Announcement PDF Dart Mining NL ABN: 84 119 904 880 Level 6, 412 Collins Street Melbourne VIC 3000 Contact: James Chirnside Email: jchirnside@dartmining.com.au Mobile: +61 447 447 613 Webpage: www.dartmining.com.au LinkedIn: Dart Mining NL Twitter: @DartMining 1 | P a g e ASX Release - 16 September 2026 HIGH-GRADE TIN & TANTALUM CONFIRMED AT WALWA HIGHLIGHTS • Assays received for the four samples collected from the historic Walwa (Mt Alwa) Tin Mine in June 2026 (refer to announcement dated 25 June 20261 ): – 3.96% Sn, 165 ppm Ta and 197 ppm Nb in sample WWP002, an in-situ grab sample of cassiterite-bearing pegmatite from the south-west wall of the historic Walwa open pit. – 1.09% Sn in WWP001, a float boulder of greisenous pegmatite on the floor of the pit. – 0.61% Sn in WWP003, float of the upper dyke immediately north of the pit. – 0.40% Sn in WAS001, an outcrop grab sample of the 5–8 m thick sub-horizontal pegmatite dyke at Mt Alwa South, 700 m south of the pit. • All four samples are elevated in lithium (31–170 ppm), rubidium (871–2,611 ppm) and caesium (50–156 ppm), consistent with a highly fractionated, tin-tantalum specialised pegmatite system. • Historical sampling* supports the new high-grade results, returning up to 2.91% Sn at Mt Alwa South7 , 0.39% Sn at the Walwa pit8,9 and 0.44% Sn with up to 670 ppm Ta at Snake Gully10 , highlighting further tin-tantalum exploration upside. • Maiden diamond drilling at Walwa is scheduled to commence in October 2026, with preparations well advanced across nine proposed drill sites. Dart Mining NL (ASX:DTM) (Dart Mining or the Company) is pleased to report assay results for the four rock chip samples collected during the June 2026 site visit to the historic Walwa (also known as Mt Alwa) tin mine on EL007426 in Northeast Victoria (the Project), together with a compilation of historical rock chip sampling from the Walwa tin mine area* . The results confirm high-grade tin, with elevated tantalum, niobium, lithium, rubidium and caesium, in the cassiterite-bearing aplite- pegmatite dykes that were mined at Walwa and support the drilling targets announced on 25 August 20262 . *The historical results in this release have been extracted from reports lodged with the Geological Survey of Victoria by previous explorers, as referenced. They have not been independently verified by the Company. The Competent Person has reviewed the reports and considers the results to be a reasonable representation of the historical sampling, but readers are cautioned that the sampling was selective, and the JORC Table 1 in Appendix 2 should be read in full. 2 | P a g e Dart Mining's Chairman, James Chirnside, commented: "Almost 4% tin in a rock sample taken from the wall of the old Walwa pit is a very encouraging result, and it sits alongside decades of historical sampling that tells the same story: that the Walwa dykes are rich in tin, and associated tantalum and niobium. This gives Dart Mining real confidence as we finalise the deep drilling program designed to test for a larger tin-bearing greisen system beneath the historic workings." Dart holds 100% owned granted tenements at Walwa (EL007426 – 499 sq.km), Cudgewa (EL006866 – 508 sq.km) and Berringama (EL007170 – 27 sq.km) which are shown in Figure 1. Walwa has the highest recorded primary tin production in Victoria3,4 , principally from the Walwa (Mt Alwa) tin mine, with limited production from the Mt Alwa South and Bounce workings. Mt Alwa was last mined in the late 1960s when approximately 97,000 t of ore was treated from the open pit3 . Figure 1: Tenement location showing historic tin and tungsten mines and prospects 3 | P a g e WALWA TIN MINE ROCK CHIP RESULTS Four rock chip samples were