# RTR: Earaheedy Zinc project Update Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/rtr-earaheedy-zinc-project-update--3d8d02ae-2637-4391-bb47-426228a13c89 Original source: https://www.asx.com.au/asx/v2/statistics/displayAnnouncement.do?display=pdf&idsId=03151530 Publisher: asx Original announcement: 2026-10-12T22:12:00.000Z Analysis by Minestarters Atlas Atlas analysis published: 2026-10-12T23:29:44.852Z Atlas analysis updated: 2026-10-12T23:29:44.852Z - Company: Rumble Resources Limited - Ticker: RTR - Exchange: ASX - Region: Western Australia - Primary commodity: Zinc - Secondary commodities: Lead, Silver - Document categories: Resource update, Metallurgy - Extracted: 2026-10-12 23:29:45 UTC Narrative sentiment: 0.10 · Bullish ## Minestarters Atlas summary Rumble Resources has provided an update on its Earaheedy Zinc-Lead-Silver Project in Western Australia, highlighting a globally significant Inferred Mineral Resource of 94Mt at 3.1% Zn+Pb and 4.1g/t Ag. New metallurgical testwork on Chinook material demonstrated excellent zinc recoveries of 79% into a high-grade bulk concentrate, with potential for a simplified and cost-efficient flowsheet using innovative HydroFloat™ technology. The company plans further metallurgical work to separate zinc and lead/silver concentrates and is seeking strategic partners amidst a strengthening zinc price and tight bulk concentrate market. Reasoning: The update re-emphasizes a globally significant, but stale and 100% inferred, zinc-lead-silver resource. It also highlights positive metallurgical testwork results that suggest a simplified and cost-efficient processing strategy, though these results are a re-statement of prior news. The main positive novelty comes from the market commentary on strengthening zinc prices and a tight bulk concentrate market. - Positive factor: Globally significant resource - Positive factor: Positive metallurgical recoveries - Positive factor: Potential for reduced plant footprint and operating costs - Positive factor: Simplified flowsheet - Positive factor: Strengthening zinc price - Positive factor: Tight bulk concentrate market - Positive factor: Exploration upside - Negative factor: Resource is 100% Inferred - Negative factor: Resource estimate is stale \(effective date >2 years old\) - Negative factor: Metallurgical results are a re-statement of prior news - Negative factor: Metal equivalent assumptions not disclosed Facts used in scoring: 19 ## Classification and evidence **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: The document reports a 'Maiden Inferred Mineral Resource Estimate'. Evidence · text > Maiden Inferred Mineral Resource Estimate **All Inferred** Polarity: negative Definition: 100% of resource is Inferred category — very early stage, no engineering confidence. Why it applies: The resource tabulation is entirely for 'Inferred' categories. Evidence · text > Maiden Inferred Mineral Resource tabulation **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: The document states that resource estimates are prepared in accordance with the JORC classification system. Evidence · text > prepared in accordance with the requirements of Australian securities laws, which may differ from the requirements of United States and other country securities laws. Unless otherwise indicated, all ore reserve and mineral resource estimates included or incorporated by reference in this document have been, and will be, prepared in accordance with the JORC classification system of the Australasian Institute of Mining, and Metallurgy and Australian Institute of Geoscientists. **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: The resource estimate is reported 'at a 2% Zn+Pb cutoff' and the table provides various cut-off grades. Evidence · text > at a 2% Zn+Pb cutoff **Metal Equivalent Opaque** Polarity: negative Story-specific tag Definition: Metal equivalent grade reported without disclosing the price, recovery, or payability assumptions used. Why it applies: The resource reports a 'Zn+Pb' equivalent grade without disclosing the underlying price, recovery, or payability assumptions. Evidence · text > 3.1% Zn+Pb **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: The effective date of the resource estimate is April 2023, which is more than two years old at the time of this October 2026 announcement. Evidence · text > In