Announcement PDF PO Box 661 Nedlands WA 6009 15 Robinson Av Belmont WA 6104 T: 08-9380 6063 E: info@buxtonresources.com.au W: www.buxtonresources.com.au View online: buxtonresources.com.au/link/rD1poP ASX Release Buxton Resources Ltd (ASX: BUX, BUXO) 02 October 2025 Strong Pathfinder Assays from Centurion • Silver assays up-to 4.57 g/t from partial leach assays at end of hole CN002DD • High silver is associated with elevated W, Mo, Re, Cu & Zn • Results highlight potential for nearby precious &/or base-metal deposits Buxton Resources Ltd (ASX: BUX) is pleased to report assay results from recent Centurion Project drillhole CN002DD (see Figure 1 and Table 1) Figure 1: CN002DD core photos (wet, prior to sampling) at the end of hole showing the loose sands that caused the hole to be abandoned. Ionic Leach (partial digest) sample intervals and silver results are shown. The petrology and uXRF sample lies on the contact between the Worral Formation Waldecks Member and the underlying Elsa Sandstone (1 g/t = 1000 ppb). Cautionary Statement: Partial leach is a chemically biased assaying method that operates by separating and examining only a fraction of the chemical composition of the whole sample via weak acids and ultra-sensitive analytical instrumentation methods. The results indicate metals, including silver, have been transported to the sample site from an unknown source via naturally occurring dispersion processes. The results should not be considered a proxy or substitute for laboratory analyses of the source of the elements reported and may not be suitable for resource estimation. This Announcement is supported by a video overview from CEO Marty Moloney available on Buxton’s InvestorHub PO Box 661 Nedlands WA 6009 15 Robinson Av Belmont WA 6104 T: 08-9380 6063 E: info@buxtonresources.com.au W: www.buxtonresources.com.au View online: buxtonresources.com.au/link/rD1poP Highly encouraging results have been returned from end-of-hole partial leach assaying (ALS Ionic Leach) of a suite of elements including Ag, W, Mo, Re, Cu and Zn that are distinctly anomalous compared to background material. Comparison with total leach analysis (four-acid digest) indicates a chemical dispersion anomaly has been intersected by CN002DD (Figure 2 & Technical Discussion below). These results highlight potential for precious &/or base-metal deposits with the very high silver levels indicating the source is likely nearby (i.e. within hundreds of metres). Table 1: Assay results from partial leach analysis of sands from CN002DD. Comparative values for the length-weighted intersection by total leach (four-acid ALS ME-MS61L) along with blank and unmineralised dune sand are also presented. Drilled widths are interpreted to represent true widths. Sample ID From (m) To (m) Interval (m) Ag (ppb) Cu (ppb) Mo (ppb) Re (ppb) Zn (ppb) W (ppb) CEN001 805.00 806.00 1.00 4,570 4,210 3,960 0.131 2,220 6,480 CEN002 806.00 807.00 1.00 3,560 3,400 2,300 0.074 2,670 3,100 CEN003 807.00 808.00 1.00 4,360 4,110 2,650 0.084 2,370 3,430 CEN004 808.00 808.90 (eoh) 0.90 3,710 3,910 1,860 0.071 3,320 2,680 Partial Leach (PL) Intercept 3.90 m 4,059 3,907 2,714 0.090 2,628 3,954 Total Leach Intercept 3.90 m 3,401 6,284 3,159 0.751 7,433 6,565 PL Blank (washed white sand) 2 23 <1 <0.001 340 <1 PL Dune Sand (average of 4 samples) <1 155 3 0.001 123 <1 Figure 2: Schematic cross section (not to scale). The CN002DD testwork aims to assess potential for nearby mineralisation by detecting chemical / mechanical dispersion anomalies in cover sequence sediments. Proximity to a sulfide source is indicated by high silver & other metals as reported herein. PO Box 661 Nedlands WA 6009 15 Robinson Av Belmont WA 6104 T: 08-9380 6063 E: info@buxtonresources.com.au W: www.buxtonresources.com.au View online: buxtonresources.com.au/link/rD1poP Technical Discussion Two holes were recently completed as part of Buxton’s 2025 drilling program with assays reported herein from the second hole CN002DD (see ASX 11 Aug 25 and the “About