# DLI: Yinnetharra and Mt Ida Exploration Update Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e Original source: https://www.asx.com.au/asx/v2/statistics/displayAnnouncement.do?display=pdf&idsId=03145835 Publisher: asx Original announcement: 2026-09-29T22:49:00.000Z Analysis by Minestarters Atlas Atlas analysis published: 2026-09-29T23:07:26.738Z Atlas analysis updated: 2026-09-29T23:07:26.738Z - Company: Delta Lithium Limited - Ticker: DLI - Exchange: ASX - Region: Western Australia - Primary commodity: Lithium - Secondary commodities: Tantalum, Rubidium, Gold, Silver, Copper, Tungsten - Document categories: Resource update, Drill results, Metallurgy, Other - Extracted: 2026-09-29 23:07:27 UTC Narrative sentiment: 0.60 · Bullish ## Minestarters Atlas summary Delta Lithium Limited provides an exploration update for its Yinnetharra and Mt Ida Lithium Projects in Western Australia. New drill intercepts at Mt Ida show high-grade lithium, tantalum, and rubidium, contributing to increased resource confidence and potential category upgrades. Metallurgical testwork is underway for Mt Ida to confirm the tantalum flowsheet and produce concentrates, while new reconnaissance drill targets for both lithium and gold have been generated at Yinnetharra, with drilling planned for Q4 2026. Reasoning: The announcement provides positive updates on exploration and development activities across both projects, including new drill intercepts and metallurgical progress, alongside a strong financial position. However, the lack of true width for new intercepts and the re-release of some historical data temper the overall novelty. - Positive factor: New high-grade lithium, tantalum, and rubidium drill intercepts at Mt Ida contribute to resource confidence and potential category upgrade. - Positive factor: Ongoing metallurgical testwork at Mt Ida is progressing to confirm the tantalum flowsheet and produce concentrates, de-risking future development. - Positive factor: New reconnaissance drill targets for both lithium and gold have been generated at Yinnetharra, indicating active exploration. - Positive factor: The company maintains a strong cash balance and strategic investments. - Negative factor: The Mt Ida drill intercepts are reported as downhole lengths and do not represent true widths, which may overstate actual thickness. - Negative factor: The Yinnetharra gold drill result is a re-release of previously announced data, reducing its novelty. Facts used in scoring: 60 ## Classification and evidence **Apparent Width Only** Polarity: negative Definition: Interval given as downhole width with no true width or drill orientation — apparent width may overstate true thickness. Why it applies: The document explicitly states that the drill intercepts 'do not represent true widths' and that 'the geometry of the mineralisation is oblique'. Evidence · text > Intercepts are from Mt Ida gold drilling by Ballard Mining \(BM1\) and do not represent true widths **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: The JORC Table 1 for Mt Ida states that 'Standards and blanks are inserted at a rate of 1 in 20 in RC and DD sampling, All QAQC analyses were within tolerance' and 'Samples have been analysed by external laboratories utilising industry standard methods'. Evidence · text > Standards and blanks are inserted at a rate of 1 in 20 in RC and DD sampling, All QAQC analyses were within tolerance **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: The Competent Person's Statement names Mr. Olaf Frederickson as a Competent Person who is a Member of the Australasian Institute of Geoscientists \(AIG\) and consents to the inclusion of information. Evidence · text > Information in this Announcement that relates to exploration results is based upon work undertaken by Mr. Olaf Frederickson, a Competent Person who is a Member of the Australasian Institute of Geoscientists \(AIG\). **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: The drill intercept for MSRC004 is explicitly stated as 'previously announced' on 16/06/2026. Evidence · text > 2m @ 5.69 g/t Au in drillhole MSRC004, \(announced 16/06/2026\) **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: The document states that 'Ballard Mining’s gold infill drill program has continued to return high-grade mineralised lithium intervals' and 'These additional infill holes have been used to refine the existing MRE model interpretation'. Evidence · text > Ballard Mining’s gold infill drill program has continued to return high-grade mineralised lithium intervals. **Category Upgrade** Polarity: positive Definition: Resource confidence improved — Inferred upgraded to Indicated, or Indicated to Measured. De-risking signal. Why it applies: The document states that the new drilling 'will contribute to converting the inferred category to indicated providing increased confidence in the resource model'. Evidence · text > will contribute to converting the inferred category to indicated providing increased confidence in the resource model **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: The Competent Person's Statement explicitly mentions compliance with the '2012 Edition of the ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’ \(JORC Code\)'. Evidence · text > as defined in the 2012 Edition of the ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’ \(JORC Code\) **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: The Yinnetharra MRE was 'released in March 2025', making it over a year old at the time of this September 2026 announcement. Evidence · text > A mineral resource estimate \(MRE\) update for Yinnetharra was released in March 2025 **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: The Mt Ida MRE includes a 'Measured' category with 0.5 Mt at 1.1% Li2O. Evidence · table > Measured Context: 0.5 **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: The Mt Ida MRE includes an 'Indicated' category with 7.2 Mt at 1.3% Li2O. Evidence · table > Indicated Context: 7.2 **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: The Mt Ida MRE includes an 'Inferred' category with 7.1 Mt at 1.1% Li2O. Evidence · table > Inferred Context: 7.1 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: The document refers to the 'Mt Ida Lithium updated Mineral Resource Estimate \(MRE\)' and states that new drill results 'will be incorporated into the next resource update'. Evidence · text > Mt Ida Lithium updated Mineral Resource Estimate \(MRE\) currently: **Pilot Scale Complete** Polarity: positive Definition: Pilot or demonstration plant testing completed under continuous operation. Why it applies: The metallurgical testwork is being conducted on a '1 tonne composite', which indicates a significant scale of testing beyond bench-scale. Evidence · text > Metallurgical testwork on a 1 tonne composite of Mt Ida core is underway **Mill Route** Polarity: neutral Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\). Why it applies: the document describes a flotation route \("concentrate"\) ## Extracted facts Stored fact records: 59. Some facts used in scoring do not have a stored record. ## Drill Results (11) ### TNEX011 [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-drill-facts-0) Mt Ida · lithium #### Identity - Hole ID: TNEX011 - Project: Mt Ida - Commodity: lithium - Region: australia\_wa - Reported Region: australia\_wa - Ticker: DLI #### Geometry - Grade: 1.2 - Grade Unit: % - Intercept: 8 m - From: 615 m - To: 623 m - Intercept Depth: 615 m #### Classification - Deposit Type: other - Program: resource - Sample Type: drill - Group ID: TNEX011:615-623 - Mining Method: underground #### Location - CRS: GDA94 MGA zone 50 #### QA/QC - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Compositing - Cutoff Grade: 0.3 - Cutoff Unit: % Li2O #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: This high-grade lithium intercept from a resource conversion drilling program is positive for increasing confidence in the Mt Ida resource, despite the lack of true width disclosure. - Positive factor: High-grade lithium intercept \(1.2% Li2O\) contributes to resource confidence and potential category upgrade. - Positive factor: Intercept is part of a program aimed at converting inferred resources to indicated, de-risking the project. - Negative factor: Intercept is reported as downhole length, and true width is not known, which may overstate actual thickness. Evidence · text > 8.0m @ 1.2% Li2O, 58ppm Ta2O5 and 0.31% Rb2O from 615m #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### TNEX011 [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-drill-facts-1) Mt Ida · tantalum #### Identity - Hole ID: TNEX011 - Project: Mt Ida - Commodity: tantalum - Region: australia\_wa - Reported Region: australia\_wa - Ticker: DLI #### Geometry - Grade: 58 - Grade Unit: ppm Ta2O5 - Intercept: 8 m - From: 615 m - To: 623 m - Intercept Depth: 615 m #### Classification - Deposit Type: other - Program: resource - Sample Type: drill - Group ID: TNEX011:615-623 - Mining Method: underground #### Location - CRS: GDA94 MGA zone 50 #### QA/QC - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Compositing - Cutoff Grade: 0.3 - Cutoff Unit: % Li2O #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The tantalum grade reported within this intercept adds to the polymetallic value of the Mt Ida project, supporting resource confidence. - Positive factor: Tantalum grade is reported alongside lithium, indicating polymetallic potential and additional value. - Positive factor: Intercept contributes to resource confidence and potential category upgrade. - Negative factor: Intercept is reported as downhole length, and true width is not known, which may overstate actual thickness. Evidence · text > 8.0m @ 1.2% Li2O, 58ppm Ta2O5 and 0.31% Rb2O from 615m #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### TNEX011 [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-drill-facts-2) Mt Ida · rubidium #### Identity - Hole ID: TNEX011 - Project: Mt Ida - Commodity: rubidium - Region: australia\_wa - Reported Region: australia\_wa - Ticker: DLI #### Geometry - Grade: 0.31 - Grade Unit: % - Intercept: 8 m - From: 615 m - To: 623 m - Intercept Depth: 615 m #### Classification - Deposit Type: other - Program: resource - Sample Type: drill - Group ID: TNEX011:615-623 - Mining Method: underground #### Location - CRS: GDA94 MGA zone 50 #### QA/QC - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Compositing - Cutoff Grade: 0.3 - Cutoff Unit: % Li2O #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The rubidium grade reported within this intercept adds to the polymetallic value of the Mt Ida project, supporting resource confidence. - Positive factor: Rubidium grade is reported alongside lithium and tantalum, indicating polymetallic potential and additional value. - Positive factor: Intercept contributes to resource confidence and potential category upgrade. - Negative factor: Intercept is reported as downhole length, and true width is not known, which may overstate actual thickness. Evidence · text > 8.0m @ 1.2% Li2O, 58ppm Ta2O5 and 0.31% Rb2O from 615m #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### TNEX011 [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-drill-facts-3) Mt Ida · lithium #### Identity - Hole ID: TNEX011 - Project: Mt Ida - Commodity: lithium - Region: australia\_wa - Reported Region: australia\_wa - Ticker: DLI #### Geometry - Grade: 1.4 - Grade Unit: % - Intercept: 9.95 m - From: 648.05 m - To: 658 m - Intercept Depth: 615 m #### Classification - Deposit Type: other - Program: resource - Sample Type: drill - Group ID: TNEX011:648.05-658 - Mining Method: underground #### Location - CRS: GDA94 MGA zone 50 #### QA/QC - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Compositing - Cutoff Grade: 0.3 - Cutoff Unit: % Li2O #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: This high-grade and wide lithium intercept from a resource conversion drilling program is very positive for increasing confidence in the Mt Ida resource, despite the lack of true width disclosure. - Positive factor: High-grade lithium intercept \(1.4% Li2O\) over a significant width \(9.95m\) contributes strongly to resource confidence and potential category upgrade. - Positive factor: Intercept is part of a program aimed at converting inferred resources to indicated, de-risking the project. - Negative factor: Intercept is reported as downhole length, and true width is not known, which may overstate actual thickness. Evidence · text > 9.95m @ 1.4 Li2O, 117ppm Ta2O5 and 0.45% Rb2O from 648.05m #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### TNEX011 [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-drill-facts-4) Mt Ida · tantalum #### Identity - Hole ID: TNEX011 - Project: Mt Ida - Commodity: tantalum - Region: australia\_wa - Reported Region: australia\_wa - Ticker: DLI #### Geometry - Grade: 117 - Grade Unit: ppm Ta2O5 - Intercept: 9.95 m - From: 648.05 m - To: 658 m - Intercept Depth: 615 m #### Classification - Deposit Type: other - Program: resource - Sample Type: drill - Group ID: TNEX011:648.05-658 - Mining Method: underground #### Location - CRS: GDA94 MGA zone 50 #### QA/QC - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Compositing - Cutoff Grade: 0.3 - Cutoff Unit: % Li2O #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The tantalum grade reported within this intercept adds to the polymetallic value of the Mt Ida project, supporting resource confidence. - Positive factor: Tantalum grade is reported alongside lithium, indicating polymetallic potential and additional value. - Positive factor: Intercept contributes to resource confidence and potential category upgrade. - Negative factor: Intercept is reported as downhole length, and true width is not known, which may overstate actual thickness. Evidence · text > 9.95m @ 1.4 Li2O, 117ppm Ta2O5 and 0.45% Rb2O from 648.05m #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### TNEX011 [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-drill-facts-5) Mt Ida · rubidium #### Identity - Hole ID: TNEX011 - Project: Mt Ida - Commodity: rubidium - Region: australia\_wa - Reported Region: australia\_wa - Ticker: DLI #### Geometry - Grade: 0.45 - Grade Unit: % - Intercept: 9.95 m - From: 648.05 m - To: 658 m - Intercept Depth: 615 m #### Classification - Deposit Type: other - Program: resource - Sample Type: drill - Group ID: TNEX011:648.05-658 - Mining Method: underground #### Location - CRS: GDA94 MGA zone 50 #### QA/QC - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Compositing - Cutoff Grade: 0.3 - Cutoff Unit: % Li2O #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The rubidium grade reported within this intercept adds to the polymetallic value of the Mt Ida project, supporting resource confidence. - Positive factor: Rubidium grade is reported alongside lithium and tantalum, indicating polymetallic potential and additional value. - Positive factor: Intercept contributes to resource confidence and potential category upgrade. - Negative factor: Intercept is reported as downhole length, and true width is not known, which may overstate actual thickness. Evidence · text > 9.95m @ 1.4 Li2O, 117ppm Ta2O5 and 0.45% Rb2O from 648.05m #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### MSRC004 [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-drill-facts-6) Yinnetharra · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: MSRC004 - Project: Yinnetharra - Commodity: gold - Region: australia\_wa - Reported Region: australia\_wa - Ticker: DLI #### Geometry - Grade: 5.69 - Grade Unit: g/t - Intercept: 2 m - From: 96 m - To: 98 m - Intercept Depth: 96 m #### Classification - Program: exploration - Sample Type: drill - Group ID: MSRC004:96-98 - Mining Method: open\_pit #### Location - CRS: GDA94 MGA zone 50 #### QA/QC - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes - Historical Source Date: 2026-06-16T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: While the gold grade is high, this is a re-released historical result, limiting its novelty. It does, however, provide context for ongoing gold exploration at Yinnetharra. - Positive factor: High-grade gold intercept \(5.69 g/t\) indicates potential for gold mineralization at Yinnetharra. - Negative factor: This is a previously announced result, reducing its novelty in this release. - Negative factor: Intercept is reported as downhole length, and true width is not known. Evidence · text > 2m @ 5.69 g/t gold from 96m in MSRC004 \(previously announced\) #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### Fact 8 [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-drill-facts-7) Yinnetharra · gold #### Identity - Project: Yinnetharra - Commodity: gold - Region: australia\_wa - Reported Region: australia\_wa - Ticker: DLI #### Geometry - Grade: 6.83 - Grade Unit: g/t #### Classification - Sample Type: surface #### QA/QC - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: This high-grade rock chip sample is a strong positive indicator for gold exploration at Yinnetharra, providing new and compelling evidence for future drilling. - Positive factor: High-grade gold rock chip \(6.83 g/t\) indicates strong gold mineralization potential at the Cathedral prospect. - Positive factor: The sample is coincident with a broad gold in soil anomaly, supporting the target. Evidence · text > High-grade gold rockchip 6.83 g/t in sample M444 