Announcement PDF ASX ANNOUNCEMENT 14 March 2024 Drilling update from Yinnetharra Highlights: • The Yinnetharra Lithium Project is an early-stage exploration project that covers a large 1,769km2 area (including Farm-In’s) within the Gascoyne Lithium Province of Western Australia o • Maiden Resource Estimate (MRE) of 25.7Mt @ 1% Li2O reported in December 20231 o This MRE is located within a 1.6km section of the 80km strike length of Delta’s prospective stratigraphy at the broader Yinnetharra Lithium Project. o Drilling at the next target area (Jameson) is scheduled to commence during the current Quarter New drilling results in this round of results include4: Yinnetharra o 30m @ 1.9% Li2O from 199m in YRRD0362 at M36 o 24.2m @ 1.4% Li2O from 177m in YDRD038 at M1 o 30m @ 1.43% Li2O from 183m in YRRD0361 at M36 o 43m @ 0.75% Li2O from 286m in YRRD0348 at M1 o 25m @ 1% Li2O from 35m in YRRD0336 at M1 Delta Lithium Limited (ASX: DLI) (“Delta” or the “Company”), is pleased to announce an update for the ongoing drilling activities at its Lithium Project at Yinnetharra in the Gascoyne region of Western Australia. Drilling at the Malinda Prospect continues to demonstrate quality lithium intercepts from surface with the dominant lithium bearing mineral being spodumene. Recent highlights can be seen below in Table 1 and Figure 2, with a full list of recent results in Appendix 1 and 2. Commenting on the results Managing Director, James Croser said; “Malinda continues to provide excellent results that highlight the enormous potential our geologists have been talking about since the initial acquisition in late 2022. This confidence has only grown as each round of drilling results have been incorporated into our geological model. An initial heritage survey has been completed at Jamesons around the immediate locale of our first pass drilling program. This is planned to commence in late March, drilling the high-value geochem anomalism and LCT pegmatite outrcrop, and upon receipt of the POW which is imminent.” Yinnetharra Exploration The Yinnetharra project is an early-stage exploration project in the Gascoyne region of Western Australia targeting Lithium mineralisation. Delta Lithium has 1,769km2 of tenure owned outright and as Farm-in Joint Ventures. A maiden MRE was released in December 2024 of 25.7Mt @ 1% Li2O1. The recently executed Farm-In Joint Venture Agreement have expanded the prospective stratigraphy to over 80km in length. 1. Refer ASX Announcement 27 December 2023 titled ‘Yinnetharra Lithium Project Maiden Mineral Resource Estimate’ 2. 3. Refer ASX Announcement 3 October 2023 titled ‘Mt Ida Mineral Resource Estimate Update’ Refer to Appendix 1 for full drill hole information ASX ANNOUNCEMENT 14 March 2024 Figure 1: Location of Yinnetharra Project The Company is actively exploring at the Yinnetharra Project with four drill rigs currently operating at Malinda and multiple field teams undertaking geological mapping and surface sampling in order to further define target prospects. Drilling completed to date at Malinda has demonstrated quality lithium intercepts from surface with the dominant lithium bearing mineral being spodumene. Recent highlights can be seen below in Table 1 and Figure 2, with a full list of recent results in Appendix 1 and 2. HoleID YRRD362 YRRD361 YDRD038 YRRD348 YRRD336 YDRD039 YRRD340 YRRD330 YRRD326 YRRD310 From 199 183 177 286 35 199 72 84 72 264 To 229 213 201 329 60 216 95 103 88 281 Length 30 30 24 43 25 17 23 19 16 17 Li2O pct Ta2O5 ppm Fe2O3 pct 1.9 160 1.07 1.43 178 0.78 1.41 110 4.38 0.75 42 1.39 1.01 85 0.85 1.25 80 2.22 0.92 61 1.11 0.95 59 1.28 1.06 54 0.96 0.95 42 4.03 ASX ANNOUNCEMENT 14 March 2024 HoleID YRRD332 YRRD353 YRRD392 YRRD334 From 54 225 38 38 To 74 240 53 50 Length 20 15 15 12 Li2O pct Ta2O5 ppm Fe2O3 pct 0.7 60 1.28 0.86 90 2.42 0.82 