collected by Dart Mining personnel in June 20261 : three from the historic Walwa open pit and one from the Mt Alwa South prospect approximately 700 m to the south-south-west (Figure 2). The samples were submitted to Intertek Genalysis in Townsville and analysed for tin and tungsten by sodium peroxide fusion with ICP-MS finish (a total digest suitable for cassiterite), for a 62-element suite by four-acid digest ICP-MS. Results are summarised in Table 1 and the full multi-element results are given in Appendix 1. Table 1: Rock chip sample results, Walwa tin mine area, EL007426 (GDA94 / MGA Zone 55). Sn and W by fusion ICP- MS; other elements by four-acid ICP-MS. Sample ID Location Sample type Easting Northing Sn % SnO₂ ppm Ta ppm Ta₂O₅ ppm Nb ppm Nb₂O₅ ppm W ppm Li ppm Rb ppm Cs ppm WAS001 Mt Alwa South Outcrop (grab) 563551 6020217 0.40% 5,034 24 30 35 50 <1 39 909 50 WWP001 Walwa tin mine - pit floor (south) Float (boulder) 564026 6020942 1.09% 13,838 70 85 81 115 3 31 871 50 WWP002 Walwa tin mine - SW pit wall Outcrop (in-situ grab) 564016 6020944 3.96% 50,274 165 202 197 281 9 89 1,801 105 WWP003 Walwa tin mine - north of pit Float 563987 6021105 0.61% 7,779 29 35 45 65 <1 170 2,611 156 Oxide equivalents calculated as SnO₂ = Sn ÷ 0.7877, Ta₂O₅ = Ta ÷ 0.8190, Nb₂O₅ = Nb ÷ 0.6990. Ta and Nb were determined by four-acid digest, which may not fully dissolve tantalite-columbite. The Ta and Nb values should therefore be regarded as minimum values. Rb for WWP003 reported by the laboratory's over-range method (Rb-Rp1). The highest grade sample, WWP002 (3.96% Sn), is an in-situ grab sample of pegmatite with abundant coarse black cassiterite that forms part of the south-west wall of the pit and is interpreted to be a remnant of the upper dyke ore mined in the 1960s. WWP001 (1.09% Sn) is a boulder of greisenous pegmatite from the floor of the southern end of the pit and WWP003 (0.61% Sn) is float from the upper dyke immediately outside the northern pit wall. At Mt Alwa South, an outcrop grab sample of the sub-horizontal pegmatite dyke (WAS001) returned 0.40% Sn. The samples are selective grab samples of visibly mineralised rock and are not representative of the average grade of the dykes they do, however, confirm that the black mineral observed in the field is cassiterite and that high tin grades occur within the greisenised and pegmatitic phases of the dykes. Tantalum and niobium are elevated in all samples (24-165 ppm Ta and 35-197 ppm Nb) and increase with tin grade, consistent with tantalum being hosted partly within cassiterite and partly as tantalite-columbite, as described by previous explorers8,9 . The samples are also strongly enriched in lithium, rubidium and caesium, with WWP003 returning 170 ppm Li, 2,611 ppm Rb and 156 ppm Cs. High Rb and Cs in K-feldspar and muscovite are characteristic of highly fractionated, rare-metal pegmatites and support the Company's interpretation that the Walwa dykes are late-stage fractionates of a buried granite cupola. Tungsten is low in all samples (≤9 ppm), confirming that the Walwa dykes are a tin-tantalum system rather than a tin-tungsten system. Tungsten potential within the tenements lies in the separate scheelite-bearing lode systems at McHargs6 and Koetong (Figure 1). 4 | P a g e Figure 2: Plan showing rock chip sample locations, Walwa tin mine area, showing the June 2026 samples (red stars), historical rock chip samples with published or digitised locations (green and blue circles, sized by tin grade, orange diamonds are the Union Corp samples) and historic drill collars. GDA94 / MGA Zone 55. 