t Au & 4m @ 2.1g/t Au Figure 1: A Collar plan for the Oblique Prospect displaying all drilling collars, colour-coded by max Au in hole (g/t Au), overlying a composite aerial magnetic image e (RTP 1VD non-linear and RTP 2VD non-linear). Diamond pre-collars and section/longitudinal section positions are labelled. yandalresources.com.au | ASX:YRL 5 Figure 2: Longitudinal section, southwest facing, showing intercepts within the OBL01 structure and thematically contoured by grade (g/t Au) multiplied by down-hole width (m). The planned position of diamond hole pierce points within the OBL01 structure are also shown. yandalresources.com.au | ASX:YRL 6 SW NE Surface 7m @ 0.9 g/t Au 3m @ 1.4 g/t Au BOCO TOFR Figure 3: Cross-section A, showing RC drilling results from 24IWBRC0007 and 24IWBRC0018, with a preliminary interpretation of mineralisation. The location of section A is referenced in Figure 1. yandalresources.com.au | ASX:YRL 7 SW NE Surface 3m @ 1.5 g/t Au 15m @ 1.7 g/t Au Incl. 3m @ 5.3 g/t Au TOFR Figure 4: Cross-section B, showing RC drilling results from 24IWBRC0001 and 24IWBRC0002 (previously reported in April 2024), with a preliminary interpretation of mineralisation. The location of section B is referenced in Figure 1. yandalresources.com.au | ASX:YRL 8 SW NE 24m @ 1.8 g/t Au Surface 5m @ 1.0 g/t Au OBL01 Structure 16m @ 0.4 g/t Au BOCO TOFR 7m @ 1.2 g/t Au 9m @ 1.8g/t Au Incl. 1m @ 10.4g/t Au 2m @ 5.8 g/t Au Figure 5: Cross-section C, showing RC drilling results from 24IWBRC0011 and YRLRC1177 (previously reported in January 2024), with a preliminary interpretation of mineralisation. The trace of the recently completed diamond hole 24IWBRD0013 is also plotted on the section (not yet sampled) The interpreted OBL01 structure is labelled in the section. The location of section B is referenced in Figure 1. yandalresources.com.au | ASX:YRL 9 SW NE Surface 12m @ 1.2 g/t Au 28m @ 1.1 g/t Au Incl. 4m @ 3.3g/t Au & 4m @ 2.1g/t Au OBL01 Structure 9.1m @ 0.9 g/t Au TOFR 25m @ 0.6 g/t Au Figure 6: Cross-section D, showing RC drilling results from 24IWBRC0012 and 24IWBRC0002 (previously reported in April), with a preliminary interpretation of mineralisation. The interpreted OBL01 structure is labelled in the section. The location of section B is referenced in Figure 1. yandalresources.com.au | ASX:YRL 10 A 24IWBRD0005 207m B 24IWBRD0005 291.7m C 24IWBRD0009 circa 286m to 289.5m Figure 7: A. An example of an altered shear zone within NQ2 core 24IWBRD0005. B. An example of a deformed and altered early quartz veining within NQ2 core from 24IWBRD0005. C An example of massive to semi-massive sulphide (pyrite dominant) intercalated with narrow quartz veins and/or micro-crystalline chert within NQ2 core from 24IWBRD0009. yandalresources.com.au | ASX:YRL 11 Oblique Flushing Meadows Quarter Moon New England Granite Figure 8: The Ironstone Well / Barwidgee Project overview shows the outline of YRL tenure, regional interpreted bedrock geology, and the location of prospects discussed in this report. The red circle with a 5km radius highlights the proximity between the Flushing Meadows Deposit and the Oblique and Quarter Moon Prospects. yandalresources.com.au | ASX:YRL 12 Looking Ahead The Company has a very active CY 2024 planned with priority exploration activities, including; 1. Regional soil sampling results are anticipated shortly and will be released once these large datasets have been processed and a preliminary interpretation completed; 2. Receiving RC results for the Quarter Moon prospect in the latter half of June, 3. The completion of diamond drilling at Oblique and the start of diamond drilling at the Quarter Moon Prospect, with initial assay results expected in early July; 4. The mobilisation of the diamond rig to the New England Granite Prospect in late June to early July. 5. An assessment of historical exploration work across the recently identified conceptual targets, including the Caladan Fold and Irulan Dolerite Complex, derived from the 2024 ground gravity survey across the Ironstone Well-Barwidgee Gold Project, is underway (see ASX announcement dated 11 June 2024). Authorised by the board of Yandal Resources