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### Fact 9 [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-drill-facts-8) Yinnetharra · silver #### Identity - Project: Yinnetharra - Commodity: silver - Region: australia\_wa - Reported Region: australia\_wa - Ticker: DLI #### Geometry - Grade: 0.6 - Grade Unit: ppm #### Classification - Sample Type: surface #### QA/QC - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The presence of silver, even at a low grade, alongside high-grade gold in the rock chip sample adds to the polymetallic potential of the target. - Positive factor: Silver is present alongside high-grade gold, indicating polymetallic potential. Evidence · table > 0.6 Context: M444 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### Fact 10 [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-drill-facts-9) Yinnetharra · copper #### Identity - Project: Yinnetharra - Commodity: copper - Region: australia\_wa - Reported Region: australia\_wa - Ticker: DLI #### Geometry - Grade: 413 - Grade Unit: ppm #### Classification - Sample Type: surface #### QA/QC - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The presence of copper alongside high-grade gold in the rock chip sample adds to the polymetallic potential of the target. - Positive factor: Copper is present alongside high-grade gold, indicating polymetallic potential. Evidence · table > 413 Context: M444 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### Fact 11 [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-drill-facts-10) Yinnetharra · tungsten #### Identity - Project: Yinnetharra - Commodity: tungsten - Region: australia\_wa - Reported Region: australia\_wa - Ticker: DLI #### Geometry - Grade: 3.23 - Grade Unit: ppm #### Classification - Sample Type: surface #### QA/QC - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The presence of tungsten alongside high-grade gold in the rock chip sample adds to the polymetallic potential of the target. - Positive factor: Tungsten is present alongside high-grade gold, indicating polymetallic potential. Evidence · table > 3.23 Context: M444 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ## Resource Estimates (48) ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-12) Yinnetharra · lithium Historical result Needs review: historical\_restatement #### Identity - Project: Yinnetharra - Commodity: lithium - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:e0ab1f37bf9abaeafce4 #### Resource Data - Category: indicated - Tonnes: 16100000 - Grade: 1 - Grade Unit: % Li2O - Contained Metal: 158 - Contained Unit: kt - Cutoff Grade: 0.5 - Cutoff Unit: % Li2O #### Prior Estimate - Resource Date: 2025-03-01 #### Lab - Laboratory: ALS Laboratories #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-03-01T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: This historical indicated resource provides a baseline for the Yinnetharra project, showing a substantial lithium endowment, though it is not new information. - Positive factor: Significant indicated resource tonnage \(16.1 Mt\) at a good grade \(1.0% Li2O\) for lithium. - Negative factor: This is a historical estimate from March 2025, reducing its novelty in this announcement. Evidence · table > 1.0 Context: 16.1 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-13) Yinnetharra · tantalum Historical result Needs review: historical\_restatement #### Identity - Project: Yinnetharra - Commodity: tantalum - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:e0ab1f37bf9abaeafce4 #### Resource Data - Category: indicated - Tonnes: 16100000 - Grade: 77 - Grade Unit: ppm Ta2O5 - Cutoff Grade: 0.5 - Cutoff Unit: % Li2O #### Prior Estimate - Resource Date: 2025-03-01 #### Lab - Laboratory: ALS Laboratories #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-03-01T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The historical indicated tantalum resource provides additional context for the polymetallic nature of the Yinnetharra project. - Positive factor: Tantalum is present as a byproduct in the indicated resource, adding potential value. - Negative factor: This is a historical estimate from March 2025, reducing its novelty in this announcement. Evidence · table > 77 Context: 16.1 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-14) Yinnetharra · lithium Historical result Needs review: historical\_restatement #### Identity - Project: Yinnetharra - Commodity: lithium - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:94841cfb9be1c6fa93f8 #### Resource Data - Category: inferred - Tonnes: 5800000 - Grade: 0.9 - Grade Unit: % Li2O - Contained Metal: 54 - Contained Unit: kt - Cutoff Grade: 0.5 - Cutoff Unit: % Li2O #### Prior Estimate - Resource Date: 2025-03-01 #### Lab - Laboratory: ALS Laboratories #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-03-01T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: This historical inferred resource contributes to the overall scale of the Yinnetharra project, but its lower confidence category and historical nature limit its impact. - Positive factor: Inferred resource adds to the overall lithium endowment of the Yinnetharra project. - Negative factor: This is a historical estimate from March 2025, reducing its novelty in this announcement. - Negative factor: Inferred category has lower geological confidence. Evidence · table > 0.9 Context: 5.8 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-15) Yinnetharra · tantalum Historical result Needs review: historical\_restatement #### Identity - Project: Yinnetharra - Commodity: tantalum - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:94841cfb9be1c6fa93f8 #### Resource Data - Category: inferred - Tonnes: 5800000 - Grade: 69 - Grade Unit: ppm Ta2O5 - Cutoff Grade: 0.5 - Cutoff Unit: % Li2O #### Prior Estimate - Resource Date: 2025-03-01 #### Lab - Laboratory: ALS Laboratories #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-03-01T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The historical inferred tantalum resource provides additional context for the polymetallic nature of the Yinnetharra project, but its lower confidence category and historical nature limit its impact. - Positive factor: Tantalum is present as a byproduct in the inferred resource, adding potential value. - Negative factor: This is a historical estimate from March 2025, reducing its novelty in this announcement. - Negative factor: Inferred category has lower geological confidence. Evidence · table > 69 Context: 5.8 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### Fact 5 [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-16) Yinnetharra · lithium Historical result Needs review: historical\_restatement #### Identity - Project: Yinnetharra - Commodity: lithium - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:9f7225e0fc9fb7e61176 #### Resource Data - Tonnes: 21900000 - Grade: 1 - Grade Unit: % Li2O - Contained Metal: 212 - Contained Unit: kt - Cutoff Grade: 0.5 - Cutoff Unit: % Li2O #### Prior Estimate - Resource Date: 2025-03-01 #### Lab - Laboratory: ALS Laboratories #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-03-01T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: This historical total resource provides a significant baseline for the Yinnetharra project, though it is not new information. - Positive factor: Total resource of 21.9 Mt at 1.0% Li2O indicates a significant lithium endowment for the Yinnetharra project. - Negative factor: This is a historical estimate from March 2025, reducing its novelty in this announcement. Evidence · table > 1.0 Context: 21.9 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### Fact 6 [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-17) Yinnetharra · tantalum Historical result Needs review: historical\_restatement #### Identity - Project: Yinnetharra - Commodity: tantalum - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:9f7225e0fc9fb7e61176 #### Resource Data - Tonnes: 21900000 - Grade: 75 - Grade Unit: ppm Ta2O5 - Cutoff Grade: 0.5 - Cutoff Unit: % Li2O #### Prior Estimate - Resource Date: 2025-03-01 #### Lab - Laboratory: ALS Laboratories #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-03-01T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The historical total tantalum resource provides additional context for the polymetallic nature of the Yinnetharra project. - Positive factor: Tantalum is present as a byproduct in the total resource, adding potential value. - Negative factor: This is a historical estimate from March 2025, reducing its novelty in this announcement. Evidence · table > 75 Context: 21.9 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-18) Mt Ida · lithium #### Identity - Project: Mt Ida - Commodity: lithium - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:81118780d75007d34ed1 #### Resource Data - Category: measured - Tonnes: 500000 - Grade: 1.1 - Grade Unit: % Li2O - Contained Metal: 5.9 - Contained Unit: kt - Cutoff Grade: 0.5 - Cutoff Unit: % Li2O #### Prior Estimate - Resource Date: 2026-09-29 #### Lab - Laboratory: ALS, Nagrom, NAL, SGS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The measured resource at Mt Ida provides a high-confidence base for project development, reflecting a well-understood portion of the deposit. - Positive factor: Measured resource category indicates high geological confidence for this portion of the Mt Ida project. - Positive factor: Good grade \(1.1% Li2O\) for a measured resource. Evidence · table > 1.1 Context: 0.5 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-19) Mt Ida · tantalum #### Identity - Project: Mt Ida - Commodity: tantalum - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:81118780d75007d34ed1 #### Resource Data - Category: measured - Tonnes: 500000 - Grade: 256 - Grade Unit: ppm Ta2O5 - Cutoff Grade: 0.5 - Cutoff Unit: % Li2O #### Prior Estimate - Resource Date: 2026-09-29 #### Lab - Laboratory: ALS, Nagrom, NAL, SGS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The measured tantalum resource at Mt Ida provides additional high-confidence context for the polymetallic nature of the project. - Positive factor: Tantalum is present as a byproduct in the measured resource, adding potential value. Evidence · table > 256 Context: 0.5 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-20) Mt Ida · rubidium #### Identity - Project: Mt Ida - Commodity: rubidium - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:81118780d75007d34ed1 #### Resource Data - Category: measured - Tonnes: 500000 - Grade: 0.39 - Grade Unit: % Rb2O - Cutoff Grade: 0.5 - Cutoff Unit: % Li2O #### Prior Estimate - Resource Date: 2026-09-29 #### Lab - Laboratory: ALS, Nagrom, NAL, SGS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The measured rubidium resource at Mt Ida provides additional high-confidence context for the polymetallic nature of the project. - Positive factor: Rubidium is present as a byproduct in the measured resource, adding potential value. Evidence · table > 0.39 Context: 0.5 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-21) Mt Ida · lithium #### Identity - Project: Mt Ida - Commodity: lithium - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:5f18db69be5d1a238b00 #### Resource Data - Category: indicated - Tonnes: 7200000 - Grade: 1.3 - Grade Unit: % Li2O - Contained Metal: 96 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: % Li2O #### Prior Estimate - Resource Date: 2026-09-29 #### Lab - Laboratory: ALS, Nagrom, NAL, SGS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The indicated resource at Mt Ida provides a solid base for project development, reflecting good geological confidence. - Positive factor: Significant indicated resource tonnage \(7.2 Mt\) at a good grade \(1.3% Li2O\) for lithium. Evidence · table > 1.3 Context: 7.2 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-22) Mt Ida · tantalum #### Identity - Project: Mt Ida - Commodity: tantalum - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:5f18db69be5d1a238b00 #### Resource Data - Category: indicated - Tonnes: 7200000 - Grade: 215 - Grade Unit: ppm Ta2O5 - Cutoff Grade: 0.3 - Cutoff Unit: % Li2O #### Prior Estimate - Resource Date: 2026-09-29 #### Lab - Laboratory: ALS, Nagrom, NAL, SGS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The indicated tantalum resource at Mt Ida provides additional context for the polymetallic nature of the project. - Positive factor: Tantalum is present as a byproduct in the indicated resource, adding potential value. Evidence · table > 215 Context: 7.2 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-23) Mt Ida · rubidium #### Identity - Project: Mt Ida - Commodity: rubidium - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:5f18db69be5d1a238b00 #### Resource Data - Category: indicated - Tonnes: 7200000 - Grade: 0.45 - Grade Unit: % Rb2O - Cutoff Grade: 0.3 - Cutoff Unit: % Li2O #### Prior Estimate - Resource Date: 2026-09-29 #### Lab - Laboratory: ALS, Nagrom, NAL, SGS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The indicated rubidium resource at Mt Ida provides additional context for the polymetallic nature of the project. - Positive factor: Rubidium is present as a byproduct in the indicated resource, adding potential value. Evidence · table > 0.45 Context: 7.2 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-24) Mt Ida · lithium #### Identity - Project: Mt Ida - Commodity: lithium - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:d502b9b815690a40596e #### Resource Data - Category: inferred - Tonnes: 7100000 - Grade: 1.1 - Grade Unit: % Li2O - Contained Metal: 83 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: % Li2O #### Prior Estimate - Resource Date: 2026-09-29 #### Lab - Laboratory: ALS, Nagrom, NAL, SGS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The inferred resource at Mt Ida contributes to the overall scale of the project, but its lower confidence category limits its immediate impact. - Positive factor: Inferred resource adds to the overall lithium endowment of the Mt Ida project. - Negative factor: Inferred category has lower geological confidence. Evidence · table > 1.1 Context: 7.1 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-25) Mt Ida · tantalum #### Identity - Project: Mt Ida - Commodity: tantalum - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:d502b9b815690a40596e #### Resource Data - Category: inferred - Tonnes: 7100000 - Grade: 126 - Grade Unit: ppm Ta2O5 - Cutoff Grade: 0.3 - Cutoff Unit: % Li2O #### Prior Estimate - Resource Date: 2026-09-29 #### Lab - Laboratory: ALS, Nagrom, NAL, SGS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The inferred tantalum resource at Mt Ida provides additional context for the polymetallic nature of the project, but its lower confidence category limits its immediate impact. - Positive factor: Tantalum is present as a byproduct in the inferred resource, adding potential value. - Negative factor: Inferred category has lower geological confidence. Evidence · table > 126 Context: 7.1 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-26) Mt Ida · rubidium #### Identity - Project: Mt Ida - Commodity: rubidium - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:d502b9b815690a40596e #### Resource Data - Category: inferred - Tonnes: 7100000 - Grade: 0.38 - Grade Unit: % Rb2O - Cutoff Grade: 0.3 - Cutoff Unit: % Li2O #### Prior Estimate - Resource Date: 2026-09-29 #### Lab - Laboratory: ALS, Nagrom, NAL, SGS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The inferred rubidium resource at Mt Ida provides additional context for the polymetallic nature of the project, but its lower confidence category limits its immediate impact. - Positive factor: Rubidium is present as a byproduct in the inferred resource, adding potential value. - Negative factor: Inferred category has lower geological confidence. Evidence · table > 0.38 Context: 7.1 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### Fact 16 [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-27) Mt Ida · lithium #### Identity - Project: Mt Ida - Commodity: lithium - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:f380a5127cca5227a58d #### Resource Data - Tonnes: 14800000 - Grade: 1.2 - Grade Unit: % Li2O - Contained Metal: 190 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: % Li2O #### Prior Estimate - Resource Date: 2026-09-29 #### Lab - Laboratory: ALS, Nagrom, NAL, SGS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The total resource at Mt Ida provides a significant baseline for the project, reflecting its current scale and grade. - Positive factor: Total resource of 14.8 Mt at 1.2% Li2O indicates a significant lithium endowment for the Mt Ida project. Evidence · table > 1.2 Context: 14.8 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### Fact 17 [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-28) Mt Ida · tantalum #### Identity - Project: Mt Ida - Commodity: tantalum - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:f380a5127cca5227a58d #### Resource Data - Tonnes: 14800000 - Grade: 173 - Grade Unit: ppm Ta2O5 - Cutoff Grade: 0.3 - Cutoff Unit: % Li2O #### Prior Estimate - Resource Date: 2026-09-29 #### Lab - Laboratory: ALS, Nagrom, NAL, SGS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The total tantalum resource at Mt Ida provides additional context for the polymetallic nature of the project. - Positive factor: Tantalum is present as a byproduct in the total resource, adding potential value. Evidence · table > 173 Context: 14.8 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### Fact 18 [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-29) Mt Ida · rubidium #### Identity - Project: Mt Ida - Commodity: rubidium - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:f380a5127cca5227a58d #### Resource Data - Tonnes: 14800000 - Grade: 0.42 - Grade Unit: % Rb2O - Cutoff Grade: 0.3 - Cutoff Unit: % Li2O #### Prior Estimate - Resource Date: 2026-09-29 #### Lab - Laboratory: ALS, Nagrom, NAL, SGS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The total rubidium resource at Mt Ida provides additional context for the polymetallic nature of the project. - Positive factor: Rubidium is present as a byproduct in the total resource, adding potential value. Evidence · table > 0.42 Context: 14.8 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-30) Yinnetharra · tantalum Historical result Needs review: historical\_restatement #### Identity - Project: Yinnetharra - Commodity: tantalum - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:ec27577e109c103a2223 - Deposit or zone: MT1 #### Resource Data - Category: indicated - Tonnes: 3700000 - Grade: 82 - Grade Unit: ppm Ta2O5 - Contained Metal: 0.3 - Contained Unit: kt - Cutoff Grade: 65 - Cutoff Unit: ppm Ta2O5 #### Prior Estimate - Resource Date: 2025-03-01 #### Lab - Laboratory: ALS Laboratories #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-03-01T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The historical indicated tantalum resource for the MT1 zone provides specific detail on the tantalum distribution within Yinnetharra. - Positive factor: Indicated tantalum resource for the MT1 zone contributes to the overall tantalum endowment of Yinnetharra. - Negative factor: This is a historical estimate from March 2025, reducing its novelty in this announcement. Evidence · table > 82 Context: 3.7 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-31) Yinnetharra · lithium Historical result Needs review: historical\_restatement #### Identity - Project: Yinnetharra - Commodity: lithium - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:ec27577e109c103a2223 - Deposit or zone: MT1 #### Resource Data - Category: indicated - Tonnes: 3700000 - Grade: 0.1 - Grade Unit: % Li2O - Contained Metal: 3 - Contained Unit: kt - Cutoff Grade: 65 - Cutoff Unit: ppm Ta2O5 #### Prior Estimate - Resource Date: 2025-03-01 #### Lab - Laboratory: ALS Laboratories #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-03-01T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The historical indicated lithium resource for the MT1 zone is low grade and primarily a byproduct, limiting its individual impact. - Positive factor: Lithium is present as a byproduct in the indicated tantalum resource for the MT1 zone. - Negative factor: This is a historical estimate from March 2025, reducing its novelty in this announcement. - Negative factor: Low lithium grade \(0.1% Li2O\). Evidence · table > 0.1 Context: 3.7 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-32) Yinnetharra · tantalum Historical result Needs review: historical\_restatement #### Identity - Project: Yinnetharra - Commodity: tantalum - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:1e054db548e63c7f4953 - Deposit or zone: MT1 #### Resource Data - Category: inferred - Tonnes: 600000 - Grade: 94 - Grade Unit: ppm Ta2O5 - Contained Metal: 0.1 - Contained Unit: kt - Cutoff Grade: 65 - Cutoff Unit: ppm Ta2O5 #### Prior Estimate - Resource Date: 2025-03-01 #### Lab - Laboratory: ALS Laboratories #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-03-01T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The historical inferred tantalum resource for the MT1 zone provides additional context, but its lower confidence and historical nature limit its impact. - Positive factor: Inferred tantalum resource for the MT1 zone adds to the overall tantalum endowment of Yinnetharra. - Negative factor: This is a historical estimate from March 2025, reducing its novelty in this announcement. - Negative factor: Inferred category has lower geological confidence. Evidence · table > 94 Context: 0.6 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-33) Yinnetharra · lithium Historical result Needs review: historical\_restatement #### Identity - Project: Yinnetharra - Commodity: lithium - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:1e054db548e63c7f4953 - Deposit or zone: MT1 #### Resource Data - Category: inferred - Tonnes: 600000 - Grade: 0 - Grade Unit: % Li2O - Contained Metal: 0 - Contained Unit: kt - Cutoff Grade: 65 - Cutoff Unit: ppm Ta2O5 #### Prior Estimate - Resource Date: 2025-03-01 #### Lab - Laboratory: ALS Laboratories #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-03-01T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The historical inferred lithium resource for the MT1 zone is negligible, providing little positive impact. - Negative factor: This is a historical estimate from March 2025, reducing its novelty in this announcement. - Negative factor: Very low lithium grade \(0.0% Li2O\) indicates negligible lithium content. - Negative factor: Inferred category has lower geological confidence. Evidence · table > 0.0 Context: 0.6 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-34) Yinnetharra · tantalum Historical result Needs review: historical\_restatement #### Identity - Project: Yinnetharra - Commodity: tantalum - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:f5baa69be9a3bfb4280c - Deposit or zone: MT20 #### Resource Data - Category: inferred - Tonnes: 200000 - Grade: 115 - Grade Unit: ppm Ta2O5 - Contained Metal: 0 - Contained Unit: kt - Cutoff Grade: 65 - Cutoff Unit: ppm Ta2O5 #### Prior Estimate - Resource Date: 2025-03-01 #### Lab - Laboratory: ALS Laboratories #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-03-01T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The historical inferred tantalum resource for the MT20 zone provides additional context, but its small scale, lower confidence, and historical nature limit its impact. - Positive factor: Inferred tantalum resource for the MT20 zone adds to the overall tantalum endowment of Yinnetharra. - Negative factor: This is a historical estimate from March 2025, reducing its novelty in this announcement. - Negative factor: Inferred category has lower geological confidence. Evidence · table > 115 Context: 0.2 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-35) Yinnetharra · lithium Historical result Needs review: historical\_restatement #### Identity - Project: Yinnetharra - Commodity: lithium - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:f5baa69be9a3bfb4280c - Deposit or zone: MT20 #### Resource Data - Category: inferred - Tonnes: 200000 - Grade: 0.1 - Grade Unit: % Li2O - Contained Metal: 0 - Contained Unit: kt - Cutoff Grade: 65 - Cutoff Unit: ppm Ta2O5 #### Prior Estimate - Resource Date: 2025-03-01 #### Lab - Laboratory: ALS Laboratories #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-03-01T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The historical inferred lithium resource for the MT20 zone is low grade and primarily a byproduct, limiting its individual impact. - Negative factor: This is a historical estimate from March 2025, reducing its novelty in this announcement. - Negative factor: Low lithium grade \(0.1% Li2O\). - Negative factor: Inferred category has lower geological confidence. Evidence · table > 0.1 Context: 0.2 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-36) Yinnetharra · tantalum Historical result Needs review: historical\_restatement #### Identity - Project: Yinnetharra - Commodity: tantalum - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:afe3dfb79c44c76ae9af - Deposit or zone: MT36 #### Resource Data - Category: indicated - Tonnes: 4300000 - Grade: 123 - Grade Unit: ppm Ta2O5 - Contained Metal: 0.5 - Contained Unit: kt - Cutoff Grade: 65 - Cutoff Unit: ppm Ta2O5 #### Prior Estimate - Resource Date: 2025-03-01 #### Lab - Laboratory: ALS Laboratories #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-03-01T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The historical indicated tantalum resource for the MT36 zone provides specific detail on the tantalum distribution within Yinnetharra. - Positive factor: Indicated tantalum resource for the MT36 zone contributes to the overall tantalum endowment of Yinnetharra. - Negative factor: This is a historical estimate from March 2025, reducing its novelty in this announcement. Evidence · table > 123 Context: 4.3 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-37) Yinnetharra · lithium Historical result Needs review: historical\_restatement #### Identity - Project: Yinnetharra - Commodity: lithium - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:afe3dfb79c44c76ae9af - Deposit or zone: MT36 #### Resource Data - Category: indicated - Tonnes: 4300000 - Grade: 0.1 - Grade Unit: % Li2O - Contained Metal: 5 - Contained Unit: kt - Cutoff Grade: 65 - Cutoff Unit: ppm Ta2O5 #### Prior Estimate - Resource Date: 2025-03-01 #### Lab - Laboratory: ALS Laboratories #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-03-01T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The historical indicated lithium resource for the MT36 zone is low grade and primarily a byproduct, limiting its individual impact. - Positive factor: Lithium is present as a byproduct in the indicated tantalum resource for the MT36 zone. - Negative factor: This is a historical estimate from March 2025, reducing its novelty in this announcement. - Negative factor: Low lithium grade \(0.1% Li2O\). Evidence · table > 0.1 Context: 4.3 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-38) Yinnetharra · tantalum Historical result Needs review: historical\_restatement #### Identity - Project: Yinnetharra - Commodity: tantalum - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:6122f56d7b84865d1ebe - Deposit or zone: MT36 #### Resource Data - Category: inferred - Tonnes: 600000 - Grade: 106 - Grade Unit: ppm Ta2O5 - Contained Metal: 0.1 - Contained Unit: kt - Cutoff Grade: 65 - Cutoff Unit: ppm Ta2O5 #### Prior Estimate - Resource Date: 2025-03-01 #### Lab - Laboratory: ALS Laboratories #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-03-01T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The historical inferred tantalum resource for the MT36 zone provides additional context, but its lower confidence and historical nature limit its impact. - Positive factor: Inferred tantalum resource for the MT36 zone adds to the overall tantalum endowment of Yinnetharra. - Negative factor: This is a historical estimate from March 2025, reducing its novelty in this announcement. - Negative factor: Inferred category has lower geological confidence. Evidence · table > 106 Context: 0.6 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-39) Yinnetharra · lithium Historical result Needs review: historical\_restatement #### Identity - Project: Yinnetharra - Commodity: lithium - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:6122f56d7b84865d1ebe - Deposit or zone: MT36 #### Resource Data - Category: inferred - Tonnes: 600000 - Grade: 0.1 - Grade Unit: % Li2O - Contained Metal: 1 - Contained Unit: kt - Cutoff Grade: 65 - Cutoff Unit: ppm Ta2O5 #### Prior Estimate - Resource Date: 2025-03-01 #### Lab - Laboratory: ALS Laboratories #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-03-01T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The historical inferred lithium resource for the MT36 zone is low grade and primarily a byproduct, limiting its individual impact. - Negative factor: This is a historical estimate from March 2025, reducing its novelty in this announcement. - Negative factor: Low lithium grade \(0.1% Li2O\). - Negative factor: Inferred category has lower geological confidence. Evidence · table > 0.1 Context: 0.6 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-40) Yinnetharra · tantalum Historical result Needs review: historical\_restatement #### Identity - Project: Yinnetharra - Commodity: tantalum - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:4784b879e926e3948bbe - Deposit or zone: MT42 #### Resource Data - Category: indicated - Tonnes: 300000 - Grade: 175 - Grade Unit: ppm Ta2O5 - Contained Metal: 0.1 - Contained Unit: kt - Cutoff Grade: 65 - Cutoff Unit: ppm Ta2O5 #### Prior Estimate - Resource Date: 2025-03-01 #### Lab - Laboratory: ALS Laboratories #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-03-01T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The historical indicated tantalum resource for the MT42 zone provides specific detail on the tantalum distribution within Yinnetharra. - Positive factor: Indicated tantalum resource for the MT42 zone contributes to the overall tantalum endowment of Yinnetharra. - Negative factor: This is a historical estimate from March 2025, reducing its novelty in this announcement. Evidence · table > 175 Context: 0.3 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-41) Yinnetharra · lithium Historical result Needs review: historical\_restatement #### Identity - Project: Yinnetharra - Commodity: lithium - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:4784b879e926e3948bbe - Deposit or zone: MT42 #### Resource Data - Category: indicated - Tonnes: 300000 - Grade: 0.2 - Grade Unit: % Li2O - Contained Metal: 1 - Contained Unit: kt - Cutoff Grade: 65 - Cutoff Unit: ppm Ta2O5 #### Prior Estimate - Resource Date: 2025-03-01 #### Lab - Laboratory: ALS Laboratories #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-03-01T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The historical indicated lithium resource for the MT42 zone is low grade and primarily a byproduct, limiting its individual impact. - Positive factor: Lithium is present as a byproduct in the indicated tantalum resource for the MT42 zone. - Negative factor: This is a historical estimate from March 2025, reducing its novelty in this announcement. - Negative factor: Low lithium grade \(0.2% Li2O\). Evidence · table > 0.2 Context: 0.3 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-42) Yinnetharra · tantalum Historical result Needs review: historical\_restatement #### Identity - Project: Yinnetharra - Commodity: tantalum - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:566797278942bebea378 - Deposit or zone: MT42 #### Resource Data - Category: inferred - Tonnes: 2500000 - Grade: 208 - Grade Unit: ppm Ta2O5 - Contained Metal: 0.5 - Contained Unit: kt - Cutoff Grade: 65 - Cutoff Unit: ppm Ta2O5 #### Prior Estimate - Resource Date: 2025-03-01 #### Lab - Laboratory: ALS Laboratories #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-03-01T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The historical inferred tantalum resource for the MT42 zone provides additional context, but its lower confidence and historical nature limit its impact. - Positive factor: Inferred tantalum resource for the MT42 zone adds to the overall tantalum endowment of Yinnetharra. - Negative factor: This is a historical estimate from March 2025, reducing its novelty in this announcement. - Negative factor: Inferred category has lower geological confidence. Evidence · table > 208 Context: 2.5 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-43) Yinnetharra · lithium Historical result Needs review: historical\_restatement #### Identity - Project: Yinnetharra - Commodity: lithium - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:566797278942bebea378 - Deposit or zone: MT42 #### Resource Data - Category: inferred - Tonnes: 2500000 - Grade: 0.1 - Grade Unit: % Li2O - Contained Metal: 2 - Contained Unit: kt - Cutoff Grade: 65 - Cutoff Unit: ppm Ta2O5 #### Prior Estimate - Resource Date: 2025-03-01 #### Lab - Laboratory: ALS Laboratories #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-03-01T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The historical inferred lithium resource for the MT42 zone is low grade and primarily a byproduct, limiting its individual impact. - Negative factor: This is a historical estimate from March 2025, reducing its novelty in this announcement. - Negative factor: Low lithium grade \(0.1% Li2O\). - Negative factor: Inferred category has lower geological confidence. Evidence · table > 0.1 Context: 2.5 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-44) Yinnetharra · tantalum Historical result Needs review: historical\_restatement #### Identity - Project: Yinnetharra - Commodity: tantalum - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:2ef3901c169eef8d2ef6 - Deposit or zone: MT47 #### Resource Data - Category: indicated - Tonnes: 2100000 - Grade: 186 - Grade Unit: ppm Ta2O5 - Contained Metal: 0.4 - Contained Unit: kt - Cutoff Grade: 65 - Cutoff Unit: ppm Ta2O5 #### Prior Estimate - Resource Date: 2025-03-01 #### Lab - Laboratory: ALS Laboratories #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-03-01T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The historical indicated tantalum resource for the MT47 zone provides specific detail on the tantalum distribution within Yinnetharra. - Positive factor: Indicated tantalum resource for the MT47 zone contributes to the overall tantalum endowment of Yinnetharra. - Negative factor: This is a historical estimate from March 2025, reducing its novelty in this announcement. Evidence · table > 186 Context: 2.1 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-45) Yinnetharra · lithium