5 | P a g e Figure 3: Sample WWP002 (3.96% Sn) - coarse black cassiterite in pegmatite from the south-west wall of the historic Walwa open pit Figure 4: Sample WWP001 (1.09% Sn) - cassiterite in a greisenous pegmatite boulder from the floor of the historic Walwa open pit 6 | P a g e Figure 5: Sample WWP003 (0.61% Sn) - cassiterite in coarse aplite-pegmatite from outside the northern pit wall (left) and sample WAS001 (0.40% Sn) from the Mt Alwa South dyke (right) HISTORICAL ROCK CHIP SAMPLING As part of the digital compilation of the Walwa exploration record, the Dart Mining has reviewed the rock chip sampling reported by previous explorers in reports lodged with the GSV. Five programs contain rock chip results from the Walwa tin mine area with sufficient documentation to be reported. Highlights are given in Table 2 and the full compilation, with sample descriptions and coordinates, is provided in Appendix 1 (Table A2). Locations reported in the AGD66/AMG grid have been converted to GDA94/MGA Zone 55 using the same local shift applied to the Walwa drill hole database. The 1981 Union Corporation samples, previously located only on the R.B. Mining local mine grid, have been assigned GDA94/MGA Zone 55 coordinates by georeferencing the November 1980 Walwa tin field plan on its labelled drill collars and digitising the sample symbols from the 1981 Mount Alwa South plan7 . Those positions are accurate to approximately ±25 m • Union Corporation (Australia), 19817 : 25 single-phase rock chips from the Mt Alwa South sill averaged 845 ppm Sn and 103 ppm Ta (aplite and pegmatite phases), with a greisen sample returning 2.91% Sn and a second greisen sample 610 ppm Ta. A pegmatite sample from the "Walwa Tin Field" returned 0.23% Sn, 90 ppm Ta and 80 ppm Nb. Locations were reported on a local mine grid only and have now been converted to GDA94/MGA Zone 55 by Dart Mining (±25 m). Union also reported that a 15 m chip-channel across the dyke on a bulldozed bench at Mt Alwa South averaged 0.096% Sn and 172 ppm Ta (R.B. Mining, 19795 ); • Tantalum Australia NL, 20019 : 33 rock chips of pegmatite outcrop analysed by fusion XRF at SGS Perth. Samples from the Walwa pit area returned 0.13–0.39% Sn (W011 0.50% SnO₂, W013 0.49% SnO₂), and the program identified tantalum enrichment away from the pit: W021 at Mt Alwa South returned 0.48% Ta₂O₅ (0.39% Ta) with 0.19% Sn and 460 ppm Nb₂O₅, and W030 at Redbank Creek returned 670 ppm Ta₂O₅ with 0.32% Sn. Sample locations have been digitised from the report plan (±25 m)8 ; 7 | P a g e • J.M. Brady, 2004–200610 : 36 outcrop samples of a vertical 0.5 m pegmatite sill in the Bounce pit and of aplite 80 m to its north returned 0.15% and 0.23% Sn, extending the Bounce mineralisation at least 150 m north of the workings. At Snake Gully, 1.5 km west of the pit, outcrop samples of albitite dykes (1-3 m wide) returned 0.44% and 0.26% Sn, and mullock samples with mauve lithium-mica returned 670 ppm and 490 ppm Ta with up to 399 ppm Cs. Dump and detritus samples south of the pit returned 0.43-0.92% Sn and up to 280 ppm Ta, a quartz vein float sample at the Amphitheatre returned 2.7% Sn (as stannite), and pit-debris from quartz veins at Willsburn, 500 m south of Mt Alwa South, returned up to 0.83% Sn; • Queensland Gold & Minerals Ltd, 200811 : 167 composite rock chip samples taken as random chips over outcrop and dumps and as traverse chips across exposed faces over the 70 ha prospect area, analysed by ALS Chemex (Table 3). The Walwa pit area averaged 0.29% SnO₂ (0.23% Sn) over 80 samples, The Bounce 0.14% SnO₂ over 42 samples and Mt Alwa South 0.08% SnO₂ with 110 ppm Ta₂O₅ over 45 samples. QGM noted that tantalum and niobium are zoned outward from the tin-rich centre at the pit to the Mt Alwa South and Bounce prospects. Individual sample results are held in GSV digital files that the Company is