54 0.55 0.95 66 1.70 Table 1: Highlight of recent drilling results from Yinnetharra Lithium resources are largely present in 3 main pegmatites at Malinda from surface to a depth of >300m. Metallurgical test work is ongoing with initial results demonstrating the potential for high recovery of spodumene to high grade concentrates2. Figure 2: Plan showing block models with selected recent intercepts Exploration is ongoing at Yinnetharra with additional groundwork commencing within the recently acquired RR1 and VSR tenements. Drilling at the Jamesons Prospect (Figure 3) is scheduled to start this quarter utilising an RC rig, accessed and supported from the Malinda Camp. The Jamesons Prospect has very consistent high tenor lithium in soil anomalies with rock chips up to 4% Li2O and coarse spodumene within outcropping pegmatites at surface. The area has been mapped extensively in preparation for the upcoming drill program. ASX ANNOUNCEMENT 14 March 2024 Figure 3: Plan showing Jamesons Prospect with drill locations Release authorised by the Managing Director on behalf of the Board of Delta Lithium Limited. For further information, please contact: Delta Lithium James Croser, Managing Director Peter Gilford, CFO & Company Secretary +61 8 6109 0104 info@deltalithium.com.au Investor/Media Enquiries Citadel-MAGNUS Michael Weir +61 402 347 032 Jono van Hazel +61 411 564 969 ASX ANNOUNCEMENT 14 March 2024 About Delta Lithium Delta Lithium (ASX: DLI) is an exploration and development company focused on bringing high-quality, lithium-bearing pegmatite deposits, located in Western Australia, into production. With current global JORC compliant resources of 40.4Mt@1.1%Li2O, strong balance sheet and an experienced team driving the exploration and development workstreams, Delta Lithium is rapidly advancing its Lithium Projects. The Mt Ida Lithium Project holds a critical advantage over other lithium developers with existing Mining Leases and an approved Mining Proposal. Delta Lithium is pursuing a development pathway to unlock maximum value for shareholders. Delta Lithium also holds the highly prospective Yinnetharra Lithium Project that is already showing signs of becoming one of Australia’s most exciting lithium regions. The Company has recommenced exploration activities at Yinnetharra in the new calendar year, and an extensive multi-rig campaign will be ongoing throughout 2024 to test additional targets and build on the Maiden Resource released in December 2023. Competent Person's Statement Information in this Announcement that relates to exploration results is based upon work undertaken by Mr. Charles Hughes, a Competent Person who is a Member of the Australasian Institute of Mining and Metallurgy (AUSIMM). Mr. Hughes has sufficient experience that 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’ (JORC Code). Mr. Hughes is an employee of Delta Lithium Limited and consents to the inclusion in this announcement of the matters based on his information in the form and context in which it appears. Refer to www.deltalithium.com.au for past ASX announcements. Past Exploration results and Mineral Resource Estimates reported in this announcement have been previously prepared and disclosed by Delta Lithium in accordance with JORC 2012. The Company confirms that it is not aware of any new information or data that materially affects the information included in these market announcements. The Company confirms that the form and content in which the Competent Person's findings are presented here have not been materially modified from the original market announcement, and all material assumptions and technical parameters underpinning Mineral Resource Estimates in the relevant market announcement continue to apply and have not materially changed. Refer to www.deltalithium.com.au for details on past