Announcement PDF ASX Announcement 27 February 2024 ASX: OD6 Excellent Metallurgical Recoveries Continue at Splinter Rock Project OD6 Metals Limited (OD6 or the Company) is pleased to announce that high metallurgical recoveries continue to be achieved from samples tested at the Australian Nuclear Science Organisation (ANSTO). Highlights: • Achieved excellent metallurgical recoveries, up to 90%, of Magnet Rare Earth Elements (MagREE) in multiple Prospect areas, across 60 new samples • • Average 62% MagREE recovery at 25g/l HCl (excluding basin edges and carbonaceous shales) – Centre Prospect: 40% to 90% recovery of MagREE (average 60%) – Flanker Prospects: 41% and 62% recovery of MagREE (average 53%) – Prop Prospect: 30% to 84% recovery of MagREE (average 70%) – Scrum Prospect: 40% to 89% recovery of MagREE (average 65%) Importantly recoveries for all magnet rare earth oxides (MagREO) inclusive of Nd, Pr, Dy, Tb are similar. This is the key to overall project economics for any clay hosted rare earth project. • Inside Centre continues to demonstrate excellent results with an average recovery of 64% MagREE. • When combined with high grades, low stripping ratios, low acid consumption and substantial tonnages, the recoveries provide considerable confidence in the key economic drivers • Enhanced understanding of specific areas of the expansive clay basins that offer the best recovery, enabling prioritisation of areas for economic studies (geo-metallurgical exploration). • Further metallurgical leaching and processing optimisation work underway • All assays contained in this ASX announcement are based on the 4-Acid soluble digestion method, aligning with the reporting of geological drill assays and the Mineral Resource Estimate. Brett Hazelden, Managing Director, commented: “The outstanding results from our metallurgical leaching studies continue to affirm the Splinter Rock project as Australia’s premier clay-hosted rare earth deposit. With consistent recoveries averaging over 60% across multiple prospects, and notably high recoveries observed for each of the fifteen rare earth elements, our confidence in the project’s potential remains high. The Inside Centre area within the Centre Prospect continues to shine, boasting dimensions of approximately 2km in length by 1km in width and thicknesses of up to 69 meters. Grades ranging between 1,400ppm to 2,200ppm TREO further underscore the project’s value proposition, complemented by leach recoveries averaging 64%. These metrics align closely with the essential value drivers we believe are crucial for the economic viability of clay-hosted rare earth projects. MagREE (Magnet Rare Earths) = Nd + Pr + Tb + Dy) MagREO (Magnet Rare Earth Oxide) = Nd2O3 + Pr6O11 + Tb4O7 + Dy2O3 TREO (Total Rare Earth Oxide) = La2O3 + CeO2 + Pr6O11 + Nd2O3 + Sm2O3 + Eu2O3 + Gd2O3 + Tb4O7 + Dy2O3 + Ho2O3 + Er2O3 + Tm2O3 + Yb2O3 + Lu2O3 + Y2O3. Of particular significance is the remarkable performance across all four Magnetic Rare earth elements, (Nd, Pr, Dy, and Tb), indicating a diversified resource base that is not reliant on just one or two elements. This diversification is a key factor for ensuring the economic sustainability of the project and sets Splinter Rock apart as a highly promising venture in the rare earth sector. Dr Darren Holden, Chair, also commented: “Two years ago we began the task of positioning OD6 at the forefront of research into geo-metallurgical exploration for Australian clay REE deposits. Our extensive REE-bearing clay basins span hundreds of square kilometres, providing us with the ability to select basins based on superior grade, thickness and recovery potential. Through ongoing collaborations with CSIRO, Murdoch University and ANSTO, we have made substantial progress in comprehending basin composition, regolith characteristics, REE mineralogy and metallurgical recovery potential. The board extends its congratulation the OD6 team and our esteemed research partners for achieving this significant milestone in metallurgical understanding. This progress serves as a strong indication that our research and exploration efforts are positioning OD6 as a frontrunner for the future development of clay REE in Australia.” Metallurgical Sample Selection A total of 60 samples were selected from a wide variety of clays, locations and depths to further develop a geometallurgical understanding of recovery across the various regolith types at our four large prospects at Splinter Rock (Prop, Centre, Scrum and Flanker). Samples were chosen based on