the Centurion Project” below for further details on the drilling program). Since CN002DD was abandoned at the base of the Canning Basin cover sequence, which likely post-dates mineralisation, Buxton’s laboratory analysis program aims to determine if this hole intersected a geochemical dispersion anomaly, indicating potential for nearby sulfide mineralisation (Figure 2). The mechanisms for dispersing metals through a cover sequence may be chemical (e.g. dissolving and reprecipitating) and/or mechanical. Chemical Dispersion Testwork Comparing partial vs total leach analyses provides a test for chemical dispersion. The loose sands at the base of CN002DD (Figure 1) are highly porous and likely lie just above the unconformity with Proterozoic basement. These sands are therefore an excellent sampling medium to undertake this type of analysis. Groundwaters carrying metals will preferentially pass through these sands (e.g. as they move down the local hydrological gradient away from a local basement high). That groundwater can then leave traces of these metals attached to the sand & clay particles. This type of dispersion results in relatively high partial leach results when compared with the total leach analysis whereas usually the partial leach returns far lower abundances. This is the pattern indicated by the recent assay results from CN002DD for the metals Ag, W, Mo, Re, Cu and Zn as illustrated on Figure 3. Relatively high partial leach iodine and bromine indicate that salts deposited on the sand grains have likely co-precipitated with the metals. The suite of anomalous metals returned from the partial leach test work is not characteristic of the targeted IOCG deposit style; however, chemical dispersion processes are complex, affecting elements to different degrees, such that the source metal association (e.g. of the in-situ sulfide mineralisation) will likely be distinct from that sampled in CN002DD. These results may equally indicate prospectivity for other deposits, such as sediment hosted copper or skarn-style where ore mineralogy typically includes magnetic gangue minerals. This emphasises the importance of the magnetic feature for further exploration (Figure 6, Figure 7). PO Box 661 Nedlands WA 6009 15 Robinson Av Belmont WA 6104 T: 08-9380 6063 E: info@buxtonresources.com.au W: www.buxtonresources.com.au View online: buxtonresources.com.au/link/rD1poP Figure 3: Partial vs Total leach results (arithmetic mean of CN002DD end-of-hole loose sand samples CEN001-4) normalised to continental crust abundance1 . Relatively enriched elements are on the left of chart vs those which are relatively depleted on the right (depleted elements include those which may be present but hosted by minerals resistant to the leaching agents). The quoted crustal abundance of silver is 53 ppb, making the average partial leach results ~77 times higher than average, with W, Mo and Re also returning higher than crustal average partial & total leach assays. Elements with relatively high Partial Leach : Total Leach ratio appear as "spikes" and include metals Cu, Pd, Br, Zn, Se, Sr, Pt, I, Au and Hg. These metals are likely to be present as highly soluble minerals that have been enriched in the sands via a chemical dispersion process. Mechanical Dispersion Testwork A distinctly magnetic unit was intersected around 450 metres depth in the mud- rotary section of CN002DD (see downhole magnetic susceptibility results plotted on Figure 7). A small (5g) magnetic concentrate was collected using a handheld magnet from ~1kg cuttings sampled between 444 – 450m depth. This concentrate comprised fine sand-sized particles of magnetite and other iron oxides, along with other magnetised grains of other silicates. These minerals may have been eroded from the magnetic feature adjacent to the drillhole (see Figure 6 & Figure 7). This concentrate sample was analysed at Bureau Veritas for a total-leach and fire assay and returned 63 ppb Au. This result is around 41 times average continental crust, and equivalent to a highly anomalous result from surface samples collected in a similar manner (e.g. fine magnetic lag of ferruginous soils2 ). 