exploration results and Mineral Resource Estimates. Disclaimer This release may include forward-looking and aspirational statements. These statements are based on Delta Lithium management’s expectations and beliefs concerning future events as of the time of the release of this announcement. Forward-looking and aspirational statements are necessarily subject to risks, uncertainties and other factors, some of which are outside the control of Delta Lithium, which could cause actual results to differ materially from such statements. Delta Lithium makes no undertaking to subsequently update or revise the forward looking or aspirational statements made in this release to reflect events or circumstances after the date of this release, except as required by applicable laws and the ASX Listing Refer to www.deltalithium.com.au for past ASX announcements. ASX ANNOUNCEMENT 14 March 2024 Delta Lithium Group Mineral Resource estimate Cut-off Resource category Mt Ida Ta2O5 grade Tonnes Grade Li2O Grade (Li2O%) (Mt) (% Li2O) (Kt) (Ta2O5 ppm) - - - - 6.7 1.0 65 51 19.0 1.0 181 67 Total Resource 25.7 1.0 246 62 Measured - - - - 7.8 1.3 104 224 6.8 1.1 76 154 14.6 1.2 180 191 Total Measured - - - - Total Indicated 14.5 1.2 169 144 Total Inferred 25.8 1.0 257 90 Total 40.4 1.1 426 109 Measured Yinnetharra Li2O Indicated Inferred Indicated Inferred Total Resource 0.5 0.5 Notes: Tonnages and grades have been rounded to reflect estimate. Inconsistencies in the totals are due to rounding. the relative uncertainty of the ASX ANNOUNCEMENT 14 March 2024 Appendix 1 Recent Drilling Information HoleID YDRD034 YDRD034 YDRD036 YDRD037 YDRD038 YDRD039 YDRD040 YDRD041 YDRD042 YRRD302 YRRD304 YRRD306 YRRD308 YRRD310 YRRD310 YRRD312 YRRD314 YRRD315 YRRD316 YRRD320 YRRD320 YRRD321 YRRD322 YRRD323 YRRD325 YRRD325 YRRD325 YRRD326 YRRD327 YRRD328 YRRD329 YRRD330 YRRD330 YRRD331 YRRD332 YRRD333 YRRD333 YRRD334 YRRD335 YRRD336 YRRD337 YRRD338 YRRD339 YRRD340 YRRD341 From To Length Li2O pct Ta2O5 ppm Fe2O3 pct and 227.14 234.29 7.15 0.72 166 0.39 211.45 216.4 4.95 0.5 51 4.95 no significant results no significant results 177.36 201.54 24.18 1.41 110 4.38 199 216.05 17.05 1.25 80 2.22 98.29 114.25 15.96 0.65 38 0.81 no significant results no significant results no significant results no significant results no significant results 244 252 8 1.08 53 1.72 264 281 17 0.95 42 4.03 and 320 325 5 1.24 38 0.75 no significant results no significant results no significant results 70 75 5 0.79 36 0.51 and 108 118 10 0.88 27 0.63 99 102 3 0.56 38 0.62 no significant results no significant results no significant results and 133 149 16 0.44 83 0.83 0 8 8 0.43 39 2.26 and 123 126 3 0.68 63 0.94 72 88 16 1.06 54 0.96 162 167 5 0.55 80 0.77 no significant results no significant results 84 103 19 0.95 59 1.28 and 108 118 10 0.33 6 8.55 no significant results 54 74 20 0.7 60 1.28 and 153 166 13 0.63 44 0.75 143 146 3 0.41 46 13.11 38 50 12 0.95 66 1.70 no significant results 35 60 25 1.01 85 0.85 no significant results 89 103 14 0.54 50 0.68 no significant results 72 95 23 0.92 61 1.11 no significant results ASX ANNOUNCEMENT 14 March 2024 HoleID YRRD342 YRRD343 YRRD344 YRRD345 YRRD346 YRRD347 YRRD348 YRRD349 YRRD350 YRRD351 YRRD352 YRRD353 YRRD354 YRRD355 YRRD356 YRRD357 YRRD358 YRRD358 YRRD359 YRRD360 YRRD361 YRRD362 YRRD363 YRRD364 YRRD365 YRRD366 YRRD367 YRRD368 YRRD368 YRRD369 YRRD370 YRRD371 YRRD372 YRRD373 YRRD374 YRRD374 YRRD375 YRRD376 YRRD377 YRRD378 YRRD379 YRRD380 YRRD381 YRRD382 YRRD383 YRRD384 From To Length Li2O pct Ta2O5 ppm Fe2O3 pct no significant results no significant results no significant results no significant results 279 294 15 0.58 47 0.95 no significant results 286 329 43 0.75 42 1.39 no significant results no significant results no significant results no significant results 225 240 15 0.86 90 2.42 294 302 8 0.59 51 