differing geographic locations, REE grades, colours, chemical compositions, AEM conductivity, proximity to granite, basin position (including paleo valley/channel positions) and inferred geological genesis. Leach Conditions OD6 and ANSTO have developed a project specific bottle roll test procedure utilising a 25 g/L hydrochloric acid solution, nominally maintained at 30C and ambient pressure, with a 4 wt% solids density over a 24-hour period. Recoveries are then calculated based on the difference between the assayed solid head and solid residue using a 4-acid digestion method. This procedure was developed and benchmarked against previous tests to achieve results equivalent to diagnostic leach tests using a 25 g/L hydrochloric acid, at notionally ambient conditions and pressures, over a 6hour period. The leach conditions were selected based on previously announced works for consistency (refer ASX announcements, 7 November 2023 and 3 April 2023). Further optimisation works will be undertaken in future test work programs. The bottle roll method is devised to be an inexpensive and fast technique for determining the leachability of samples. Results of the test work are presented in Table 1 to 4 and Figures 3 and 6, with corresponding drill hole locations outlined in Figures 1, and 2. Test work results should be interpreted in the context of geological setting, selection of known non-clay samples to identify boundary limits, and OD6’s objectives to test various clay types to identify areas of favourable geology and metallurgy whilst delineating the extent of these areas. 2 Assay Method The Splinter Rock clay hosted prospect areas are characterised by a combination of ionically adsorbed, acidsoluble and refractory rare earth elements (REEs). Our chosen assay method (4-acid digestion) does not report the refractory rare earth component, aiming to eliminate the variable grade proportion of the refractory material, which could introduce modelling errors in the future. Work conducted by OD6 continues to demonstrate that utilising the alternative Lithium Borate Fusion Digest method can increase the head grade by up to 30% compared to the 4-acid assay method. However, it is important to note that this extra grade is highly unlikely to be recoverable in any proposed clay hosted rare earth process flowsheet. All assays contained in this ASX announcement are based on the 4-acid soluble digestion method, rather than the ALS Lithium Borate Fusion Digest method, aligning with OD6’s reporting of geological drill assays and the Mineral Resource Estimate. It should be acknowledged that future potential commercial production of REE is significantly improved through successful leaching of both ionic and acid-soluble REEs. Figure 1: Splinter Rock Scrum and Centre metallurgical sample drill hole locations on AEM model clay thickness 3 Figure 2: Splinter Rock Prop and Flanker metallurgical sample drill hole locations on AEM Model clay thickness Centre Prospect Results Centre Prospect results are presented in Table 1 and Figures 3. These results are based on three geological locations, each with its only clay setting and granite basin boundaries. The Centre Prospect is a large clay basin located within an elevated tableland, featuring multiple feeder channels and Booanya granite to the north. Based on the recovery results, the following observations can be made: Inside Centre • Is a significant feeder channel heading northwest into the main Centre Basin • MagRE Recoveries (extractions) across all four MagRE elements average between 41% and 77%. • Other rare earth elements are recovered in similar quantities, with Ce showing a lower variation and La showing a higher variation. • Areas on the margin of the clay basin have lower recovery, likely due to the transition between clay and saprock due to weathering. • No carbonaceous shales are found in this channel Centre North • Is a narrow channel located to the northwest of the main Centre Basin • MagRE Recoveries (extractions) across all four MagRE elements average between 50% and 70%. • No carbonaceous shales are found in this channel 4 Centre • Is a large Clay Basin covering a vast area • MagRE Recoveries (extractions) across all four MagRE elements are more variable, averaging between 40% and 90%. • Areas on the margin of clay basin have lower recovery, likely due to the transition between clay and saprock due to weathering. • A carbonaceous shale (black clay) located in parts of the basin is likely the remnants of a historic estuary. Recoveries and grades