For further information, please contact: Tim Kennedy Managing Director Yandal Resources Limited yandal@yandalresources.com.au yandalresources.com.au | ASX:YRL Greg Fitzgerald Company Secretary +61 8 9389 9021 yandal@yandalresources.com.au 13 About Yandal Resources Limited Yandal Resources has a portfolio of advanced gold exploration projects in the highly prospective Yandal and Norseman-Wiluna Greenstone Belts of Western Australia. Yandal Resources’ gold project locations. Yandal Resources Ltd - Mineral Resource Summary Indicated Inferred Deposit Tonnes Grade Au Tonnes Grade Au (‘000s) (g/t) (oz) (‘000) (g/t) (oz) Ironstone Well Flushing Meadows1 2,141 1.3 91,000 5,245 1.1 177,000 Mt McClure Challenger2 718 1.9 44,000 3 Success 1,255 1.9 75,000 Parmelia4 252 2.1 17,000 5 HMS Sulphur 1010 1.2 39,000 6 Gilmore 134 1.7 7,200 Sub-total - MMC 3,369 1.7 182,200 Gordons Gordons Dam7 365 1.7 20,000 2,141 Grand-total8 8,979 1.3 379,200 1.3 91,000 Total Tonnes (000’s) Grade (g/t) Au (Oz) 7,386 1.1 268,000 718 1.9 44,000 1,255 1.9 75,000 252 2.1 17,000 1010 1.2 39,000 134 3,369 1.7 1.7 7,200 182,200 365 1.7 20,000 11,120 1.4 470,200 Due to the effects of rounding, totals may not represent the sum of the individual components. 1. Reported above 0.5g/t Au lower cut-off grade; refer to Yandal Resources Ltd ASX announcement dated 4 November 2020 for full details. 2. Reported above 1.0g/t Au lower cut-off grade; refer to Yandal Resources Ltd ASX announcement dated 22 August 2022 for full details 3. Reported above 1.0g/t Au lower cut-off grade; refer to Yandal Resources Ltd ASX announcement dated 6 September 2022 for full details.4. Reported above 1.0g/t Au lower cut-off grade; refer to Yandal Resources Ltd ASX announcement dated 20 September 2022 for full details 5. Reported above 0.5g/t Au lower cut-off grade within this announcement 6. Reported above 1.0g/t Au lower cut-off grade within this announcement 7. Reported above 1.0g/t Au lower cut-off grade; refer to Yandal Resources Ltd ASX announcement dated 6 April 2023 for full details 8. All Resources are reported as global estimates, not constrained by optimised pit shells. yandalresources.com.au | ASX:YRL 14 Competent Person Statement The information in this document related to Exploration Targets and Exploration Results, geology and data compilation is based on information reviewed or compiled by Mr Christopher Oorschot, a Competent Person who is a Member of The Australasian Institute Geoscientists. Mr Oorschot is the Exploration Manager and Technical Director for the Company, is a full-time employee and holds shares and options in the Company. Mr Oorschot has sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined in the 2012 Edition of the ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’. Mr Oorschot consents to the inclusion in this announcement of the matters based on this information in the form and context in which it appears. The information in this announcement that relates to the Flushing Meadows, Mt McClure and Gordons Dam Mineral Resource Estimates is based on information compiled and generated by Andrew Bewsher, an employee of BM Geological Services Pty Ltd (“BMGS”). Both Andrew Bewsher and BMGS hold shares in the company. BMGS consents to the inclusion, form and context of the relevant information herein as derived from the original resource reports. Mr Bewsher has sufficient experience relevant to the style of mineralisation and type of deposit under consideration and to the activity which is being undertaken to qualify as a Competent Person as defined in the 2012 Edition of the JORC ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’. YRL confirms that it is not aware of any new information or data that materially affects the information included in the original market announcement. The company confirms that the form and context in which the Competent Person’s findings are presented have not been materially modified from the original market announcement. Forward Looking Statements This document may contain certain forward-looking statements. Forward-looking statements include, but are not limited to, statements concerning Yandal Resources