obtaining. Combined, the historical data show the same pattern as Dart Mining’s new samples that tin grades are highest in the greisenised and pegmatitic phases of the dykes at the Walwa pit, whereas tantalum (and niobium) are highest in the outer parts of the system at Mt Alwa South, Redbank Creek and Snake Gully. This zonation is consistent with a single fractionating source beneath the Walwa pit area, which is the target of Dart Mining’s planned deep drilling. Table 2: Selected historical rock chip results, Walwa tin mine area, EL007426 (see Appendix 1, Table A2 for the complete listing, and JORC Table 1 for the basis of reporting). Program Sample Prospect Sample type Easting Northing Sn % Ta ppm Nb ppm Union Corp. 1981 16879 Walwa tin mine (Walwa Tin Field) Rock chip Local Grid – not located 0.23% 90 80 Union Corp. 1981 17543 Mt Alwa South Rock chip 563,570 6,020,260 0.09% 610 - Union Corp. 1981 17551 Mt Alwa South Rock chip 563,676 6,020,161 0.49% 110 - Union Corp. 1981 17554 Mt Alwa South Rock chip 563,541 6,020,103 2.91% 130 - Tantalum Australia 2001 W006 Mt Alwa North / The Bounce area Rock chip 563,626 6,021,368 0.20% 344 140 Tantalum Australia 2001 W007 Mt Alwa North / The Bounce area Rock chip 563,641 6,021,415 0.28% 246 140 Tantalum Australia 2001 W011 Walwa tin mine (Mt Alwa) pit area Rock chip 564,058 6,020,927 0.39% 98 112 Tantalum Australia 2001 W013 Walwa tin mine (Mt Alwa) pit area Rock chip 564,002 6,021,018 0.39% 188 217 Tantalum Australia 2001 W021 Mt Alwa South Rock chip 563,460 6,020,244 0.19% 3,931 322 Tantalum Australia 2001 W024 Mt Alwa South Rock chip 563,637 6,020,281 0.08% 311 84 Tantalum Australia 2001 W030 Redbank Creek Rock chip 563,969 6,022,384 0.32% 549 301 Brady 2004 W12R Amphitheatre (S of Walwa tin mine) Dump 563,954 6,020,655 0.92% 120 120 Brady 2004 W2R Mt Alwa South / Amphitheatre Local detritus 563,864 6,020,235 0.06% 250 110 Brady 2004 W5R Amphitheatre (N of Mt Alwa South) Local detritus 563,554 6,020,565 2.70% 20 20 Brady 2004 W9R Amphitheatre (S of Walwa tin mine) Dump 563,954 6,020,655 0.74% 280 110 Brady 2005 W13R The Bounce Outcrop 563,714 6,021,355 0.14% 40 50 Brady 2005 W14R The Bounce Outcrop 563,714 6,021,435 0.23% 110 120 Brady 2005 W17R Snake Gully Mullock 562,524 6,020,755 0.04% 670 70 Brady 2005 W27R Snake Gully Outcrop 562,524 6,020,755 0.44% 60 60 Brady 2005 W28R Snake Gully Outcrop 562,524 6,020,755 0.26% 70 60 Brady 2005 W29R Snake Gully Mullock 562,524 6,020,755 0.01% 490 50 8 | P a g e Program Sample Prospect Sample type Easting Northing Sn % Ta ppm Nb ppm Brady 2006 W35R (36276) Willsburn (500 m SSW of Mt Alwa South) Pit debris 563,634 6,020,035 0.83% 30 59 Coordinates GDA94 / MGA Zone 55. 2001 sample locations digitised from the report plan (±25 m). Tantalum Australia results were reported as oxides and converted (Sn = SnO₂ × 0.7877; Ta = Ta₂O₅ × 0.8190; Nb = Nb₂O₅ × 0.6990). Dump, mullock, detritus and float samples are not in-situ and may be biased by hand sorting. Union Corporation 1981 sample locations were digitised from Plan 5 of the 1981 report and converted from the R.B. Mining local mine grid to GDA94/MGA Zone 55 (±25 m). Sample 16879 is located in the source report only as “Walwa Tin Field” and has no grid position Table 3: Queensland Gold & Minerals 2008 rock chip program – average grades by prospect (167 samples, ALS Chemex. Source G35201 Table 111 ). Prospect No. samples SnO₂ av. ppm Sn av. % Ta₂O₅ av. ppm Ta av. ppm Nb₂O₅ av. ppm Mt Alwa South 45 802 0.06% 110 90 115 Mt Alwa (Walwa tin mine) 80 2,940 0.23% 61 50 92 The Bounce 42 1,361 0.11% 98 80 100 All prospects 167 1,967 0.15% 84 69 100 GEOLOGY OF THE WALWA TIN ZONE A number of shallow dipping tin-bearing greisenous aplite-pegmatite dykes occur