of rare earth located in this carbonaceous material are generally lower and have a corresponding increase in sulphur levels. • Below the carbonaceous shales recoveries and grades generally increase significantly. Table 1: Centre Prospect MagRE acid leach recovery for various drill hole locations, intercepts and sample types Composite ID Inside Centre SRAC0226 36-81m Head Assay TREO MagREO ppm ppm 1,462 268 1,525 370 1,426 326 1,082 225 1,526 325 Nd % 64 77 72 62 57 % MagRE Recovery Pr Tb Dy MagRE % % % % 62 52 52 63 76 69 68 77 70 65 59 71 63 58 52 62 59 56 50 57 SRAC0227 24-57m 1,825 371 53 52 42 41 52 SRAC0265 21-45m 2,045 519 44 41 41 41 43 SRAC0266 21-45m SRAC0271 30-45m 987 1,409 2,119 778 2,888 1,516 219 306 444 149 1028 413 72 62 55 50 51 60 71 61 54 47 47 56 58 48 64 62 56 67 57 47 62 60 58 70 71 61 55 50 51 60 SRAC0214 18-30m 1,267 295 17 16 10 14 16 1,167 885 579 922 2,403 660 1,670 2,370 2,053 468 1,574 249 212 89 119 755 128 362 457 477 98 298 21 55 59 19 30 27 54 61 59 58 54 44 Sample Error 88 91 90 26 20 19 31 24 25 39 46 45 57 55 55 35 21 20 27 27 28 21 55 58 SRAC0225 21-33m SRAC0225 33-51m SRAC0225 51-86m SRAC0226 21-36m SRAC0266 45-58m Centre North SRAC0207 24-36m SRAC0207 36-50m SRAC0271 21-30m Centre SRAC0215 21-42m SRAC0215 42-55m SRAC0217 21-33m SRAC0217 33-42m SRAC0217 42-57m SRAC0218 21-30m SRAC0218 30-42m SRAC0218 42-57m SRAC0218 57-76m SRAC0222 21-30m SRAC0222 30-41m 90 26 32 45 60 35 32 90 25 32 44 60 34 30 Sample Selection location, rock type, colour Clay Channel (grey clay) Clay Channel (grey, brown clay) Clay Channel (grey, brown clay) Clay Channel Edge (grey, brown clay) Clay Channel (grey, brown clay) Clay Channel (brown clay) Clay Channel (brown, grey clay) Basin Edge (grey saprock) Clay Basin Edge (grey, brown clay) Clay Basin (grey clay) Carbonaceous Shale Clay Basin (grey clay) Clay Basin Edge (grey, brown clay) Note: There will be some variation between original head grade total assay and the sum of residual solid and liquor assays which is not accounted for. Recoveries only reflect initial rare earth leaching, with further losses expected in precipitation, impurity removal, purification and drying. 5 Figure 3: Centre Prospect REE Recovery by Element (>40% MagREO recovery) Flanker Prospect Results Flanker Prospect results are presented in Table 2 and Figures 4. These results are based on two geological locations, each with its only clay setting and granite basin boundaries. The Flanker clay basin sits atop a magnetic high on the Booanya granite is likely composed of some transported clays, potentially related to a localised saprolite granite profile. Based on the recovery results, the following observations can be made: Flanker North • Is a channel located to the north of the main Flanker Basin • MagRE Recoveries (extractions) across all four MagRE elements average between 45% and 60%. • Other rare earth elements are recovered in similar quantities with La showing a lower recovery. • No carbonaceous shales are found in this channel Flanker • Is a diverse prospect comprising shallow basins and multiple channels surrounding granite outcrops. • MagRE Recoveries (extractions) across all four MagRE elements average between 41% and 62%. • Areas on the margin between the granites and clays see a sharp drop off in recovery. • No carbonaceous shales are found in this channel 6 Table 2: Flanker Prospect MagRE acid leach recovery for various drill hole locations, intercepts and sample types Composite ID Flanker North SRAC0272 18-27m SRAC0272 27-33m SRAC0273 21-36m SRAC0273 36-39m Flanker SRAC0233 09-21m SRAC0233 21-41m SRAC0234 06-15m SRAC0234 15-27m SRAC0234 27-38m SRAC0235 15-33m SRAC0235 33-42m SRAC0235 42-54m Head Assay TREO MagREO ppm ppm 2,968 657 2,075 2,236 796 1,243 887 1,068 1,260 1,184 833 1,351 729 145 597 568 180 281 227 257 283 261 134 298 Nd % 54 60 58 45 11 2 -3 21 41 19 63 43 % MagRE Recovery Pr Tb Dy MagRE % % % % 51 45 49 53 58 59 59 60 56 57 58 58 45 46 50 46 14 21 16 12 2 20 14 3 -2 11 8 -2 24 30 23 22 42 48 43 41 20 32 30 20 60 65 60 62 41 52 48 43 Sample Selection location, rock type, colour Clay Channel (brown, grey clay) Clay Channel (brown, grey clay) Granite Channel (brown saprock) Granite Channel (white, brown green clay) Clay Channel (brown, grey clay) Figure 4: Flanker Prospect REE Recovery by Element (>40% MagREO recovery) 7 Prop Prospect Results Prop Prospect results are presented in Table 3 and Figures 5. The Prop Prospect located at the lowest elevation at Splinter Rock and is surrounded by Booanya granite to