Historical result Needs review: historical\_restatement #### Identity - Project: Yinnetharra - Commodity: lithium - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:2ef3901c169eef8d2ef6 - Deposit or zone: MT47 #### Resource Data - Category: indicated - Tonnes: 2100000 - Grade: 0.1 - Grade Unit: % Li2O - Contained Metal: 3 - Contained Unit: kt - Cutoff Grade: 65 - Cutoff Unit: ppm Ta2O5 #### Prior Estimate - Resource Date: 2025-03-01 #### Lab - Laboratory: ALS Laboratories #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-03-01T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The historical indicated lithium resource for the MT47 zone is low grade and primarily a byproduct, limiting its individual impact. - Positive factor: Lithium is present as a byproduct in the indicated tantalum resource for the MT47 zone. - Negative factor: This is a historical estimate from March 2025, reducing its novelty in this announcement. - Negative factor: Low lithium grade \(0.1% Li2O\). Evidence · table > 0.1 Context: 2.1 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-46) Yinnetharra · tantalum Historical result Needs review: historical\_restatement #### Identity - Project: Yinnetharra - Commodity: tantalum - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:26ebd441fe7c0a5a9973 - Deposit or zone: MT47 #### Resource Data - Category: inferred - Tonnes: 500000 - Grade: 257 - Grade Unit: ppm Ta2O5 - Contained Metal: 0.1 - Contained Unit: kt - Cutoff Grade: 65 - Cutoff Unit: ppm Ta2O5 #### Prior Estimate - Resource Date: 2025-03-01 #### Lab - Laboratory: ALS Laboratories #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-03-01T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The historical inferred tantalum resource for the MT47 zone provides additional context, but its lower confidence and historical nature limit its impact. - Positive factor: Inferred tantalum resource for the MT47 zone adds to the overall tantalum endowment of Yinnetharra. - Negative factor: This is a historical estimate from March 2025, reducing its novelty in this announcement. - Negative factor: Inferred category has lower geological confidence. Evidence · table > 257 Context: 0.5 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-47) Yinnetharra · lithium Historical result Needs review: historical\_restatement #### Identity - Project: Yinnetharra - Commodity: lithium - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:26ebd441fe7c0a5a9973 - Deposit or zone: MT47 #### Resource Data - Category: inferred - Tonnes: 500000 - Grade: 0.1 - Grade Unit: % Li2O - Contained Metal: 0 - Contained Unit: kt - Cutoff Grade: 65 - Cutoff Unit: ppm Ta2O5 #### Prior Estimate - Resource Date: 2025-03-01 #### Lab - Laboratory: ALS Laboratories #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-03-01T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The historical inferred lithium resource for the MT47 zone is low grade and primarily a byproduct, limiting its individual impact. - Negative factor: This is a historical estimate from March 2025, reducing its novelty in this announcement. - Negative factor: Low lithium grade \(0.1% Li2O\). - Negative factor: Inferred category has lower geological confidence. Evidence · table > 0.1 Context: 0.5 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-48) Yinnetharra · tantalum Historical result Needs review: historical\_restatement #### Identity - Project: Yinnetharra - Commodity: tantalum - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:cc0b5f6eb69e7a95df86 - Deposit or zone: MT67 #### Resource Data - Category: inferred - Tonnes: 600000 - Grade: 113 - Grade Unit: ppm Ta2O5 - Contained Metal: 0.1 - Contained Unit: kt - Cutoff Grade: 65 - Cutoff Unit: ppm Ta2O5 #### Prior Estimate - Resource Date: 2025-03-01 #### Lab - Laboratory: ALS Laboratories #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-03-01T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The historical inferred tantalum resource for the MT67 zone provides additional context, but its lower confidence and historical nature limit its impact. - Positive factor: Inferred tantalum resource for the MT67 zone adds to the overall tantalum endowment of Yinnetharra. - Negative factor: This is a historical estimate from March 2025, reducing its novelty in this announcement. - Negative factor: Inferred category has lower geological confidence. Evidence · table > 113 Context: 0.6 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-49) Yinnetharra · lithium Historical result Needs review: historical\_restatement #### Identity - Project: Yinnetharra - Commodity: lithium - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:cc0b5f6eb69e7a95df86 - Deposit or zone: MT67 #### Resource Data - Category: inferred - Tonnes: 600000 - Grade: 0.2 - Grade Unit: % Li2O - Contained Metal: 1 - Contained Unit: kt - Cutoff Grade: 65 - Cutoff Unit: ppm Ta2O5 #### Prior Estimate - Resource Date: 2025-03-01 #### Lab - Laboratory: ALS Laboratories #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-03-01T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The historical inferred lithium resource for the MT67 zone is low grade and primarily a byproduct, limiting its individual impact. - Negative factor: This is a historical estimate from March 2025, reducing its novelty in this announcement. - Negative factor: Low lithium grade \(0.2% Li2O\). - Negative factor: Inferred category has lower geological confidence. Evidence · table > 0.2 Context: 0.6 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-50) Yinnetharra · tantalum Historical result Needs review: historical\_restatement #### Identity - Project: Yinnetharra - Commodity: tantalum - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:5543cb1615669694c7ac - Deposit or zone: MT69 #### Resource Data - Category: inferred - Tonnes: 1600000 - Grade: 105 - Grade Unit: ppm Ta2O5 - Contained Metal: 0.2 - Contained Unit: kt - Cutoff Grade: 65 - Cutoff Unit: ppm Ta2O5 #### Prior Estimate - Resource Date: 2025-03-01 #### Lab - Laboratory: ALS Laboratories #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-03-01T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The historical inferred tantalum resource for the MT69 zone provides additional context, but its lower confidence and historical nature limit its impact. - Positive factor: Inferred tantalum resource for the MT69 zone adds to the overall tantalum endowment of Yinnetharra. - Negative factor: This is a historical estimate from March 2025, reducing its novelty in this announcement. - Negative factor: Inferred category has lower geological confidence. Evidence · table > 105 Context: 1.6 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-51) Yinnetharra · lithium Historical result Needs review: historical\_restatement #### Identity - Project: Yinnetharra - Commodity: lithium - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:5543cb1615669694c7ac - Deposit or zone: MT69 #### Resource Data - Category: inferred - Tonnes: 1600000 - Grade: 0.1 - Grade Unit: % Li2O - Contained Metal: 2 - Contained Unit: kt - Cutoff Grade: 65 - Cutoff Unit: ppm Ta2O5 #### Prior Estimate - Resource Date: 2025-03-01 #### Lab - Laboratory: ALS Laboratories #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-03-01T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The historical inferred lithium resource for the MT69 zone is low grade and primarily a byproduct, limiting its individual impact. - Negative factor: This is a historical estimate from March 2025, reducing its novelty in this announcement. - Negative factor: Low lithium grade \(0.1% Li2O\). - Negative factor: Inferred category has lower geological confidence. Evidence · table > 0.1 Context: 1.6 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-52) Yinnetharra · tantalum Historical result Needs review: historical\_restatement #### Identity - Project: Yinnetharra - Commodity: tantalum - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:b8f7b4702c3b5438f44e - Deposit or zone: MT70 #### Resource Data - Category: inferred - Tonnes: 700000 - Grade: 161 - Grade Unit: ppm Ta2O5 - Contained Metal: 0.1 - Contained Unit: kt - Cutoff Grade: 65 - Cutoff Unit: ppm Ta2O5 #### Prior Estimate - Resource Date: 2025-03-01 #### Lab - Laboratory: ALS Laboratories #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-03-01T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The historical inferred tantalum resource for the MT70 zone provides additional context, but its lower confidence and historical nature limit its impact. - Positive factor: Inferred tantalum resource for the MT70 zone adds to the overall tantalum endowment of Yinnetharra. - Negative factor: This is a historical estimate from March 