in the Walwa-Mt Alwa historic mine area and have been worked intermittently since 18823,4 , with large open pit workings developed in the late 1960s when approximately 97,000 t of ore was excavated and processed. The sub-horizontal dykes cut across steeply dipping metasedimentary country rocks (knotted schists, phyllites and quartzites). At the Walwa mine four major dykes are recognised at surface and two further dykes were intersected in drilling. The dykes are 1 to 8 m thick and dip at 20–30° to the north-west, north or north-east, forming a broad dome plunging northwards. The dykes are predominantly aplite with pegmatite and greisen phases and commonly contain coarse cassiterite along their margins together with large potassium feldspar crystals. Dart Mining’s interpretation of exploration targeting for a potential deeper and higher grade greisen is shown in Figure 6. Previous explorers have documented unidirectional solidification textures in the dykes7,9 and interpreted them, together with the dome geometry and the outward zoning of tantalum and niobium, as evidence of a buried granite cupola at shallow depth beneath the Walwa (Mt Alwa) pit area. The 150 historic drill holes at Walwa were compiled by the Company and reported on 25 August 20262 , together with pre-JORC historical estimates by Union Corporation of 8.64 Mt at 0.163% Sn and 50 ppm Ta₂O₅ (March 1983) and a higher-grade selective zone of 993,000 t at 0.38% Sn and 55 ppm Ta₂O₅ (September 1983). These historical estimates are not reported in accordance with the JORC Code 2012 and are not being treated by the Company as current Mineral Resources. Refer to the 25 August 2026 announcement2 for the information required under ASX Listing Rule 5.12. 9 | P a g e Figure 6 – Interpreted geology and high-priority tin mineralised targets at the Walwa Tin Mine 10 | P a g e NEXT STEPS • Complete drill access approvals and commence the planned diamond drilling program at Walwa, targeting repeated tin-mineralised dykes at depth and a possible tin-rich greisen zone at the top of the interpreted causative intrusion (see Figure 6); • Systematic rock chip and channel sampling of the dykes exposed in the tantalum-enriched albitite dykes at Snake Gully for total Sn, Ta and Nb; and • Field inspection and rock chip sampling of the McHargs tungsten and Hall's gold prospects to confirm the historical results. Approved for release by the Board of Directors. For more information contact: James Chirnside Managing Director Dart Mining NL jchirnside@dartmining.com.au +61 419 605 842 InvestorHub Link Terry Bates Director Dart Mining NL tbates@dartmining.com.au 11 | P a g e REFERENCES 1. Dart Mining NL (2026). Walwa Tin-Tungsten Project Site Visit and Observations. ASX announcement, 25 June 2026. 2. Dart Mining NL (2026). Priority Drilling Targets – Walwa Tin Mine. ASX announcement, 25 August 2026. 3. Bowen (1970). Mt Alwa and The Bounce Tin Mines. Mining and Geological Journal, Victoria. Vol 6, No 6. 4. Cochrane and Bowen (1971). Tin Deposits of Victoria. Geological Survey of Victoria, Bulletin No 60. 5. Brachmanski, E. (1979). Report EL623 Walwa, Victoria, for the six months ending June 1979. R.B. Mining Pty Ltd. GSV report G30762 (EL623_G30762_197906_Half.pdf). 6. Brachmanski, E. (1979). McHarg Scheelite Prospect, final report, December 1979. R.B. Mining Pty Ltd. GSV report G7455 (EL623_G7455_197912_Special.pdf). 7. Union Corporation (Australia) Pty Ltd (1981). Second six-monthly report, EL1248, EL623 and EL738, March to September 1981. GSV report G30764 (EL1248-EL623- EL738_G30764_198109_Half.pdf). 8. Murphy, J.A. (2001). Annual Report EL4431 and EL4508, Walwa Tantalum Project, October 2001. Tantalum Australia NL. GSV report G29427 (EL4431- EL4508_G29427_200110_Annual.pdf). 