the north and south, is interpreted to be a paleo-valley filled with clay, featuring multiple feeder channels. Based on the recovery results it can be observed that: • MagRE Recoveries (extractions) across all four MagRE elements are more variable, averaging between 30% and 84%. • Areas on the margin of clay basin have lower recovery, most likely due to the transition between clay and saprock caused by weathering. • Other rare earth elements are recovered in similar quantities with most elements exhibiting a broader range of recoveries • Some black carbonaceous shales (black clay) have been located in parts of the basin and are likely remnants of a historic estuarine river. Recoveries and grades of rare earth located in this carbonaceous material are generally lower and have a corresponding increase in sulphur levels. Table 3: Prop Prospect MagRE acid leach recovery for various drill hole locations, intercepts and sample types Composite ID Prop Head Assay TREO MagREO ppm ppm Nd % % MagRE Recovery Pr Tb Dy MagRE % % % % SRAC0152 03-21m 1,101 262 85 84 77 69 83 SRAC0252 30-45m 1,165 159 84 84 74 71 84 SRAC0252 57-72m 1,014 117 36 36 19 13 35 SRAC0256 30-39m 1,665 279 30 30 16 19 30 SRAC0256 39-57m 783 776 1,354 150 173 326 32 30 56 33 27 53 21 20 59 23 26 59 32 29 55 SRAC0257 18-36m SRAC0257 36-50m Sample Selection location, rock type, colour Paleo Channel (green, brown clay) Clay Basin Edge (black, grey, brown clay) Clay Basin Edge (black, brown clay) Clay Basin Edge (black, grey clay) 8 Figure 5: Prop Prospect REE Recovery by Element (>40% MagREO recovery) Scrum Prospect Results Scrum Prospect results are presented in Table 4 and Figures 6. The Scrum Prospect is characterised by a magnetic dipole, with the northern area coinciding with a magnetic high in Booanya granite grading to a magnetic low in the south. It has multiple feeder channels predominantly from the south and north. Based on the recovery results, the following observations can be made: • MagRE Recoveries (extractions) across all four MagRE elements are more variable averaging between 40% and 89% when excluding the carbonaceous shale zones. • Areas on the margin of clay basin have lower recovery, most likely due to the transition between clay and saprock due to weathering. • More broadly the other rare earth elements are recovered in similar quantities, with most elements exhibiting a range of recoveries • A carbonaceous shale (black clay) located in parts of the basis and is most likely the remnants of a historic estuary. Recoveries and grades of rare earth located in this carbonaceous material are generally lower and have a corresponding increase in sulphur levels. • Below the carbonaceous shales recoveries and grades generally increase. 9 Table 4: Scrum Prospect MagRE acid leach recovery for various drill hole locations, intercepts and sample types Composite ID Scrum SRAC0196 33-51m Head Assay TREO MagREO ppm ppm 1,100 225 527 125 968 263 679 167 1,073 269 Nd % 63 78 58 75 14 % MagRE Recovery Pr Tb Dy MagRE % % % % 62 68 64 63 77 72 64 78 57 50 42 57 74 67 62 74 14 22 20 14 SRAC0196 51-60m 1,019 241 53 57 56 57 54 SRAC0200 27-36m 1,597 321 12 7 -2 5 11 SRAC0200 36-52m 1,195 253 22 21 12 19 22 SRAC0203 33-39m SRAC0203 39-51m 1,094 1,498 251 355 19 13 19 8 9 -2 15 5 19 11 SRAC0203 51-58m 1,114 278 40 37 34 36 39 SRAC0206 30-51m 645 156 28 27 42 37 29 SRAC0206 51-60m 809 218 74 69 79 75 73 SRAC0274 18-33m 653 567 467 170 124 149 40 73 89 32 74 90 39 57 82 44 52 77 39 72 89 SRAC0063 30-48m SRAC0063 48-60m SRAC0070 39-63m SRAC0070 63-96m SRAC0274 33-51m SRAC0274 51-78m Sample Selection location, rock type, colour Clay Channel (grey clay) Clay Channel (grey clay) Carbonaceous Shale Clay Basin (grey clay) Carbonaceous Shale Clay Basin Edge (grey clay) Carbonaceous Shale Clay Channel (grey clay) Carbonaceous Shale Clay Channel (grey clay) Carbonaceous Shale Clay Channel (grey, brown clay) Figure 6: Scrum Prospect REE Recovery by Element (>40% MagREO recovery) 10 Forward Works Program • Incorporation of Results into Mineral Resource Estimate: Evaluate and potentially upgrade the Mineral Resource Estimate based on the latest results. • Leach Performance Review: Review the leach performance of upgraded fines fractions post-screening at 75 µm: • Sighter Bottle Roll Tests: Conduct sighter bottle roll tests using selected Phase 3 drill samples. • Bench Scale Tests: Perform bench scale tests to determine preferred slurry densities and further optimize leach conditions. • Slurry Leach Tests: Conduct slurry leach tests to