April 2023 the Company announced a globally significant, pit constrained, maiden Inferred Mineral Resource Estimate **High Recovery** Polarity: positive Definition: Recovery at or above the exceptional band for the commodity and processing route. Why it applies: 79% Zn recovery is considered strong for flotation processing. Evidence · text > recoveries of 79% Zn were achieved **Pilot Scale Complete** Polarity: positive Definition: Pilot or demonstration plant testing completed under continuous operation. Why it applies: The metallurgical testwork included 'Pilot beneficiation trials'. Evidence · text > Pilot beneficiation trials **Stale Data Re-release** Polarity: negative Story-specific tag Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: The metallurgical results are re-stated from a November 2024 ASX release. Evidence · text > The metallurgical test work program was completed in November 2024 and the highlights included2: ... 2 Refer Rumble ASX release dated 28 November 2024 titled “Excellent Metallurgical Results for Earaheedy Project” **Mill Route** Polarity: neutral Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\). Why it applies: the document describes a flotation route \("flotation"\) **Gravity Route** Polarity: neutral Definition: Gravity separation forms a material part of the flowsheet. Why it applies: the document describes a gravity route \("DMS"\) **Single Domain Only** Polarity: negative Definition: Testing limited to one composite or domain — representativeness not established. Why it applies: only one composite was tested ## Extracted facts Stored fact records: 19. Some facts used in scoring do not have a stored record. ## Resource Estimates (18) ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/rtr-earaheedy-zinc-project-update--3d8d02ae-2637-4391-bb47-426228a13c89#fact-resource-facts-0) Earaheedy Project · zinc Historical result Needs review: historical\_restatement #### Identity - Project: Earaheedy Project - Commodity: zinc - Region: australia\_wa - Reported Region: Western Australia - Ticker: RTR #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:2cce626685c65decc1a4 #### Resource Data - Category: inferred - Tonnes: 462000000 - Grade: 1 - Grade Unit: % - Cutoff Grade: 0.5 - Cutoff Unit: % Zn+Pb #### Prior Estimate - Resource Date: 2023-04-19 #### Metal Equivalent - Metal Eq. Grade: 1.3 - Metal Eq. Unit: % Zn+Pb - Assumptions Disclosed: No #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2023-04-19T00:00:00.000Z #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: The resource estimate is large and JORC compliant, but it is 100% Inferred, stale \(effective date April 2023\), and the metal equivalent assumptions are not disclosed. - Positive factor: Globally significant tonnage - Positive factor: JORC compliant - Negative factor: 100% Inferred category - Negative factor: Stale estimate \(effective date >2 years old\) - Negative factor: Metal equivalent assumptions not disclosed Evidence · table > 1.0 Context: 462 #### 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 **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 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 3.5 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/rtr-earaheedy-zinc-project-update--3d8d02ae-2637-4391-bb47-426228a13c89#fact-resource-facts-1) Earaheedy Project · lead Historical result Needs review: historical\_restatement #### Identity - Project: Earaheedy Project - Commodity: lead - Region: australia\_wa - Reported Region: Western Australia - Ticker: RTR #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:2cce626685c65decc1a4 #### Resource Data - Category: inferred - Tonnes: 462000000 - Grade: 0.3 - Grade Unit: % - Cutoff Grade: 0.5 - Cutoff Unit: % Zn+Pb #### Prior Estimate - Resource Date: 2023-04-19 #### Metal Equivalent - Metal Eq. Grade: 1.3 - Metal Eq. Unit: % Zn+Pb - Assumptions Disclosed: No #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2023-04-19T00:00:00.000Z #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: The resource estimate is large and JORC compliant, but it is 100% Inferred, stale \(effective date April 2023\), and the metal equivalent assumptions are not disclosed. - Positive factor: Globally significant tonnage - Positive factor: JORC compliant - Negative factor: 100% Inferred category - Negative factor: Stale estimate \(effective date >2 years old\) - Negative factor: Metal equivalent assumptions not disclosed Evidence · table > 0.3 Context: 462 #### 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 **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 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 3.5 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/rtr-earaheedy-zinc-project-update--3d8d02ae-2637-4391-bb47-426228a13c89#fact-resource-facts-2) Earaheedy Project · silver Historical result Needs review: historical\_restatement #### Identity - Project: Earaheedy Project - Commodity: silver - Region: australia\_wa - Reported Region: Western Australia - Ticker: RTR #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:2cce626685c65decc1a4 #### Resource Data - Category: inferred - Tonnes: 462000000 - Grade: 2.2 - Grade Unit: g/t - Cutoff Grade: 0.5 - Cutoff Unit: % Zn+Pb #### Prior Estimate - Resource Date: 2023-04-19 #### Metal Equivalent - Metal Eq. Grade: 1.3 - Metal Eq. Unit: % Zn+Pb - Assumptions Disclosed: No #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2023-04-19T00:00:00.000Z #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: The resource estimate is large and JORC compliant, but it is 100% Inferred, stale \(effective date April 2023\), and the metal equivalent assumptions are not disclosed. - Positive factor: Globally significant tonnage - Positive factor: JORC compliant - Negative factor: 100% Inferred category - Negative factor: Stale estimate \(effective date >2 years old\) - Negative factor: Metal equivalent assumptions not disclosed Evidence · table > 2.2 Context: 462 #### 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 **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 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 3.5 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/rtr-earaheedy-zinc-project-update--3d8d02ae-2637-4391-bb47-426228a13c89#fact-resource-facts-3) Earaheedy Project · zinc Historical result Needs review: historical\_restatement #### Identity - Project: Earaheedy Project - Commodity: zinc - Region: australia\_wa - Reported Region: Western Australia - Ticker: RTR #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:f205935e6a16a12c5f72 #### Resource Data - Category: inferred - Tonnes: 194000000 - Grade: 1.6 - Grade Unit: % - Cutoff Grade: 1 - Cutoff Unit: % Zn+Pb #### Prior Estimate - Resource Date: 2023-04-19 #### Metal Equivalent - Metal Eq. Grade: 2.2 - Metal Eq. Unit: % Zn+Pb - Assumptions Disclosed: No #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2023-04-19T00:00:00.000Z #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: The resource estimate is large and JORC compliant, but it is 100% Inferred, stale \(effective date April 2023\), and the metal equivalent assumptions are not disclosed. - Positive factor: Globally significant tonnage - Positive factor: JORC compliant - Negative factor: 100% Inferred category - Negative factor: Stale estimate \(effective date >2 years old\) - Negative factor: Metal equivalent assumptions not disclosed Evidence · table > 1.6 Context: 194 #### 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 **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 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 3.5 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/rtr-earaheedy-zinc-project-update--3d8d02ae-2637-4391-bb47-426228a13c89#fact-resource-facts-4) Earaheedy Project · lead Historical result Needs review: historical\_restatement #### Identity - Project: Earaheedy Project - Commodity: lead - Region: australia\_wa - Reported Region: Western Australia - Ticker: RTR #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:f205935e6a16a12c5f72 #### Resource Data - Category: inferred - Tonnes: 194000000 - Grade: 0.5 - Grade Unit: % - Cutoff Grade: 1 - Cutoff Unit: % Zn+Pb #### Prior Estimate - Resource Date: 2023-04-19 #### Metal Equivalent - Metal Eq. Grade: 2.2 - Metal Eq. Unit: % Zn+Pb - Assumptions Disclosed: No #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2023-04-19T00:00:00.000Z #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: The resource estimate is large and JORC compliant, but it is 100% Inferred, stale \(effective date April 2023\), and the metal equivalent assumptions are not disclosed. - Positive factor: Globally significant tonnage - Positive factor: JORC compliant - Negative factor: 