9. Rees, B.V.L. (2002). Annual Report EL4431, Walwa Tantalum Project, October 2002. Tantalum Australia Operations. GSV report G29806 (EL4431_G29806_200210_Annual.pdf). 10. Brady, J.M. (2004, 2005, 2006). Annual Reports EL4431 for the years ending 30 June 2004, 2005 and 2006. GSV reports G31601, G32435 and G33345. 11. Nethery, J. and Kennedy, J. (2008). Annual Report EL4431 for the year ending 30 June 2008. Queensland Gold & Minerals Ltd. GSV report G35201 (EL4431_G35201_200806_Annual.pdf). 12. Nethery, J. et al. (2008). Annual Report EL4927 to December 2007. Queensland Gold & Minerals Ltd. GSV report G34736 (EL4927_G34736_200712_Annual.pdf and rock geochemistry data files). 13. Hochwimmer, B., Geerdts, P. and Wanless, C. (2014). EL5462 Annual Report, 11 February 2014 to 30 June 2014. Alderan Resources Pty Ltd. GSV report G46899 (EL5462_G46899_201406_Annual.pdf and rock data file EL5462_201406_Rock.txt). All GSV reports are available at www.gsv.vic.gov.au (Earth Resources Regulation, GeoVic / Reports search). 12 | P a g e About Dart Mining The Triumph Gold Project is Dart’s first step into an advanced intrusion related gold system project in Queensland. Dart will look to develop a regional presence in Queensland through advanced stage intrusion related and epithermal gold projects. Dart is farming into the Coonambula Antimony-Gold Project in Central Queensland. Dart Mining will continue to evaluate several historic Tin, Tungsten, and Gold prospects in Central and Northeast Victoria including the Rushworth Gold, and Walwa Tin / Tungsten prospects. Competent Person’s Statement The information in this report has been prepared, compiled, and verified by Mr Andrew Dawes, who is a Member of the Australasian Institute of Mining and Metallurgy (CP, Geo) and a Member of the Australian Institute of Geoscientists (RP Geo). Mr Andrew Dawes is employed by AHD Resources and consults to Dart Mining NL. Mr Dawes has sufficient experience that is relevant to the style of mineralisation and type of deposits under consideration and to the activity being undertaken 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. Dawes takes responsibility for the exploration results, and consents to the inclusion in the report of the matters based on his information in the form and context in which it appears. The historical exploration results referred to in this release were extracted from reports prepared by previous explorers and lodged with the Geological Survey of Victoria. Mr Dawes has reviewed the source reports and the sampling and analytical methods described in them, as summarised in the JORC Table 1 in Appendix 2, but the Company has not independently verified the historical results by re-sampling or re-assaying. Mr Dawes considers the historical results to be relevant and material to the understanding of the Project and to have been reported in a manner that is consistent with the requirements of the JORC Code 2012 to the extent that the source information allows. Forward-Looking Statement Certain statements contained in this document constitute forward-looking statements. Forward-looking statements include, but are not limited to, Dart Mining’s current expectations, estimates and projections about the industry in which Dart Mining operates, and beliefs and assumptions regarding Dart Mining’s future performance. Such forward-looking statements are based on a number of estimates and assumptions made by the Company and its consultants in light of experience, current conditions and expectations of future developments which the Company believes are appropriate in the current circumstances. When used in this document, words such