evaluate slurry handling, filtration, and washing processes. • Impurity Removal Trials: Conduct impurity removal trials under various pH conditions, temperatures, and with different reagents. • Assessment of Resin Use: Evaluate the potential use of resins in both pulp and liquid phases to assist in impurity removal. • Ion Exchange Assessment: Assess ion exchange processes on "leach" liquor and investigate selective elution of REE versus impurities such as Al and Fe. • Nanofiltration Evaluation: Evaluate nanofiltration processes to produce a retentate with increased REE concentration and a permeate containing clean acid for recycling. • Mixed Rare Earth Precipitation: Investigate mixed rare earth precipitation methods, including carbonates and hydroxides. • Process Modelling and Techno-Economic Comparison: Develop process models and conduct technoeconomic comparisons of various flowsheet options. • Mini Pilot Scale Testing: Conduct mini pilot scale testing using composited bulk samples to validate findings on a smaller scale. • Conversion of Rare Earth Carbonate/Hydroxide: Apply process models to assess options for converting mixed rare earth carbonate/hydroxide in a downstream refinery to multiple potential rare earth oxides. 11 Competent Persons Statement Information in this report relating to Exploration Results is based on information reviewed by Mr Jeremy Peters who is a Fellow of the Australasian Institute of Mining and Metallurgy and a Chartered Professional Geologist and Mining Engineer of that organisation. Mr Peters is a Director of Burnt Shirt Pty Ltd, consulting to OD6 and 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 by the 2012 Edition of the Australasian Code for reporting of Exploration Results, Mineral Resources and Ore Reserves. Mr Peters consents to the inclusion of the data in the form and context in which it appears. The information in this report relating to the Mineral Resource estimate for the Splinter Rock Project is extracted from the Company’s ASX announcement dated 18 July 2023. OD6 confirms that it is not aware of any new information or data that materially affects the information included in the original announcement and that all material assumptions and technical parameters underpinning the Mineral Resource estimate continue to apply. Forward Looking Statements Certain information in this document refers to the intentions of OD6 Metals, however these are not intended to be forecasts, forward looking statements, or statements about the future matters for the purposes of the Corporations Act or any other applicable law. Statements regarding plans with respect to OD6 Metals projects are forward looking statements and can generally be identified by the use of words such as ‘project’, ‘foresee’, ‘plan’, ‘expect’, ‘aim’, ‘intend’, ‘anticipate’, ‘believe’, ‘estimate’, ‘may’, ‘should’, ‘will’ or similar expressions. There can be no assurance that the OD6 Metals plans for its projects will proceed as expected and there can be no assurance of future events which are subject to risk, uncertainties and other actions that may cause OD6 Metals actual results, performance, or achievements to differ from those referred to in this document. While the information contained in this document has been prepared in good faith, there can be given no assurance or guarantee that the occurrence of these events referred to in the document will occur as contemplated. Accordingly, to the maximum extent permitted by law, OD6 Metals and any of its affiliates and their directors, officers, employees, agents and advisors disclaim any liability whether direct or indirect, express or limited, contractual, tortuous, statutory or otherwise, in respect of, the accuracy, reliability or completeness of the information in this document, or likelihood of fulfilment of any forward-looking statement or any event or results expressed or implied in any forward-looking statement; and do not make any representation or warranty, express or implied, as to the accuracy, reliability or completeness of the information in this document, or likelihood of fulfilment of any forward-looking statement or any event or results expressed or implied in any forward-looking statement; and disclaim all responsibility and liability for these forward-looking statements (including, without limitation, liability for negligence). This announcement has been authorised for release by the Board of OD6 Metals Limited 12 About OD6 Metals OD6 Metals is an Australian public company pursuing exploration and