1 Rudnick, R.L., and S. Gao. ‘Composition of the Continental Crust’. In Treatise on Geochemistry, 1–51. Elsevier, 2014. http://dx.doi.org/10.1016/B978-0-08-095975-7.00301-6 2 Mcqueen, K. & Rugless, C.S. & Williams, R.E.. (2005). McKinnons gold deposit, Cobar District, NSW. In book: Regolith Expression of Australian Ore Systems (pp.282-284) CRC LEME, Bentley, WA Eds: C.R.M. Butt, I.D.M. Robertson, K.M. Scott, M. Cornelius PO Box 661 Nedlands WA 6009 15 Robinson Av Belmont WA 6104 T: 08-9380 6063 E: info@buxtonresources.com.au W: www.buxtonresources.com.au View online: buxtonresources.com.au/link/rD1poP The multielement results indicate this material is enriched in a suite of metals similar to the lower sands (Figure 4). Heavy mineral separate analysis is underway to assess the significance of this preliminary result. Figure 4: Total leach magnetic concentrate from 444-450m in CN002DD (arithmetic average of a field duplicate pair) normalised to continental crust abundance as per Figure 3. In addition to a similar suite of metals as those enriched in the partial leach (Ag, W, Mo, Pt and Pd), the magnetic concentrate also has elevated gold (average 63 ppb vs 1.5 ppb quoted average abundance in continental crust). Next Steps The sandstone at the base of CN002DD has diverse lithic fragments (see ASX 16 Sep 2025) indicative of mechanical dispersion from a proximal basement source. Buxton's ongoing testwork on this material includes core petrology and micro-XRF (see Figure 1 for sample location) and heavy mineral separate analysis. The heavy minerals may include metal bearing sulphides, and/or “indicator” minerals such as zircon, iron-oxides, garnets, monazite, spinels and apatite. Prospectivity assessment on indicator minerals typically involves measuring the elemental composition of individual minerals using laser ablation techniques. More details on the ongoing analytical work program on samples from CN002DD are provided in ASX 16 Sep 2025. Petrological and micro-XRF results are expected by mid-October. The preparation of heavy mineral separates is also nearing completion; however, analysis may take several months to complete. An MT survey (co-funded by the WA government) is also being planned to map the elevation of the basement interface. The geophysical results, along with the pending assay and other analysis from CN002DD, will then inform future drill planning. PO Box 661 Nedlands WA 6009 15 Robinson Av Belmont WA 6104 T: 08-9380 6063 E: info@buxtonresources.com.au W: www.buxtonresources.com.au View online: buxtonresources.com.au/link/rD1poP We look forward to providing shareholders with further updates on these activities in due course. ---o0o--- This announcement is authorised by the Board of Buxton Resources Ltd. For further information, please contact: Martin Moloney Sam Wright Chief Executive Officer Company Secretary marty@buxtonresources.com.au sam@buxtonresources.com.au About the Centurion Project The Centurion Project consists of a single EL covering ~80 km2 located in the Great Sandy Desert between Kiwirrkurra and Balgo (Figure 5). The Centurion Project is situated in an excellent regional structural setting, close to a “triple junction” of GSWA’s “Major Crustal Boundaries”. The Project is focussed on a prominent dipolar and offset magnetic and gravity anomaly. This is a characteristic geophysical pattern associated with Iron Oxide Copper Gold (IOCG) deposits such as Olympic Dam, Prominent Hill and Carrapateena. A previous drill test was attempted by CRA in 1991 which encountered drilling difficulties and was terminated at 432.30 m having failed to reach basement. CRA’s geological logs noted chlorite-pyrite altered, boulder-sized clasts of felsic and mafic intrusives in a conglomerate assigned to the Permian Grant Formation toward the end of the hole. This observation provides strong encouragement