as; “anticipate”, “could”, “intends”, “estimate”, “potential”, “plan”, “seeks”, “may”, “should”, and similar expressions are forward-looking statements. Although Dart Mining believes that its expectations presented in these forward-looking statements are reasonable, such statements are subject to known and unknown risks, uncertainties and other factors, which may cause the actual results, achievements and performance of the Company to be materially different from the future results and achievements expressed or implied by such forward-looking statements. Investors are cautioned that forward-looking information is no guarantee of future performance and accordingly, investors are cautioned not to place undue reliance on these forward-looking statements. The exploration results for samples WAS001, WWP001, WWP002 and WWP003 are reported for the first time in this release. The historical exploration results referred to in this release were reported by previous explorers in reports lodged with the Geological Survey of Victoria, as referenced above, and are publicly available. Dart Mining is not aware of any new information or data that materially affects the information included in the original reports. 13 | P a g e APPENDIX 1: ROCK CHIP SAMPLE DATA Table A1: Full analytical results, Dart Mining rock chip samples, Intertek Genalysis Townsville job 2451.0/2614811 (received 30 June 2026, reported 15 August 2026). Coordinates GDA94 / MGA Zone 55 (handheld GPS). Sample Easting Northing Type Sn ppm (fusion) W ppm (fusion) Ta ppm Nb ppm Li ppm Rb ppm Cs ppm Be ppm Cu ppm Zn ppm Pb ppm As ppm Bi ppm Au ppm Ag ppm WAS001 563551 6020217 Outcrop 3,965 <1 24.3 35.3 38.7 909 49.8 2.88 3.7 18 7.4 5.7 0.20 <0.005 <0.05 WWP001 564026 6020942 Float 10,900 3 70.0 80.7 31.3 871 49.8 3.87 3.2 34 12.0 4.9 0.46 <0.005 <0.05 WWP002 564016 6020944 Outcrop 39,600 9 165.1 196.7 89.3 1,801 104.6 5.19 10.2 57 5.8 12.5 0.21 <0.005 <0.05 WWP003 563987 6021105 Float 6,127 <1 28.9 45.5 169.5 2,611 155.7 4.43 1.7 51 8.3 0.8 0.29 <0.005 <0.05 Methods: Sn, W - FP6/MS (sodium peroxide fusion, ICP-MS, detection Sn 2 ppm, W 1 ppm), all other elements - 4A/MS (four-acid digest, ICP-MS). Au – FA25/OE (25 g fire assay, ICP-OES, detection 0.005 ppm). Four-acid Sn is a partial digest for cassiterite and is shown for reference only. Rb for WWP003 by over-range method (2,611 ppm). Table A2: Compilation of historical rock chip samples, Walwa tin mine area, EL007426. Coordinates GDA94 / MGA Zone 55, converted from AMG66 (+114 m E, +185 m N) digitised from report plans (2001, ±25 m), or converted from the 1981 R.B. Mining local mine grid (Union Corporation 1981, ±25 m, samples 17541 and 16879 could not be located). Element values converted from oxides where reported as oxides. Program Sample Prospect Sample type Easting Northing Lithology / description Sn ppm Ta ppm Nb ppm Cs ppm Li ppm Tantalum Australia 2001 W001 Mt Alwa North / The Bounce area Rock chip (pegmatite outcrop) 563,955 6,021,657 Aplite-pegmatite 1,418 205 154 – – Tantalum Australia 2001 W002 Mt Alwa North / The Bounce area Rock chip (pegmatite outcrop) 563,986 6,021,497 Aplite-pegmatite 520 131 147 – – Tantalum Australia 2001 W003 Mt Alwa North / The Bounce area Rock chip (pegmatite outcrop) 563,991 6,021,525 Aplite-pegmatite 1,812 156 126 – – Tantalum Australia 2001 W004 Mt Alwa North / The Bounce area Rock chip (pegmatite outcrop) 563,991 6,021,556 Aplite-pegmatite 654 106 98 – – Tantalum Australia 2001 W005 Mt Alwa North / The Bounce area Rock chip (pegmatite outcrop) 563,634 6,021,356 Aplite-pegmatite 2,048 188 161 – – Tantalum Australia 2001 W006 Mt Alwa North / The Bounce area Rock chip (pegmatite outcrop) 563,626 6,021,368 Aplite-pegmatite 2,048 344 140 – – Tantalum