2025, reducing its novelty in this announcement. - Negative factor: Inferred category has lower geological confidence. Evidence · table > 161 Context: 0.7 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-53) Yinnetharra · lithium Historical result Needs review: historical\_restatement #### Identity - Project: Yinnetharra - Commodity: lithium - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:b8f7b4702c3b5438f44e - Deposit or zone: MT70 #### Resource Data - Category: inferred - Tonnes: 700000 - Grade: 0.1 - Grade Unit: % Li2O - Contained Metal: 1 - Contained Unit: kt - Cutoff Grade: 65 - Cutoff Unit: ppm Ta2O5 #### Prior Estimate - Resource Date: 2025-03-01 #### Lab - Laboratory: ALS Laboratories #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-03-01T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The historical inferred lithium resource for the MT70 zone is low grade and primarily a byproduct, limiting its individual impact. - Negative factor: This is a historical estimate from March 2025, reducing its novelty in this announcement. - Negative factor: Low lithium grade \(0.1% Li2O\). - Negative factor: Inferred category has lower geological confidence. Evidence · table > 0.1 Context: 0.7 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### Fact 43 [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-54) Yinnetharra · tantalum Historical result Needs review: historical\_restatement #### Identity - Project: Yinnetharra - Commodity: tantalum - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:1b62917ed4356779daf3 #### Resource Data - Tonnes: 10400000 - Grade: 122 - Grade Unit: ppm Ta2O5 - Contained Metal: 1.3 - Contained Unit: kt - Cutoff Grade: 65 - Cutoff Unit: ppm Ta2O5 #### Prior Estimate - Resource Date: 2025-03-01 #### Lab - Laboratory: ALS Laboratories #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-03-01T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The historical total indicated tantalum resource provides a significant baseline for the Yinnetharra project, though it is not new information. - Positive factor: Total indicated tantalum resource of 10.4 Mt at 122 ppm Ta2O5 adds to the overall tantalum endowment of Yinnetharra. - Negative factor: This is a historical estimate from March 2025, reducing its novelty in this announcement. Evidence · table > 122 Context: 10.4 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### Fact 44 [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-55) Yinnetharra · lithium Historical result Needs review: historical\_restatement #### Identity - Project: Yinnetharra - Commodity: lithium - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:1b62917ed4356779daf3 #### Resource Data - Tonnes: 10400000 - Grade: 0.1 - Grade Unit: % Li2O - Contained Metal: 12 - Contained Unit: kt - Cutoff Grade: 65 - Cutoff Unit: ppm Ta2O5 #### Prior Estimate - Resource Date: 2025-03-01 #### Lab - Laboratory: ALS Laboratories #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-03-01T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The historical total indicated lithium resource is low grade and primarily a byproduct, limiting its individual impact. - Positive factor: Lithium is present as a byproduct in the total indicated tantalum resource. - Negative factor: This is a historical estimate from March 2025, reducing its novelty in this announcement. - Negative factor: Low lithium grade \(0.1% Li2O\). Evidence · table > 0.1 Context: 10.4 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### Fact 45 [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-56) Yinnetharra · tantalum Historical result Needs review: historical\_restatement #### Identity - Project: Yinnetharra - Commodity: tantalum - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:3a508d644951477fd2f0 #### Resource Data - Tonnes: 7100000 - Grade: 156 - Grade Unit: ppm Ta2O5 - Contained Metal: 1.1 - Contained Unit: kt - Cutoff Grade: 65 - Cutoff Unit: ppm Ta2O5 #### Prior Estimate - Resource Date: 2025-03-01 #### Lab - Laboratory: ALS Laboratories #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-03-01T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The historical total inferred tantalum resource provides additional context, but its lower confidence and historical nature limit its impact. - Positive factor: Total inferred tantalum resource of 7.1 Mt at 156 ppm Ta2O5 adds to the overall tantalum endowment of Yinnetharra. - Negative factor: This is a historical estimate from March 2025, reducing its novelty in this announcement. - Negative factor: Inferred category has lower geological confidence. Evidence · table > 156 Context: 7.1 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### Fact 46 [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-57) Yinnetharra · lithium Historical result Needs review: historical\_restatement #### Identity - Project: Yinnetharra - Commodity: lithium - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:3a508d644951477fd2f0 #### Resource Data - Tonnes: 7100000 - Grade: 0.1 - Grade Unit: % Li2O - Contained Metal: 7 - Contained Unit: kt - Cutoff Grade: 65 - Cutoff Unit: ppm Ta2O5 #### Prior Estimate - Resource Date: 2025-03-01 #### Lab - Laboratory: ALS Laboratories #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-03-01T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The historical total inferred lithium resource is low grade and primarily a byproduct, limiting its individual impact. - Negative factor: This is a historical estimate from March 2025, reducing its novelty in this announcement. - Negative factor: Low lithium grade \(0.1% Li2O\). - Negative factor: Inferred category has lower geological confidence. Evidence · table > 0.1 Context: 7.1 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### Fact 47 [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-58) Yinnetharra · tantalum Historical result Needs review: historical\_restatement #### Identity - Project: Yinnetharra - Commodity: tantalum - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:cc3d8edf8e26de5bfeff #### Resource Data - Tonnes: 17500000 - Grade: 136 - Grade Unit: ppm Ta2O5 - Contained Metal: 2.4 - Contained Unit: kt - Cutoff Grade: 65 - Cutoff Unit: ppm Ta2O5 #### Prior Estimate - Resource Date: 2025-03-01 #### Lab - Laboratory: ALS Laboratories #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-03-01T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The historical total tantalum resource provides a significant baseline for the Yinnetharra project, though it is not new information. - Positive factor: Total tantalum resource of 17.5 Mt at 136 ppm Ta2O5 indicates a significant tantalum endowment for the Yinnetharra project. - Negative factor: This is a historical estimate from March 2025, reducing its novelty in this announcement. Evidence · table > 136 Context: 17.5 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### Fact 48 [Link to this fact](https://atlas-staging.minestarters.com/news/dli-yinnetharra-and-mt-ida-exploration-update--2c89e49b-ef58-44d2-85a1-06a616a0967e#fact-resource-facts-59) Yinnetharra · lithium Historical result Needs review: historical\_restatement #### Identity - Project: Yinnetharra - Commodity: lithium - Region: australia\_wa - Reported Region: Western Australia - Ticker: DLI #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Mr. Olaf Frederickson - Resource group id: resource:cc3d8edf8e26de5bfeff #### Resource Data - Tonnes: 17500000 - Grade: 0.1 - Grade Unit: % Li2O - Contained Metal: 19 - Contained Unit: kt - Cutoff Grade: 65 - Cutoff Unit: ppm Ta2O5 #### Prior Estimate - Resource Date: 2025-03-01 #### Lab - Laboratory: ALS Laboratories #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-03-01T00:00:00.000Z #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The historical total lithium resource is low grade and primarily a byproduct, limiting its individual impact. - Positive factor: Lithium is present as a byproduct in the total tantalum resource. - Negative factor: This is a historical estimate from March 2025, reducing its novelty in this announcement. - Negative factor: Low lithium grade \(0.1% Li2O\). Evidence · table > 0.1 Context: 17.5 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ## How Atlas produces this analysis Minestarters Atlas uses automated extraction to summarize mining announcements, identify reported measurements, and classify supporting evidence. Sentiment reflects the extracted narrative and classification rules; it is an interpretation, not a reported measurement. Evidence quotes and context are provided where available. Missing data, low-confidence results, and review flags indicate limitations. Check the original publisher announcement before relying on an interpretation.