that the geophysical response may be related to a hydrothermal system consistent with the IOCG model. In November 2023, Buxton entered in Heritage Protection Agreements with the Ngurra Kayanta and Parna Ngururrpa Aboriginal Corporations, and a Heritage Survey was completed in July 2024. Provision for Buxton personnel and contractors to pass through lands of the Kiwirrkurra People is provided by a third access agreement. Buxton has also received permits from the Aboriginal Lands Trust to fulfil statutory requirements to access the Project. PO Box 661 Nedlands WA 6009 15 Robinson Av Belmont WA 6104 T: 08-9380 6063 E: info@buxtonresources.com.au W: www.buxtonresources.com.au View online: buxtonresources.com.au/link/rD1poP In May 2024, Buxton was awarded a WA Government Exploration Incentive Scheme grant to offset up to $220,000 of the cost of drilling the planned maiden drill hole at Centurion. In July 2025, Buxton commenced its maiden drilling program at Centurion. After CN001DD was abandoned at 404 metres depth due to collar instability, CN002DD was drilled as mud rotary to 558 metres depth, with diamond coring thereafter proceeding smoothly until loose sands were intersected around 805 metres depth. These sands caused that hole to be abandoned before it had reached the basement rocks, likely Proterozoic in age, which are the interpreted host of the magnetic and gravity anomalies that define the Centurion target. Encouragingly, close to the end of hole CN002DD at ~799.6 metres depth, a gritty lithic sandstone unit was encountered with polymictic pebble clasts that include granitic, hematite-quartz, quartz-veined, and metamorphic lithologies (see ASX 11 Aug 25) which are likely to have been shed from a nearby basement high. Buxton is undertaking detailed analysis of this material to assess the prospectivity of the source region. An airborne MT survey (also co-funded by the WA government) is planned to map the elevation of the basement interface which, together with the pending assay results, will inform future drill planning. Figure 5: Location of Buxton’s Centurion Project showing nearby projects (GSWA statewide magnetic image & major crustal boundaries dataset). PO Box 661 Nedlands WA 6009 15 Robinson Av Belmont WA 6104 T: 08-9380 6063 E: info@buxtonresources.com.au W: www.buxtonresources.com.au View online: buxtonresources.com.au/link/rD1poP Figure 6: Centurion Project showing GSWA’s statewide magnetic imagery overlain with GSWA gravity contours along with the site of CRA’s VE001, with Buxton’s 2025 vertical holes CN001DD & CN002DD. The basement high has been interpreted based on updated magnetic and gravity inversions in conjunction with new seismic interpretation by the GSWA3 . 3 Zhan, Y 2025, Seismic interpretation of the Kidson sub-basin, Crossland Platform, Ryan and Tabletop Shelves of the Canning Basin, Western Australia: Geological Survey of Western Australia, Report 2025/257, 35p (see Figure 16). PO Box 661 Nedlands WA 6009 15 Robinson Av Belmont WA 6104 T: 08-9380 6063 E: info@buxtonresources.com.au W: www.buxtonresources.com.au View online: buxtonresources.com.au/link/rD1poP Figure 7: Cross Section showing new geochemical data with for CN002DD (re-drill of CN001DD which is omitted for clarity). Inversion models of gravity gradiometry (Falcon 2km flight line spacing) and magnetics (Cornish-Helena 400m flight line spacing - UBC inversion). The correlation between geological units is shown (including BUX's revisions to CRA's stratigraphic interpretation of VE001), along with magnetic susceptibility results. Interpretation of the lithologies intersected by CN002DD has utilised recent GSWA interpretation of local petroleum exploration data4 . The Elsa Sandstone of Worral Group has a maximum known thickness of 50 metres and may rest directly on basement in this area. 4 Haring, MO & Allison, ER, 1985, EP-308 Canning Basin : Geological and Geophysical Status Report. The Shell Company of Australia Limited PO Box 661 Nedlands WA 6009 15 Robinson Av