100% Inferred category - Negative factor: Stale estimate \(effective date >2 years old\) - Negative factor: Metal equivalent assumptions not disclosed Evidence · table > 0.5 Context: 194 #### 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 **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 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 3.5 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/rtr-earaheedy-zinc-project-update--3d8d02ae-2637-4391-bb47-426228a13c89#fact-resource-facts-5) Earaheedy Project · silver Historical result Needs review: historical\_restatement #### Identity - Project: Earaheedy Project - Commodity: silver - Region: australia\_wa - Reported Region: Western Australia - Ticker: RTR #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:f205935e6a16a12c5f72 #### Resource Data - Category: inferred - Tonnes: 194000000 - Grade: 3.1 - Grade Unit: g/t - Cutoff Grade: 1 - Cutoff Unit: % Zn+Pb #### Prior Estimate - Resource Date: 2023-04-19 #### Metal Equivalent - Metal Eq. Grade: 2.2 - Metal Eq. Unit: % Zn+Pb - Assumptions Disclosed: No #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2023-04-19T00:00:00.000Z #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: The resource estimate is large and JORC compliant, but it is 100% Inferred, stale \(effective date April 2023\), and the metal equivalent assumptions are not disclosed. - Positive factor: Globally significant tonnage - Positive factor: JORC compliant - Negative factor: 100% Inferred category - Negative factor: Stale estimate \(effective date >2 years old\) - Negative factor: Metal equivalent assumptions not disclosed Evidence · table > 3.1 Context: 194 #### 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 **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 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 3.5 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/rtr-earaheedy-zinc-project-update--3d8d02ae-2637-4391-bb47-426228a13c89#fact-resource-facts-6) Earaheedy Project · zinc Historical result Needs review: historical\_restatement #### Identity - Project: Earaheedy Project - Commodity: zinc - Region: australia\_wa - Reported Region: Western Australia - Ticker: RTR #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:3d2ae71914a3b7f15f7b #### Resource Data - Category: inferred - Tonnes: 94000000 - Grade: 2.4 - Grade Unit: % - Contained Metal: 2200000 - Contained Unit: t - Cutoff Grade: 2 - Cutoff Unit: % Zn+Pb #### Prior Estimate - Resource Date: 2023-04-19 #### Metal Equivalent - Metal Eq. Grade: 3.1 - Metal Eq. Unit: % Zn+Pb - Assumptions Disclosed: No #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2023-04-19T00:00:00.000Z #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: The resource estimate is large and JORC compliant, but it is 100% Inferred, stale \(effective date April 2023\), and the metal equivalent assumptions are not disclosed. - Positive factor: Globally significant tonnage - Positive factor: JORC compliant - Negative factor: 100% Inferred category - Negative factor: Stale estimate \(effective date >2 years old\) - Negative factor: Metal equivalent assumptions not disclosed Evidence · table > 2.4 Context: 94 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 3.5 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/rtr-earaheedy-zinc-project-update--3d8d02ae-2637-4391-bb47-426228a13c89#fact-resource-facts-7) Earaheedy Project · lead Historical result Needs review: historical\_restatement #### Identity - Project: Earaheedy Project - Commodity: lead - Region: australia\_wa - Reported Region: Western Australia - Ticker: RTR #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:3d2ae71914a3b7f15f7b #### Resource Data - Category: inferred - Tonnes: 94000000 - Grade: 0.7 - Grade Unit: % - Contained Metal: 700000 - Contained Unit: t - Cutoff Grade: 2 - Cutoff Unit: % Zn+Pb #### Prior Estimate - Resource Date: 2023-04-19 #### Metal Equivalent - Metal Eq. Grade: 3.1 - Metal Eq. Unit: % Zn+Pb - Assumptions Disclosed: No #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2023-04-19T00:00:00.000Z #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: The resource estimate is large and JORC compliant, but it is 100% Inferred, stale \(effective date April 2023\), and the metal equivalent assumptions are not disclosed. - Positive factor: Globally significant tonnage - Positive factor: JORC compliant - Negative factor: 100% Inferred category - Negative factor: Stale estimate \(effective date >2 years old\) - Negative factor: Metal equivalent assumptions not disclosed Evidence · table > 0.7 Context: 94 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 3.5 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/rtr-earaheedy-zinc-project-update--3d8d02ae-2637-4391-bb47-426228a13c89#fact-resource-facts-8) Earaheedy Project · silver Historical result Needs review: historical\_restatement #### Identity - Project: Earaheedy Project - Commodity: silver - Region: australia\_wa - Reported Region: Western Australia - Ticker: RTR #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:3d2ae71914a3b7f15f7b #### Resource Data - Category: inferred - Tonnes: 94000000 - Grade: 4.2 - Grade Unit: g/t - Contained Metal: 12600000 - Contained Unit: oz - Cutoff Grade: 2 - Cutoff Unit: % Zn+Pb #### Prior Estimate - Resource Date: 2023-04-19 #### Metal Equivalent - Metal Eq. Grade: 3.1 - Metal Eq. Unit: % Zn+Pb - Assumptions Disclosed: No #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2023-04-19T00:00:00.000Z #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: The resource estimate is large and JORC compliant, but it is 100% Inferred, stale \(effective date April 2023\), and the metal equivalent assumptions are not disclosed. - Positive factor: Globally significant tonnage - Positive factor: JORC compliant - Negative factor: 100% Inferred category - Negative factor: Stale estimate \(effective date >2 years old\) - Negative factor: Metal equivalent assumptions not disclosed Evidence · table > 4.2 Context: 94 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 3.5 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/rtr-earaheedy-zinc-project-update--3d8d02ae-2637-4391-bb47-426228a13c89#fact-resource-facts-9) Earaheedy Project · zinc Historical result Needs review: historical\_restatement #### Identity - Project: Earaheedy Project - Commodity: zinc - Region: australia\_wa - Reported Region: Western Australia - Ticker: RTR #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:60559a6f18d8fff458d3 #### Resource Data - Category: inferred - Tonnes: 65000000 - Grade: 2.6 - Grade Unit: % - Cutoff Grade: 2.5 - Cutoff Unit: % Zn+Pb #### Prior Estimate - Resource Date: 2023-04-19 #### Metal Equivalent - Metal Eq. Grade: 3.4 - Metal Eq. Unit: % Zn+Pb - Assumptions Disclosed: No #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2023-04-19T00:00:00.000Z #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: The resource estimate is large and JORC compliant, but it is 100% Inferred, stale \(effective date April 2023\), and the metal equivalent assumptions are not disclosed. - Positive factor: Globally significant tonnage - Positive factor: JORC compliant - Negative factor: 100% Inferred category - Negative factor: Stale estimate \(effective date >2 years old\) - Negative factor: Metal equivalent assumptions not disclosed Evidence · table > 2.6 Context: 65 #### 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 **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 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 3.5 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/rtr-earaheedy-zinc-project-update--3d8d02ae-2637-4391-bb47-426228a13c89#fact-resource-facts-10) Earaheedy Project · lead Historical result Needs review: historical\_restatement #### Identity - Project: Earaheedy Project - Commodity: lead - Region: australia\_wa - Reported Region: Western Australia - Ticker: RTR #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:60559a6f18d8fff458d3 #### Resource Data - Category: inferred - Tonnes: 65000000 - Grade: 0.8 - Grade Unit: % - Cutoff Grade: 2.5 - Cutoff Unit: % Zn+Pb #### Prior Estimate - Resource Date: 2023-04-19 #### Metal Equivalent - Metal Eq. Grade: 3.4 - Metal Eq. Unit: % Zn+Pb - Assumptions Disclosed: No #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2023-04-19T00:00:00.000Z #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: The resource estimate is large and JORC compliant, but it is 100% Inferred, stale \(effective date April 2023\), and the metal equivalent assumptions are not disclosed. - Positive factor: Globally significant tonnage - Positive factor: JORC compliant - Negative factor: 100% Inferred category - Negative factor: Stale estimate \(effective date >2 years old\) - Negative factor: Metal equivalent assumptions not disclosed Evidence · table > 0.8 Context: 65 #### 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 **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 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 3.5 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/rtr-earaheedy-zinc-project-update--3d8d02ae-2637-4391-bb47-426228a13c89#fact-resource-facts-11) Earaheedy Project · silver Historical result Needs review: historical\_restatement #### Identity - Project: Earaheedy Project - Commodity: silver - Region: australia\_wa - Reported Region: Western Australia - Ticker: RTR #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:60559a6f18d8fff458d3 #### Resource Data - Category: inferred - Tonnes: 65000000 - Grade: 4.5 - Grade Unit: g/t - Cutoff Grade: 2.5 - Cutoff Unit: % Zn+Pb #### Prior Estimate - Resource Date: 2023-04-19 #### Metal Equivalent - Metal Eq. Grade: 3.4 - Metal Eq. Unit: % Zn+Pb - Assumptions Disclosed: No #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2023-04-19T00:00:00.000Z #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: The resource estimate is large and JORC compliant, but it is 100% Inferred, stale \(effective date April 2023\), and the metal equivalent assumptions are not disclosed. - Positive factor: Globally significant tonnage - Positive factor: JORC compliant - Negative factor: 100% Inferred category - Negative factor: Stale estimate \(effective date >2 years old\) - Negative factor: Metal equivalent assumptions not disclosed Evidence · table > 4.5 Context: 65 #### 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 **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 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 3.5 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/rtr-earaheedy-zinc-project-update--3d8d02ae-2637-4391-bb47-426228a13c89#fact-resource-facts-12) Earaheedy Project · zinc Historical result Needs review: historical\_restatement #### Identity - Project: Earaheedy Project - Commodity: zinc - Region: australia\_wa - Reported Region: Western Australia - Ticker: RTR #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:c04b52b8a20ed5623ed4 #### Resource Data - Category: inferred - Tonnes: 41000000 - Grade: 3 - Grade Unit: % - Cutoff Grade: 3 - Cutoff Unit: % Zn+Pb #### Prior Estimate - Resource Date: 2023-04-19 #### Metal Equivalent - Metal Eq. Grade: 3.8 - Metal Eq. Unit: % Zn+Pb - Assumptions Disclosed: No #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2023-04-19T00:00:00.000Z #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: The resource estimate is large and JORC compliant, but it is 100% Inferred, stale \(effective date April 2023\), and the metal equivalent assumptions are not disclosed. - Positive factor: Globally significant tonnage - Positive factor: JORC compliant - Negative factor: 100% Inferred category - Negative factor: Stale estimate \(effective date >2 years old\) - Negative factor: Metal equivalent assumptions not disclosed Evidence · table > 3.0 Context: 41 #### 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 **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 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 3.5 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/rtr-earaheedy-zinc-project-update--3d8d02ae-2637-4391-bb47-426228a13c89#fact-resource-facts-13) Earaheedy Project · lead Historical result Needs review: historical\_restatement #### Identity - Project: Earaheedy Project - Commodity: lead - Region: australia\_wa - Reported Region: Western Australia - Ticker: RTR #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:c04b52b8a20ed5623ed4 #### Resource Data - Category: inferred - Tonnes: 41000000 - Grade: 0.9 - Grade Unit: % - Cutoff Grade: 3 - Cutoff Unit: % Zn+Pb #### Prior Estimate - Resource Date: 2023-04-19 #### Metal Equivalent - Metal Eq. Grade: 3.8 - Metal Eq. Unit: % Zn+Pb - Assumptions Disclosed: No #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2023-04-19T00:00:00.000Z #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: The resource estimate is large and JORC compliant, but it is 100% Inferred, stale \(effective date April 2023\), and the metal equivalent assumptions are not disclosed. - Positive factor: Globally significant tonnage - Positive factor: JORC compliant - Negative