1.16 no significant results 288 302 14 0.68 67 2.74 no significant results and 318 321 3 0.55 82 1.79 309 312 3 0.54 62 1.56 no significant results no significant results 183 213 30 1.43 178 0.78 199 229 30 1.9 160 1.07 239 242 3 0.73 151 1.14 no significant results no significant results and 240 229 no significant results no significant results no significant results 24 60 48 and 66 Assay not received Assay not received Assay not received no significant results 45 74 not sampled no significant results Assay not received 253 233 13 4 0.51 0.46 77 118 9.42 0.71 29 63 52 69 5 3 4 3 1.1 0.56 0.95 0.97 80 186 166 86 0.81 0.99 1.20 0.78 60 15 0.4 86 7.95 85 11 0.76 130 3.84 ASX ANNOUNCEMENT 14 March 2024 HoleID YRRD385 YRRD386 YRRD387 YRRD388 YRRD389 YRRD390 YRRD391 YRRD392 YRRD393 YRRD394 YRRD395 YRRD396 YRRD397 YRRD398 YRRD399 YRRD400 YRRD401 YRRD402 YRRD403 YRRD404 YRRD405 YRRD406 YRRD407 YRRD408 YRRD409 YRRD410 HOLEID YDRD034 YDRD036 YDRD037 YDRD038 YDRD039 YDRD040 YDRD041 YDRD042 YRRD302 YRRD304 YRRD306 YRRD308 YRRD310 YRRD312 YRRD314 YRRD315 From To Length Li2O pct Ta2O5 ppm Fe2O3 pct Assay not received Assay not received not sampled Assay not received Assay not received Assay not received no significant results Assay not received 38 53 15 0.82 54 0.55 not sampled no significant results no significant results no significant results 71 74 3 0.8 31 7.54 Assay not received Assay not received Assay not received Assay not received Assay not received Assay not received Assay not received Assay not received Assay not received Assay not received Assay not received Assay not received 201 217 16 0.36 108 5.40 DEPTH 279.66 321.76 246.54 264.4 243.7 150.78 192.41 237.8 210 240 270 312 360 180 54 90 EAST 426351.00 426371.00 426351.38 426271.00 426446 425671 425711 425951 427325 427325 427325 427325 427325 426525 426476 425831 NORTH RL AZIMUTH DIP 7289283.00 319.0 356.89 -60.01 7289243.00 318.0 11.24 -60.57 7289383.00 320.0 4.8 -63.94 7289347.00 324.0 0.38 -60.9 7289337 319.6 359.15 -59.75 7289410 324.3 1.03 -64.21 7289323 326.4 3.24 -61.5 7289323 326.6 0.24 -59.81 7288858 327 358.55 -55.92 7288818 329 358.96 -55.01 7288778 331 0.89 -54.09 7288738 331 353.88 -47.65 7288700 330 0 -55 7288707 317 357.93 -60.27 7288891 317 0.7 -59.92 7289463 327 357.99 -62.2 ASX ANNOUNCEMENT 14 March 2024 HOLEID YRRD316 YRRD320 YRRD321 YRRD322 YRRD323 YRRD325 YRRD326 YRRD327 YRRD328 YRRD329 YRRD330 YRRD331 YRRD332 YRRD333 YRRD334 YRRD335 YRRD336 YRRD337 YRRD338 YRRD339 YRRD340 YRRD341 YRRD342 YRRD343 YRRD344 YRRD345 YRRD346 YRRD347 YRRD348 YRRD349 YRRD350 YRRD351 YRRD352 YRRD353 YRRD354 YRRD355 YRRD356 YRRD357 YRRD358 YRRD359 YRRD360 YRRD361 YRRD362 YRRD363 YRRD364 YRRD365 DEPTH 102 240 180 156 138 174 210 203 192 215 210 150 168 197 102 161 114 108 198 132 168 200 108 187 354 204 384 204 378 198 486 186 276 270 366 216 360 210 365 282 228 246 288 270 306 240 EAST 426481 426476 425871 426564 425871 425871 426564 425871 426564 425871 426827 425911 426853 425911 426890 425951 426872 425951 426844 425951 426883 426191 426954.67 426191 427005 426191 427243 426191 427325 426231.38 427310 426231 427399 426231.25 427325 426271 427400 426271 427485 426271 426391 426310.66 426381 426309.78 426431 426349.48 NORTH 7288819 7288731 7289463 7288907 7289423 7289383 7288827 7289343 7288787 7289303 7288876 7289403 7288910 7289343 7288943 7289503 7288931 7289443 7288870 7289403 7288884 7289443 7288916.13 7289403 7288578 7289363 7288690 7289263 7288668 7289402.66 7288540 7289442 7288789 7289263.62 7288668 7289443 7288697 7289403 7288700 7289263 7289383 7289324.84 7289303 7289240.74 7289243 7289383.79 RL 317 316 327 319 327 327.9 319.3 328.1 310 328.5 322 327.8 321.2 327.7 320.8 326.8 320.9 327.3 321.8 327.9 322 325.8 322 327.3 324 328.2 329 322.5 330 325.48 330 324 333 322.45 330 323.1 333 323.1 330 321 319 320.71 318.8 319.42 