Belmont WA 6104 T: 08-9380 6063 E: info@buxtonresources.com.au W: www.buxtonresources.com.au View online: buxtonresources.com.au/link/rD1poP Competent Persons The information in this report that relates to Exploration Results is based on information compiled by Mr Martin Moloney. Mr. Moloney, (B. App Sc. Hons) is a Member of the Australian Institute of Geoscientists and Society of Economic Geologists. Mr Moloney is a full-time employee of Buxton Resources Ltd. Mr Moloney has sufficient experience which is relevant to the activity being undertaken to qualify as a “Competent Person” as defined in the 2012 edition of the Joint Ore Reserves Committee (JORC) Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves. Mr Moloney consents to the inclusion in this report of the matters based on the information in the form and context in which it appears. Previously Reported Information - Centurion There is information in this announcement relating to exploration results previously announced on: 1. 23rd May 2024 – Centurion Project (100% BUX) – Exploration Update 2. 10th October 2024 – Centurion Project, West Arunta (100% BUX) - Heritage Clearance Surveys Received 3. 16th June 2025 – Fieldwork commences at Centurion 4. 8th July 2025 – Maiden Drilling Program Underway at Centurion 5. 22nd July 2025 – Centurion Drilling Program Update 6. 11th August 2025 – Centurion Project: Drilling and Next Exploration Steps 7. 16th September 2025 – Centurion Results Pending Validity of Referenced Results Buxton confirms that it is not aware of any new information or data that materially affects the information from previous ASX Announcements referenced in this Announcement. PO Box 661 Nedlands WA 6009 15 Robinson Av Belmont WA 6104 T: 08-9380 6063 E: info@buxtonresources.com.au W: www.buxtonresources.com.au View online: buxtonresources.com.au/link/rD1poP Table 2: Centurion Project drill hole collar detalis. Hole ID North (m) East (m) RL (m) Depth (m) Azimuth Dip Type Year VE001 (CRA) 7606449 319461 382 432.30 0 -90 DD 1991 CN001DD (BUX) 7605992 318703 385 404.00 0 -90 MR 2025 CN002DD (BUX) 7605992 318705 385 808.90 0 -90 MR/DD 2025 Table 3: Stratigraphic units intersected in CN002DD. All stratigraphic units are part of, or overly, the Canning Basin. From To Stratigraphic Unit Lithological observations 0 17 Quaternary sands Unconsolidated ferruginous aeolian sand 17 119 Poole Sandstone Interbedded sandstone, siltstone, mudstones, light grey, kaolinitic 119 540 Grant Group Upper Unit - Quartz-lithic wacke, coarse-medium grained, grey, carbonaceous, variable mag susc. Middle Unit - dark grey – black mudstone / siltstone, pyritic & lesser fine sands Lower Unit - Quartz sandstone, fine-coarse, grey, weakly carbonaceous, carbonate-free 540 675.50 Fairfield Group Cream-grey thin, wavy, interbedded dolomitic siltstones and shales 675.50 682.75 Tangaldoo Sandstone Coarse, steeply cross-bedded, red-brown, likely aeolian 682.75 799.50 Worral Formation - Waldecks Member Wavy & thin bedded, dolomitic pyritic argillaceous siltstone / mudstone, red-brown muds to grey-blue dolomitic zones, dense & hard 799.50 808.90 Worral Formation – Elsa Sandstone Member Light brown / buff yellow gritty arkosic sandstone, fine-coarse, well sorted except in thin conglomerate beds, structureless to weakly bedded, polymict angular lithic fragments, calcite cement is partially to totally dissolved at the end-of-hole such that the material recovered was nodular to loose sand PO Box 661 Nedlands WA 6009 15 Robinson Av Belmont WA 6104 T: 08-9380 6063 E: info@buxtonresources.com.au W: www.buxtonresources.com.au View online: buxtonresources.com.au/link/rD1poP JORC Code, 2012 Edition – Table 1 Section 1 Sampling Techniques and Data Criteria JORC Code explanation Commentary Sampling techniques Nature and quality of sampling (eg 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 (eg ‘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 coarse gold that has inherent sampling problems. Unusual commodities or