development opportunities within the critical mineral sector. The Company has successfully identified clay hosted rare earths at its 100% owned Splinter Rock and Grass Patch Projects, which are located in the Esperance-Goldfields region of Western Australia - about 30 to 150km northeast of the major port and town of Esperance. Drilling and geological analysis at its flagship Splinter Rock has shown widespread, thick, high-grade clay hosted REE deposits that extend over hundreds of square kilometres. Metallurgical testing using hydrochloric acid to leach the rare earths have resulted in positive REE recoveries with optimisation ongoing. The Company aims to delineate and define economic resources and reserves of Rare Earth Elements (REE), in particular Neodymium (Nd), Praseodymium (Pr), Dysprosium (Dy) and Terbium (Tb), which can be developed into a future revenue generating mine. Clay REE deposits are currently economically extracted in China, which is the dominant world producer of REEs. REE are becoming increasingly important in the global economy, with uses including advanced electronics and permanent magnets in electric motors. As an example, a neodymium magnet used in a wind turbine or electric vehicle motor is 18 times stronger than a standard ferrite magnet significantly increasing energy use efficiency. As part of the exploration process the Company has entered into heritage agreements with Esperance Tjaltrjraak Native Title Aboriginal Corporation and the Ngadju Native Title Aboriginal Corporation that serves to both enable exploration and protect important cultural sites on Country. Corporate Directory Managing Director Mr Brett Hazelden Non-Executive Chairman Dr Darren Holden Non-Executive Director Mr Piers Lewis Non-Executive Director Dr Mitch Loan Financial Controller/ Joint Company Secretary Mr Troy Cavanagh Joint Company Secretary Mr Joel Ives Exploration Manager Tim Jones Contact OD6 Metals Ltd ACN 654 839 602 www.od6metals.com.au Mail to: info@od6metals.com.au Phone: +61 8 6189 8515 Level 1, 50 Kings Park Road, West Perth, WA 6005 PO Box 277, North Beach, WA 6920 PO Box 2009, Esperance, WA 6450 13 Metallurgical Drill Hole Location Details Hole ID Type Easting Northing RL (m) Dip (degrees) End of Hole (m) SRAC0063 Aircore 494385 6342319 220 -90 60 SRAC0070 Aircore 494143 6343077 234 -90 96 SRAC0152 Aircore 519126 6326958 145 -90 57 SRAC0196 Aircore 494242 6343796 233 -90 64 SRAC0200 Aircore 494845 6343179 224 -90 52 SRAC0203 Aircore 496578 6347447 231 -90 58 SRAC0206 Aircore 496977 6347455 224 -90 60 SRAC0207 Aircore 497116 6340842 227 -90 50 SRAC0214 Aircore 499348 6338551 205 -90 39 SRAC0215 Aircore 499622 6338270 204 -90 55 SRAC0217 Aircore 499898 6337984 207 -90 57 SRAC0218 Aircore 500172 6337697 207 -90 76 SRAC0222 Aircore 501017 6336840 206 -90 41 SRAC0225 Aircore 501815 6336021 204 -90 86 SRAC0226 Aircore 501953 6335879 204 -90 81 SRAC0227 Aircore 502093 6335738 205 -90 93 SRAC0233 Aircore 507414 6330272 174 -90 41 SRAC0234 Aircore 507702 6329972 177 -90 38 SRAC0235 Aircore 507933 6329736 178 -90 55 SRAC0252 Aircore 517664 6325490 159 -90 74 SRAC0256 Aircore 518420 6326266 149 -90 62 SRAC0257 Aircore 518558 6326401 147 -90 50 SRAC0265 Aircore 501677 6336161 204 -90 45 SRAC0266 Aircore 501399 6336445 205 -90 58 SRAC0271 Aircore 496711 6341260 228 -90 47 SRAC0272 Aircore 504874 6332873 196 -90 42 SRAC0273 Aircore 504595 6333162 197 -90 39 SRAC0274 Aircore 495333 6344753 215 -90 78 14 JORC 2012 – Table1: Splinter Rock Section 1 Sampling Techniques and Data (Criteria listed in the preceding section also apply to this section) Criteria JORC Code explanation Commentary Sampling techniques • • • • • Drilling techniques Drill sample recovery • • • • Logging • • • Sub-sampling techniques and sample preparation • • • • • • 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. Drill type (eg core, reverse circulation, openhole hammer, rotary air blast, auger, Bangka, sonic, etc) and details (eg core diameter, triple or standard tube, depth of diamond tails, facesampling bit or other type, whether core is oriented and if so, by what method, etc). 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. 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. 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 subsampling 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. Whether sample sizes are appropriate to the grain size of the material being sampled. • • • • • • • • • • • • • • • • • Geochemical sampling was undertaken by sampling of metre interval samples ret