factor: 100% Inferred category - Negative factor: Stale estimate \(effective date >2 years old\) - Negative factor: Metal equivalent assumptions not disclosed Evidence · table > 0.9 Context: 41 #### 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 **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 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 3.5 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/rtr-earaheedy-zinc-project-update--3d8d02ae-2637-4391-bb47-426228a13c89#fact-resource-facts-14) Earaheedy Project · silver Historical result Needs review: historical\_restatement #### Identity - Project: Earaheedy Project - Commodity: silver - Region: australia\_wa - Reported Region: Western Australia - Ticker: RTR #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:c04b52b8a20ed5623ed4 #### Resource Data - Category: inferred - Tonnes: 41000000 - Grade: 4.9 - Grade Unit: g/t - Cutoff Grade: 3 - Cutoff Unit: % Zn+Pb #### Prior Estimate - Resource Date: 2023-04-19 #### Metal Equivalent - Metal Eq. Grade: 3.8 - Metal Eq. Unit: % Zn+Pb - Assumptions Disclosed: No #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2023-04-19T00:00:00.000Z #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: The resource estimate is large and JORC compliant, but it is 100% Inferred, stale \(effective date April 2023\), and the metal equivalent assumptions are not disclosed. - Positive factor: Globally significant tonnage - Positive factor: JORC compliant - Negative factor: 100% Inferred category - Negative factor: Stale estimate \(effective date >2 years old\) - Negative factor: Metal equivalent assumptions not disclosed Evidence · table > 4.9 Context: 41 #### 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 **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 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 3.5 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/rtr-earaheedy-zinc-project-update--3d8d02ae-2637-4391-bb47-426228a13c89#fact-resource-facts-15) Earaheedy Project · zinc Historical result Needs review: historical\_restatement #### Identity - Project: Earaheedy Project - Commodity: zinc - Region: australia\_wa - Reported Region: Western Australia - Ticker: RTR #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:cde347db2a50a4483f7d #### Resource Data - Category: inferred - Tonnes: 12000000 - Grade: 3.6 - Grade Unit: % - Cutoff Grade: 4 - Cutoff Unit: % Zn+Pb #### Prior Estimate - Resource Date: 2023-04-19 #### Metal Equivalent - Metal Eq. Grade: 4.8 - Metal Eq. Unit: % Zn+Pb - Assumptions Disclosed: No #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2023-04-19T00:00:00.000Z #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: The resource estimate is large and JORC compliant, but it is 100% Inferred, stale \(effective date April 2023\), and the metal equivalent assumptions are not disclosed. - Positive factor: Globally significant tonnage - Positive factor: JORC compliant - Negative factor: 100% Inferred category - Negative factor: Stale estimate \(effective date >2 years old\) - Negative factor: Metal equivalent assumptions not disclosed Evidence · table > 3.6 Context: 12 #### 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 **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 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 3.5 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/rtr-earaheedy-zinc-project-update--3d8d02ae-2637-4391-bb47-426228a13c89#fact-resource-facts-16) Earaheedy Project · lead Historical result Needs review: historical\_restatement #### Identity - Project: Earaheedy Project - Commodity: lead - Region: australia\_wa - Reported Region: Western Australia - Ticker: RTR #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:cde347db2a50a4483f7d #### Resource Data - Category: inferred - Tonnes: 12000000 - Grade: 1.2 - Grade Unit: % - Cutoff Grade: 4 - Cutoff Unit: % Zn+Pb #### Prior Estimate - Resource Date: 2023-04-19 #### Metal Equivalent - Metal Eq. Grade: 4.8 - Metal Eq. Unit: % Zn+Pb - Assumptions Disclosed: No #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2023-04-19T00:00:00.000Z #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: The resource estimate is large and JORC compliant, but it is 100% Inferred, stale \(effective date April 2023\), and the metal equivalent assumptions are not disclosed. - Positive factor: Globally significant tonnage - Positive factor: JORC compliant - Negative factor: 100% Inferred category - Negative factor: Stale estimate \(effective date >2 years old\) - Negative factor: Metal equivalent assumptions not disclosed Evidence · table > 1.2 Context: 12 #### 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 **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 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 3.5 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/rtr-earaheedy-zinc-project-update--3d8d02ae-2637-4391-bb47-426228a13c89#fact-resource-facts-17) Earaheedy Project · silver Historical result Needs review: historical\_restatement #### Identity - Project: Earaheedy Project - Commodity: silver - Region: australia\_wa - Reported Region: Western Australia - Ticker: RTR #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:cde347db2a50a4483f7d #### Resource Data - Category: inferred - Tonnes: 12000000 - Grade: 5.7 - Grade Unit: g/t - Cutoff Grade: 4 - Cutoff Unit: % Zn+Pb #### Prior Estimate - Resource Date: 2023-04-19 #### Metal Equivalent - Metal Eq. Grade: 4.8 - Metal Eq. Unit: % Zn+Pb - Assumptions Disclosed: No #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2023-04-19T00:00:00.000Z #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: The resource estimate is large and JORC compliant, but it is 100% Inferred, stale \(effective date April 2023\), and the metal equivalent assumptions are not disclosed. - Positive factor: Globally significant tonnage - Positive factor: JORC compliant - Negative factor: 100% Inferred category - Negative factor: Stale estimate \(effective date >2 years old\) - Negative factor: Metal equivalent assumptions not disclosed Evidence · table > 5.7 Context: 12 #### 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 **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 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 3.5 years before this release ## Metallurgical Results (1) ### pilot plant [Link to this fact](https://atlas-staging.minestarters.com/news/rtr-earaheedy-zinc-project-update--3d8d02ae-2637-4391-bb47-426228a13c89#fact-metallurgical-facts-18) Earaheedy Project · zinc Historical result Needs review: historical\_restatement #### Identity - Project: Earaheedy Project - Commodity: zinc - Region: australia\_wa - Reported Region: Western Australia - Ticker: RTR #### Test Work - Program Status: optimization - Test Type: pilot plant - Processing Route: flotation - Sample: Chinook deposit, with HydroFloat™ Technology - Grind P80: 200 µm #### Recovery - Recovery: 79 % - Recovery Basis: actual\_test - Conc. Grade: 61 - Conc. Grade Unit: % Zn+Pb #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2024-11-28T00:00:00.000Z #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: The metallurgical testwork shows high zinc recovery into a high-grade bulk concentrate using a coarse grind and innovative HydroFloat™ technology, suggesting a simplified and cost-efficient flowsheet. However, these results are a re-statement of prior news, and further work is needed for separate concentrates. - Positive factor: High zinc recovery \(79%\) - Positive factor: High-grade bulk concentrate \(61% Zn+Pb\) - Positive factor: Pilot scale testwork - Positive factor: Coarse grind for energy savings - Positive factor: Innovative HydroFloat™ technology for gangue rejection - Positive factor: Simplified and cost-efficient flowsheet - Negative factor: Metallurgical results are a re-statement of prior news - Negative factor: Further testwork needed for separate concentrates Evidence · text > recoveries of 79% Zn were achieved into a high-grade, 61% Zn+Pb bulk concentrate suitable for the Imperial Smelting Process \(ISP\), using a coarse primary grind \(P80 > 200μm\) #### Tags used in scoring **Mill Route** Polarity: neutral Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\). Why it applies: processing\_route matches the flotation signal **Pilot Scale Complete** Polarity: positive Definition: Pilot or demonstration plant testing completed under continuous operation. Why it applies: test\_type names pilot-scale work **Byproduct Commodity** Polarity: neutral Definition: The tested commodity is a byproduct rather than the primary economic driver. Why it applies: the release describes a byproduct credit ## 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.