mineralisation types (eg submarine nodules) may warrant disclosure of detailed information. Buxton’s 2025 drillholes CN001DD & CN002DD were vertical and drilled from the same pad with mud- rotary & diamond techniques. Only one hole was intended to be drilled, however CN001DD had instability at the collar arising from insufficient surface casing which caused this hole to be abandoned during the mud rotary section at 404 metres depth. The mud rotary pre-collar of a second hole, CN002DD, was successfully completed to 558.5 metres, and extended to 808.9 metres depth with HQ diamond coring. After overcoming the initial drilling challenges with CN001DD, Buxton’s second hole was drilled to 808.9 meters before encountering loose sands assigned to a basal unit of the lower Canning Basin cover sequence (Worral Formation, Elsa Sandstone - see ASX (see ASX 22/7/2025 & 11/8/2025). Drilling techniques Drill type (eg core, reverse circulation, open-hole hammer, rotary air blast, auger, Bangka, sonic, etc) and details (eg 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). CRA 1991 Drilling Program (WAMEX A35274): An 8 inch percussion hole was drilled to 30 metres and cased with 6 inch polypipe. A standard 6-inch percussion hole was drilled from 30 metres to 198 metres. Diamond core (NQ) was drilled from 198 metres to E.O.H. at 432.30m. Buxton 2025 Drilling Program: DD1 Drilling used a PO Box 661 Nedlands WA 6009 15 Robinson Av Belmont WA 6104 T: 08-9380 6063 E: info@buxtonresources.com.au W: www.buxtonresources.com.au View online: buxtonresources.com.au/link/rD1poP Criteria JORC Code explanation Commentary Sandvik 1200 DE840 rig supported by a Duplex Power (AXG FX 5” x 6”) mud pump. Mud rotary hole was drilled using 115 mm RC rods (inner tubes removed). A 9” blade bit was used for the top 18-23 metres, and a 148 mm PCD mud rotary bit for the remainder of the Mud Rotary precollar hole. HQ diamond core drilling was used for the lower section of CN002DD. Mudlogic brand chemical additives used by DDH1 during this drilling program comprise: Collar Set, Rigid Foam (Part A&B), CRP, Ultra Foam/Max Foam, Pac L Ultra, Salt Gel, Pac R Ultra, Flossy Salt, GP Cement & DD Rod Grease Xta. Mudlogic have confirmed that none of the elements indicated as anomalous (Au, Ag, W, Mo, Re, Cu & Zn) are ingredients within these products. Drill sample recovery Method of recording and assessing core and chip sample recoveries and results assessed. 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. CRA 1991 Drilling Program (WAMEX A35274): Sampling methods, sample recovery or weights for the percussion precollar are not reported or discussed. CRA’s records do note diamond drilling core recovery for each run, with no significant core loss noted. Buxton 2025 Drilling Program: Mud Rotary Method: Sampling was undertaken using a 10-litre bucket in- line with the borehole fluid return channel between the drillhole and sump. One sample was collected per 6 metre drill rod. Mud Rotary sample recovery and sample quality is considered extremely poor with generally only 0.5-1kg of sample collected which represents <1% recovery, and all samples having variable contamination from up-hole sediments. Since the focus was on the pre-Canning Basin “basement” rocks, a high sample quality for the mud- rotary section was not an objective of the program. Mud rotary sample recoveries are estimated by calculating the drilled borehole volume, converted to weight using a nominal density of 2.6 g/cc and then comparing that value with weight of each sample. These “bulk” samples were initially stored in green bio-degradable bags and were then sub-sampled (un-sieved) using a spoon into chip trays for visual logging, pXRF analysis and future reference. The remainder was then transferred into a calico bag & dried. Core sample recovery was recorded on a per-run basis onsite during mark-up by qualified geologists, PO Box 661 Nedlands WA 6009 15 Robinson Av Belmont WA 6104 T: 08-9380 6063 E: info@buxtonresources.com.au W: www.buxtonresources.com.au View online: buxtonresources.com.au/link/rD1poP Criteria JORC Code explanation Commentary typically within 24 hours of the core having been drilled, allowing for quality checks on drillers’ core block marking. Core recovery for CN002DD is 98.3%. However, the sample recovered from the bottom 4.9 metres (805 – 808.9) is estimated to be 70% (this material was recovered as loose sand in the core barrel). No apparent relationship can be defined between sample recovery and grade. 