Limited’s (Yandal’s) current expectations, estimates and projections about the industry in which Yandal operates, and beliefs and assumptions regarding Yandal’s future performance. When used in this document, words such as “anticipate”, “could”, “plan”, “estimate”, “expects”, “seeks”, “intends”, “may”, “potential”, “should”, and similar expressions are forward-looking statements. Although Yandal believes that its expectations reflected in these forwardlooking statements are reasonable, such statements are subject to known and unknown risks, uncertainties and other factors, some of which are beyond the control of Yandal and no assurance can be given that actual results will be consistent with these forward-looking statements. Drilling results presented indicate geological potential for mineralisation but there can be no certainty that these results will eventually form part of a Mineral Resource Estimate. yandalresources.com.au | ASX:YRL 15 Table 1 – Oblique RC collar location summary for this release. Note that grey text represents results that have previously been released on 29/4/2024) Prospect Hole ID Hole type Oblique Oblique Oblique Oblique Oblique Oblique Oblique Oblique Oblique Oblique Oblique Oblique Oblique Oblique Oblique Oblique Oblique 24IWBRC0001 24IWBRC0002 24IWBRC0003 24IWBRC0004 24IWBRD0005 24IWBRC0007 24IWBRC0008 24IWBRD0009 24IWBRC0010 24IWBRC0011 24IWBRC0012 24IWBRD0013 24IWBRD0014 24IWBRC0015 24IWBRD0016 24IWBRC0017 24IWBRC0018 RC RC RC RC RC Pre-Collar RC RC RC Pre-Collar RC RC Water Bore RC RC Pre-Collar RC Pre-Collar RC RC Pre-Collar RC RC East (m) 274413 274449 274464 274542 274603 274372 274523 274755 274630 274720 274781 274825 274948 275123 275184 275305 274339 North RL Azimuth Dip (m) (mAHD) (degrees) (degrees) 7035823 7035867 7035729 7035822 7035657 7036011 7035487 7035612 7035301 7035249 7035249 7035376 7035216 7035032 7035108 7035099 7035970 542 541 543 542 545 542 546 545 545 544 544 546 543 538 539 538 543 219 221 218 220 223 223 223 220 360 225 221 223 223 222 218 219 224 -59 -61 -61 -60 -60 -60 -60 -60 -90 -60 -61 -61 -59 -60 -62 -61 -60 Total Depth (m) 174 134 174 136 114 180 222 102 100 120 150 90 102 186 108 180 162 Table 2 – Oblique - Summary of significant RC drilling assay results >0.3g/t Au with no more than 2m of continuous internal waste included unless otherwise stated. Note that grey text represents results that have previously been released on 29/4/2024. Hole ID 24IWBRC0001 24IWBRC0002 24IWBRC0002 24IWBRC0002 24IWBRC0003 24IWBRC0003 24IWBRC0003 24IWBRC0003 24IWBRC0004 24IWBRC0004 24IWBRD0005 24IWBRD0007 24IWBRC0008 24IWBRD0009 24IWBRC0010 24IWBRC0010 24IWBRC0010 24IWBRC0010 24IWBRC0010 Sample type / Sub Interval 1m RC 1m RC Including Including 1m RC 1m RC 1m RC 1m RC 1m RC 1m RC 1m RC 1m RC 1m RC 1m RC 1m RC 1m RC 1m RC 1m RC 1m RC From (m) To (m) Interval (m) Au (g/t) Comment 66 74 78 79 65 76 85 163 97 114 14 NSA NSA NSA 15 20 39 61 66 69 89 86 82 66 79 86 164 100 118 15 3 15 8 3 1 3 1 1 3 4 1 1.5 1.7 2.7 5.3 0.6 0.8 0.5 0.5 0.5 0.4 0.5 Oxide Transitional Transitional Transitional Oxide Oxide Oxide Oxide Transitional Fresh Oxide 16 27 41 62 67 1 7 2 1 1 0.9 0.8 0.4 0.5 0.3 OBL01, Oxide OBL01, Oxide OBL01, Oxide OBL01, Oxide OBL01, Oxide yandalresources.com.au | ASX:YRL 16 Hole ID 24IWBRC0010 24IWBRC0010 24IWBRC0010 24IWBRC0011 24IWBRC0011 24IWBRC0011 24IWBRC0011 24IWBRC0011 24IWBRC0012 24IWBRC0012 24IWBRC0012 24IWBRC0012 24IWBRC0012 24IWBRC0012 24IWBRC0012 24IWBRC0012 24IWBRC0012 24IWBRC0013 24IWBRD0014 24IWBRC0015 24IWBRC0015 24IWBRC0015 24IWBRC0015 24IWBRC0015 24IWBRC0015 24IWBRD0016 24IWBRC0017 24IWBRC0018 24IWBRC0018 24IWBRC0018 24IWBRC0018 Sample type / Sub Interval 1m RC 1m RC 1m RC 1m RC 1m RC Including 1m RC 1m RC 1m RC Including Including 1m RC 1m RC 1m RC 1m RC 1m RC 1m RC 1m RC 1m RC 1m RC 1m RC 1m RC 1m RC 1m RC 1m RC 1m RC 1m RC 1m RC 1m RC 1m RC 1m RC From (m) To (m) Interval (m) Au (g/t) Comment 73 76 93 19 34 34 51 89 50 51 71 96 102 117 123 132 139 1 90 86 93 106 111 136 181 NSA NSA 47 58 73 83 74 80 97 24 43 35 53 96 78 55 75 97 105 118 124 134 140 2 102 87 94 107 116 140 182 1 4 4 5 9 1 2 7 28 4 4 1 3 1 1 2 1 1 12 1 1 1 5 4 1 0.3 1.3 0.5 1.0 