319 320.64 AZIMUTH DIP 2.83 -59.3 0.38 -60.96 358.35 -61.95 359.75 -61.08 358.62 -61.74 1.07 -63.14 357.08 -58.16 1.85 -60.43 0.4 -60.05 358.44 -66.33 341.74 -62.12 357.2 -60.99 350.67 -59.79 359.12 -60.46 345.65 -60.11 358.35 -61.26 10.28 -59.72 359.75 -60.95 0.43 -56.16 357.7 -60.13 0.25 -54.96 0.25 -59.95 14.17 -55.52 358.5 -59.53 358.18 -57.76 359.4 -58.99 359.59 -69.45 1.49 -59.25 357.95 -57.74 359.61 -68.79 1.6 -57.77 357.83 -65.81 5.59 -58.09 357.88 -65.19 358.31 -65.76 357.95 -65.04 359.62 -57.55 355.93 -63.83 359.7 -62.47 359.43 -62.79 1.99 -62.74 358.92 -65.71 5.51 -63.91 1.07 -63.76 3.79 -63.77 358.08 -63.28 ASX ANNOUNCEMENT 14 March 2024 HOLEID YRRD366 YRRD367 YRRD368 YRRD369 YRRD370 YRRD371 YRRD372 YRRD373 YRRD374 YRRD375 YRRD376 YRRD377 YRRD378 YRRD379 YRRD380 YRRD381 YRRD382 YRRD383 YRRD384 YRRD385 YRRD386 YRRD387 YRRD388 YRRD389 YRRD390 YRRD391 YRRD392 YRRD393 YRRD394 YRRD395 YRRD396 YRRD397 YRRD398 YRRD399 YRRD400 YRRD401 YRRD402 YRRD403 YRRD404 YRRD405 YRRD406 YRRD407 YRRD408 YRRD409 YRRD410 DEPTH 354 300 288 210 100 100 82 88 106 100 112 184 222 106 172 140 28 232 238 232 154 40 161 298 401 367 89 77 89 107 119 95 89 125 137 155 185 191 209 251 35 293 215 233 252 EAST 426431 426345.81 426471 426391 425752.39 425757.82 425789.93 425796.29 425828.39 425829.21 425946.03 425950.87 425955.55 425989.37 425987.99 426029.67 426071.73 426036.85 426079.36 426117.25 426150.17 426196 426223.35 426239.3 427485 427485 425471.38 425511 425511 425511.38 425511.38 425569.76 425542 425545 425548.85 425631.39 426479 426476 426476 426551.38 426551 426561 426591 426591 426471 NORTH 7289183 7289240.54 7289283 7289423 7289858.04 7289903.74 7289863.15 7289898.15 7289861.95 7289888.45 7289778.48 7289851 7289879.49 7289775.33 7289821.29 7289778.08 7289785.01 7289855.27 7289859.23 7289819.5 7289761.74 7289774 7289748.75 7289813.82 7288660 7288620 7289382.66 7289482 7289442 7289402 7289362 7289465.96 7289442 7289402 7289362.7 7289393.48 7288673 7288620 7288590 7289342.66 7289303 7289303 7289375 7289363 7289323 RL AZIMUTH DIP 318.5 7.12 -64.77 318.78 359.65 -64.03 321 4.98 -65.81 320 2.92 -63.68 321.19 186.54 -61.46 320.49 187.1 -60.88 321.44 205.83 -60.72 320.14 190.45 -60.19 321.36 169.2 -64.35 320.79 172.67 -64.78 325.24 188.98 -59.82 322.45 177.95 -60.24 321.99 180.37 -61.21 325.7 184.67 -60.42 323.36 181.26 -60.33 325.13 185.1 -60.46 324.95 185.95 -55.4 322.53 185.87 -59.52 322.38 181.77 -61.23 323.2 180.42 -60.21 323.76 183.21 -60.38 323.1 182.1 -61.99 323.43 180.81 -61.2 322.24 180.52 -65.95 330 3.36 -63.26 330 7.16 -64.22 323.22 359.96 -59.92 321 355.52 -60.16 322 356.26 -60.18 322.9 355.38 -60.08 323.6 358.56 -59.9 322.4 2.36 -69.6 322.2 20.29 -65.95 322.8 14.63 -67.68 323.45 13.8 -69.29 323.57 3.43 -65.22 317 0.69 -54.97 317 0.84 -64.36 317 1.18 -64.37 323.73 11.7 -64.78 324 12.88 -63.08 324 9.18 -63.16 323 0.98 -57.44 323 3.51 -60.99 321 9.65 -65.66 ASX ANNOUNCEMENT 14 March 2024 JORC Code, 2012 Edition Table 1; Section 1: Sampling Techniques and Data Yinnetharra Criteria Explanation 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 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, openhole 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). Commentary • • • • • • • • • • Diamond (DD) and reverse circulation (RC) drilling has been carried out by DLI Metals at the Yinnetharra project RC samples are collected from a static cone splitter mounted directly below the cyclone on the rig DD sampling is carried out to lithological/alteration domains with lengths between 0.3-1.1m Limited historic data has been supplied, reverse circulation (RC) drilling and semi-quantative XRD analysis have been completed at the Project. Historic drilling referenced has been carried out by Segue Resources and Electrostate (prior holder) Historic sampling of RC drilling has been carried out