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. Buxton 2025 Drilling Program: Logging of the mud rotary section was conducted at the Project site by qualified geologists. Onsite logging includes recording observations of lithology, mineralogy and mineralisation, which are recorded digitally. Logging includes the flagging of samples with evidence of contamination. Quantitative measurements were also completed onsite including magnetic susceptibility (KT10 v2), bulk density & portable XRF measurements (Niton XL3t Gold++ ). Photographs of all chip trays have been taken at BUX’s sample processing facility at the Project. Visual logging is semi-quantitative. Logging has been designed to be adequate to support downstream exploration studies and follow-up drilling. 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 CRA 1991 Drilling Program (WAMEX A35274): CRA reports that core was “split” (not cut) into halves with one half submitted to the laboratory in 2 metre composites. No sub-sampling (e.g. of individual clasts in the conglomerate) was undertaken. Buxton 2025 Drilling Program: Magnetic Susceptibility measurements were taken on the (0.5 kg) un-sieved “bulk” mud rotary samples and on drill core. pXRF measurements were made on sieved samples and drill core. Bulk density measurements were taken one per 3m for the core sections of the hole with a scale sensitive to 0.1g, accuracy estimated to be +/- 0.02 g/cc Buxton 2025 Drilling Program: All mud rotary samples were collected wet as is inherent to the drilling method as the sample is entrained as cuttings in the drilling fluid. These PO Box 661 Nedlands WA 6009 15 Robinson Av Belmont WA 6104 T: 08-9380 6063 E: info@buxtonresources.com.au W: www.buxtonresources.com.au View online: buxtonresources.com.au/link/rD1poP Criteria JORC Code explanation Commentary field duplicate/second-half sampling. Whether sample sizes are appropriate to the grain size of the material being sampled. samples were dried before splitting. A single mud rotary sample representing material from 444 m - 450 m depth was subsampled using a handheld magnet to collect ~5g of material to conduct a fire assay and ICP. Partial and Total leach assays have been split using a spear at Buxton’s warehouse in Perth. Diamond core sampling of loose material (805 – 808.9m) was sub-sampled using a spear to collect ~50% of the interval by weight. Diamond core sampling for petrology (799.5 – 799.6m) was sampled using a core saw to produce half core that was submitted for micro-XRF and petrological assessment. Quality of assay data and laboratory tests The nature, quality and appropriateness of the assaying and laboratory procedures used and whether the technique is considered partial or total. For geophysical tools, spectrometers, handheld XRF instruments, etc, the parameters used in determining the analysis including instrument make and model, reading times, calibrations factors applied and their derivation, etc. Nature of quality control procedures adopted (eg standards, blanks, duplicates, external laboratory checks) and whether acceptable levels of accuracy (ie lack of bias) and precision have been established. CRA 1991 Drilling Program (WAMEX A35274): CRA used Analabs in Welshpool for their geochemical analysis. Preparation methods GP001, GP009(58) and GP012 are reported. Analysis methods are considered "total" and comprise: GA140: Ag, Cu, Ni, Pb, Zn GI210: Ba, Cr, Fe, Ti, V, Zr GI222: Bi, Ce, Co, Mn, Mo, Nb, Th, U, Sb GG333: Au, Pt, Pd GX401: As