Australia 2001 W007 Mt Alwa North / The Bounce area Rock chip (pegmatite outcrop) 563,641 6,021,415 Aplite-pegmatite 2,757 246 140 – – Tantalum Australia 2001 W008 Mt Alwa North / The Bounce area Rock chip (pegmatite outcrop) 563,592 6,021,312 Aplite-pegmatite 181 147 147 – – Tantalum Australia 2001 W009 Mt Alwa North / The Bounce area Rock chip (pegmatite outcrop) 563,631 6,021,160 Aplite-pegmatite 1,024 221 161 – – Tantalum Australia 2001 W010 Mt Alwa North / The Bounce area Rock chip (pegmatite outcrop) 563,634 6,020,990 Aplite-pegmatite 945 238 98 – – Tantalum Australia 2001 W011 Walwa tin mine (Mt Alwa) pit area Rock chip (pegmatite outcrop) 564,058 6,020,927 Aplite-pegmatite 3,938 98 112 – – Tantalum Australia 2001 W012 Walwa tin mine (Mt Alwa) pit area Rock chip (pegmatite outcrop) 564,002 6,021,079 Aplite-pegmatite 1,260 90 91 – – Tantalum Australia 2001 W013 Walwa tin mine (Mt Alwa) pit area Rock chip (pegmatite outcrop) 564,002 6,021,018 Aplite-pegmatite 3,860 188 217 – – Tantalum Australia 2001 W014 Walwa tin mine (Mt Alwa) pit area Rock chip (pegmatite outcrop) 563,904 6,020,815 Aplite-pegmatite 1,575 78 112 – – 14 | P a g e Program Sample Prospect Sample type Easting Northing Lithology / description Sn ppm Ta ppm Nb ppm Cs ppm Li ppm Tantalum Australia 2001 W015 Walwa tin mine (Mt Alwa) pit area Rock chip (pegmatite outcrop) 563,896 6,020,768 Aplite-pegmatite 1,575 106 84 – – Tantalum Australia 2001 W016 Mt Alwa South Rock chip (pegmatite outcrop) 563,467 6,020,214 Aplite-pegmatite 87 37 45 – – Tantalum Australia 2001 W017 Mt Alwa South Rock chip (pegmatite outcrop) 563,495 6,020,204 Aplite-pegmatite 95 57 77 – – Tantalum Australia 2001 W018 Mt Alwa South Rock chip (pegmatite outcrop) 563,637 6,020,129 Aplite-pegmatite 291 131 126 – – Tantalum Australia 2001 W019 Mt Alwa South Rock chip (pegmatite outcrop) 563,622 6,020,155 Aplite-pegmatite 425 61 84 – – Tantalum Australia 2001 W020 Mt Alwa South Rock chip (pegmatite outcrop) 563,571 6,020,207 Aplite-pegmatite 102 53 66 – – Tantalum Australia 2001 W021 Mt Alwa South Rock chip (pegmatite outcrop) 563,460 6,020,244 Aplite-pegmatite 1,890 3,931 322 – – Tantalum Australia 2001 W022 Mt Alwa South Rock chip (pegmatite outcrop) 563,666 6,020,258 Aplite-pegmatite 1,497 156 126 – – Tantalum Australia 2001 W023 Mt Alwa South Rock chip (pegmatite outcrop) 563,683 6,020,298 Aplite-pegmatite 236 188 91 – – Tantalum Australia 2001 W024 Mt Alwa South Rock chip (pegmatite outcrop) 563,637 6,020,281 Aplite-pegmatite 788 311 84 – – Tantalum Australia 2001 W025 Mt Alwa South Rock chip (pegmatite outcrop) 563,647 6,020,329 Aplite-pegmatite 1,103 131 133 – – Tantalum Australia 2001 W028 Redbank Creek Rock chip (pegmatite outcrop) 564,004 6,022,364 Aplite-pegmatite 465 115 66 – – Tantalum Australia 2001 W029 Redbank Creek Rock chip (pegmatite outcrop) 563,992 6,022,397 Aplite-pegmatite 685 57 49 – – Tantalum Australia 2001 W030 Redbank Creek Rock chip (pegmatite outcrop) 563,969 6,022,384 Aplite-pegmatite 3,229 549 301 – – Tantalum Australia 2001 W031 Walwa tin mine (Mt Alwa) pit area Rock chip (pegmatite outcrop) 564,060 6,021,055 Aplite-pegmatite 2,284 61 98 – – Tantalum Australia 2001 W032 Walwa tin mine (Mt Alwa) pit area Rock chip (pegmatite outcrop) 563,928 6,021,015 Aplite-pegmatite 1,812 139 119 – – Tantalum Australia 2001 W033 Walwa tin mine (Mt Alwa) pit area Rock chip (pegmatite outcrop) 563,930 6,021,093 Aplite-pegmatite 1,575 66 70 – – Brady 2004 W2R Mt Alwa South / Amphitheatre Local detritus 563,864 6,020,235 Weathered coarse-grained quartz-muscovite-feldspar pegmatite with common brown-black cassiterite in muscovite books 620 250 110 – – Brady 2004 W4R Mt Alwa South / Amphitheatre Local detritus 563,944 6,020