via a static cone splitter mounted beneath a cyclone return system to produce a representative sample, or via scoop These methods of sampling are considered to be appropriate for this style of exploration Diamond drilling is being carried out by DDH1 utilising a Sandvik DE880 truck mounted multipurpose rig and is HQ or NQ diameter. RC drilling is carried out by Precision Exploration Drilling (PXD) using a Schramm 850 rig Some RC precollars have been completed, diamond tails are not yet completed on these holes Historic RC drilling was completed using a T450 drill rig with external booster and auxiliary air unit, or unspecified methods utilising a 133mm face sampling bit It is assumed industry standard drilling methods and equipment were utilised for all drilling ASX ANNOUNCEMENT 14 March 2024 Criteria Explanation 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. Commentary • • • • • 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. • • • • • • Sample condition is recorded for every RC drill metre including noting the presence of water or minimal sample return, inspections of rigs are carried out daily Recovery on diamond core is recorded by measuring the core metre by metre Poor recoveries were occasionally encountered in near surface drilling of the pegmatite due to the weathered nature Historic RC recoveries were visually estimated on the rig, bulk reject sample from the splitter was retained on site in green bags for use in weighing and calculating drill recoveries at a later date if required Sample weights were recorded by the laboratory Quantitative and qualitative geological logging of drillholes adheres to company policy and includes lithology, mineralogy, alteration, veining and weathering Diamond core and RC chip logging records lithology, mineralogy, alteration, weathering, veining, RQD, SG and structural data All diamond drillholes and RC chip trays are photographed in full A complete quantitative and qualitative logging suite was supplied for historic drilling including lithology, alteration, mineralogy, veining and weathering No historic chip photography has been supplied Logging is of a level suitable to support Mineral resource estimates and subsequent mining studies ASX ANNOUNCEMENT 14 March 2024 Criteria Explanation 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. Whether sample sizes are appropriate to the grain size of the material being sampled. Commentary • • • • • • • 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. Nature of quality control procedures adopted (e.g. standards, blanks, duplicates, external laboratory checks) and whether acceptable levels of accuracy (i.e. lack of bias) and precision have been established. 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. • • • • • • • . • DD sampling is undertaken by lithological/alteration domain to a maximum of 1.1m and a minimum of 0.3m. Core is cut in half with one half sent to the lab and one half retained in the core tray Occasional wet RC samples are encountered, extra cleaning of the splitter is carried out afterward RC and core samples have been analysed for Li suite elements by ALS Laboratories, Samples are crushed and pulverised to 85% passing 75 microns for peroxide fusion digest followed by ICPOES or ICPMS determination Historic RC sampling methods included single metre static cone split from the rig or via scoop from the green bags, field duplicates were inserted at a rate of 1:20 within the pegmatite zones Historic samples were recorded as being mostly dry Historic samples were analysed by Nagrom or ALS Laboratories where 3kg samples were crushed and pulverised to 85% passing 75 microns for a sodium peroxide fusion followed by ICP-MS determination for 25 elements. Semi-Quantitative XRD analysis was carried out by Microanalysis Australia using a representative