1.8 10.2 0.6 1.2 1.1 3.3 2.1 0.4 0.5 0.3 0.5 0.4 1.9 0.5 0.4 1 1.8 2.4 0.7 0.6 0.9 OBL01, Oxide OBL01, Oxide Oxide OBL01, Oxide OBL01, Oxide Oxide Oxide Oxide OBL01, Oxide Oxide Oxide Oxide Oxide Oxide Oxide Transitional Fresh Transported Transitional Oxide Oxide Transitional Fresh Fresh Fresh 54 59 76 84 7 1 3 1 0.9 0.7 1.4 0.4 Oxide Transitional Transitional Transitional yandalresources.com.au | ASX:YRL 17 Appendix 1 – Ironstone Well-Barwidgee Gold Project JORC Code (2012) Table 1, Sections 1 and 2 Mr Christopher Oorschot, Exploration Manager and Technical Director of Yandal Resources, compiled the information in Section 1 and Section 2 of the following JORC Table 1 and is the Competent Person for those sections. The following Table and Sections are provided to ensure compliance with the JORC Code (2012 edition) requirements for the reporting of Exploration Results. Section 1 Sampling Techniques and Data Criteria JORC Code explanation Commentary Sampling techniques Nature and quality of sampling (e.g. cut channels, random chips, or specific specialised industry standard measurement tools appropriate to the minerals under investigation, such as down hole gamma sondes, or handheld XRF instruments, etc.). These examples should not be taken as limiting the broad meaning of sampling. • • • Include reference to measures taken to ensure sample representivity and the appropriate calibration of any measurement tools or systems used. • • Aspects of the determination of mineralisation that are Material to the Public Report. In cases where ‘industry standard’ work has been done this would be relatively simple (e.g. ‘reverse circulation drilling was used to obtain 1 m samples from which 3 kg was pulverised to produce a 30 g charge for fire assay’). In other cases more explanation may be required, such as where there is ASX Announcement 18th June 2024 • Yandal Resources (YRL) RC Samples were collected via a rig-mounted static cone splitter, splitting approximately 12.5% of the total sample volume. Two splits are collected for each metre: a primary and duplicate sample. The primary 1m samples are then sent to a lab for further analysis. The duplicate samples are retained on-site unless they are submitted as routine duplicates. For historical RC drilling, sampling practices by previous operators are assumed to be industry standard at that time. Sampling procedures would be comparable to those applied by Yandal Resources as per the above but with variations in the type of splitter used, etc. Historic core sampling procedures are unknown and are assumed to be industry standard at that time. Historic core samples have not been retained by the project and are unavailable for review. For YRL RC drilling, the cone splitter is regularly cleaned and inspected. The 1m bulk samples are laid out in drill order. These bulk samples are regularly inspected for contamination, and the volume of the bulk sample is monitored. These bulk samples are retained until all results are received and may be used to collect additional field duplicates to verify lab results, logged geology or any other form of analysis. If the bulk sample appears visually low in volume or weight, this is recorded with the sample details. The same applies to damp or wet samples. Two splits are collected for each drilled metre: a primary and a secondary sample. The Secondary sample is retained on-site and may be used to collect additional field duplicates to verify lab results, logged geology or any other form of analysis For all results, RC drilling was used to obtain 1m samples from which a portion, between 1-3kg in weight, was crushed and pulverised to produce a 50g charge for fire assay with an AAS (atomic absorption spectroscopy) finish for gold determination with a 0.01ppm detection limit. Page 18 Criteria JORC Code explanation Commentary coarse gold that has inherent sampling problems. Unusual commodities or mineralisation types (e.g. submarine nodules) may warrant disclosure of detailed information. Drilling techniques Drill type (e.g. core, reverse circulation, open-hole hammer, rotary air blast, auger, Bangka, sonic, etc) and details (e.g. core diameter, triple