subsample that was lightly ground such that 90% was passing 20 µm to eliminate preferred orientation Samples have been analysed by an external laboratory utilising industry standard methods The assay method utilised by ALS for core sampling allows for total dissolution of the sample where required Standards and blanks are inserted at a rate of 1 in 20 in RC and DD sampling, all QAQC analyses were within tolerance The sodium peroxide fusion used for historic assaying is a total digest method All historic samples are assumed to have been prepared and assayed by industry standard techniques and methods In the historic data field duplicates, certified reference materials (CRMs) and blanks were inserted into the sampling sequence at a rate of 1:20 within the pegmatite zone Internal standards, duplicates and repeats were carried out by Nagrom and ALS as part of the assay process No standards were used in the XRD process ASX ANNOUNCEMENT 14 March 2024 Criteria Explanation Verification of sampling and assaying The verification of significant intersections by either independent or alternative company personnel. The use of twinned holes. Documentation of primary data, data entry procedures, data verification, data storage (physical and electronic) protocols. Discuss any adjustment to assay data Commentary • • • • • Location of data points Accuracy and quality of surveys used to locate drill holes (collar and down-hole surveys), trenches, mine workings and other locations used in Mineral Resource estimation. Specification of the grid system used. Quality and adequacy of topographic control • • • • • Data spacing and distribution Orientation of data in relation to geological structure Sample security Data spacing for reporting of Exploration Results. Whether the data spacing and distribution is sufficient to establish the degree of geological and grade continuity appropriate for the Mineral Resource and Ore Reserve estimation procedure(s) and classifications applied. Whether sample compositing has been applied. Whether the orientation of sampling achieves unbiased sampling of possible structures and the extent to which this is known, considering the deposit type. If the relationship between the drilling orientation and the orientation of key mineralised structures is considered to have introduced a sampling bias, this should be assessed and reported if material • • • Drill holes were orientated to intersect the pegmatite zones as close to perpendicular as possible; drill hole orientation is not considered to have introduced any bias to sampling techniques utilised as true orientation of the pegmatites is yet to be determined The measures taken to ensure sample security • Samples are prepared onsite under supervision of DLI Metals staff and transported by a third party directly to the laboratory Historic samples were collected, stored, and delivered to the laboratory by company personnel • • Audits or reviews Significant intercepts have been reviewed by senior personnel Some holes in the current diamond program have been designed to twin historic RC drillholes and verify mineralised intercepts Primary data is collected via excel templates and thirdparty logging software with inbuilt validation functions, the data is forwarded to the Database administrator for entry into a secure SQL database Historic data was recorded in logbooks or spreadsheets before transfer into a geological database No adjustments to assay data have been made other than conversion from Li to Li2O and Ta to Ta2O5 Drill collars are located using a handheld GPS unit, all holes will be surveyed by third party contractor once the program is complete GDA94 MGA zone 50 grid coordinate system was used Downhole surveys were completed by DDH1 and PXD using a multishot tool Historic collars were located using handheld Garmin GPS u