or standard tube, depth of diamond tails, face-sampling bit or other type, whether core is oriented and if so, by what method, etc). • • For YRL RC drilling, a 139mm diameter face sampling bit and hammer was used. For historical RC drilling, a 5’ ¼ inch face sampling bit and hammer was used. Drill sample recovery Method of recording and assessing core and chip sample recoveries and results assessed. • For YRL holes, RC drilling recoveries are visually assessed by the supervising geologist, and any low-volume or weight samples are recorded, along with any damp or wet samples. Drill depths are routinely verified at the completion of each drill rod (every 6m). The cone splitter is checked for each drill site to ensure it is completely upright and level. Sample collection from the splitter by drilling off-siders is monitored for any inefficiencies. For deeper holes, larger drilling equipment is used, with boosted air pressure, to ensure samples are recovered and groundwater is reasonably controlled as much as reasonably possible. There is currently not enough data to assess if lower sample recoveries produce a sampling bias within deeper drilling, noting that major shears bear water and volume loss is associated with these structures. The Company aims to assess this through the use of diamond drilling. For historic RC drilling, exact records of measures applied to manage or monitor sample recoveries have not been preserved. It is assumed that previous project operators used industry standard procedures comparable to those used by YRL above. For YRL drilling, all RC holes have been logged in full by a qualified and experienced geologist. RC chips and fines from each 1m interval drilled are inspected and logged for colour, weathering, lithology, deformation, veining and mineralisation. All 1m samples are wet-sieved and retained in labelled and annotated chip trays. Chip trays are stored on-site for review and transported to Perth for long-term storage. The quality of logging information is considered sufficient to support appropriate Mineral Resource Estimation studies. Historic geological logging is limited in detail but provides sufficient information regarding lithology, weathering, and mineralisation. It is assumed that previous project operators used industry standard logging procedures comparable to those used by YRL above. Data captured through geological logging by a geologist is qualitative in nature. In addition to geological logging, the magnetic susceptibility of each interval is measured using a KT-10 magnetic susceptibility metre, with a sensitivity of 1x10-6 SI Units. Magnetic susceptibility Measures taken to maximise sample recovery and ensure representative nature of the samples. Whether a relationship exists between sample recovery and grade and whether sample bias may have occurred due to preferential loss/gain of fine/coarse material. • • Logging Whether core and chip samples have been geologically and geotechnically logged to a level of detail to support appropriate Mineral Resource estimation, mining studies and metallurgical studies. Whether logging is qualitative or quantitative in nature. Core (or costean, channel, etc) photography. The total length and percentage of the relevant intersections logged. ASX Announcement 18th June 2024 • • • • Page 19 Criteria JORC Code explanation Commentary Sub-sampling techniques and sample preparation If core, whether cut or sawn and whether quarter, half or all core taken. • If non-core, whether riffled, tube sampled, rotary split, etc and whether sampled wet or dry. For all sample types, the nature, quality and appropriateness of the sample preparation technique. Quality control procedures adopted for all sub-sampling stages to maximise representivity of samples. Measures taken to ensure that the sampling is representative of the in situ material collected, including for instance results for field duplicate/second-half sampling. • • • • readings are quantitative in nature. YRL RC drilling utilised a rig-mounted cone splitter installed directly below and in line with the rig-mounted cyclone. Two 1-3kg sub-samples are collected into calico bags labe