# Heavy Rare Earths announces plans for Subron resource upgrade Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/heavy-rare-earths-announces-plans-for-subron-resource-upgrade--29837c27-02b6-4ee3-bd5a-68ff4cb6ce70 Original source: https://stockhead.com.au/resources/heavy-rare-earths-announces-plans-for-subron-resource-upgrade/ Publisher: stockhead Original announcement: 2026-10-02T01:08:32.000Z Analysis by Minestarters Atlas Atlas analysis published: 2026-10-02T03:03:54.832Z Atlas analysis updated: 2026-10-02T03:03:54.832Z - Company: Heavy Rare Earths - Ticker: HRE - Exchange: Unavailable - Region: Unavailable - Primary commodity: Rare earths - Secondary commodities: Gallium, Hafnium - Document categories: Resource update, Metallurgy, Drill results - Extracted: 2026-10-02 03:03:55 UTC Narrative sentiment: 0.60 · Bullish ## Minestarters Atlas summary Heavy Rare Earths \(ASX:HRE\) is undertaking a re-domaining exercise of its Subron project to target higher-grade heavy rare earth oxide \(HREO\) domains. The company aims to deliver an updated, higher-value resource estimate by mid-Q4 2026 using its existing database of 547 aircore holes. Reasoning: The company is re-interpreting an existing 159Mt inferred resource to isolate higher-grade zones, which is a significant value-unlocking step for an early-stage project. - Positive factor: Targeting higher-grade domains from existing database - Positive factor: High historical recovery reported \(91% TREO\) - Positive factor: Strategic re-domaining to concentrate value - Negative factor: Current resource is 100% Inferred - Negative factor: New resource estimate is still pending \(mid-Q4 2026\) Facts used in scoring: 4 ## 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 current resource is described as 159Mt inferred. Evidence · text > existing 159Mt inferred resource **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: The company is planning a targeted higher-grade resource update. Evidence · text > HRE is targeting a smaller resource of “substantially higher value” **Mill Route** Polarity: neutral Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\). Why it applies: the document describes a flotation route \("concentrate"\) **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: 4. Some facts used in scoring do not have a stored record. ## Drill Results (2) ### AC360 [Link to this fact](https://atlas-staging.minestarters.com/news/heavy-rare-earths-announces-plans-for-subron-resource-upgrade--29837c27-02b6-4ee3-bd5a-68ff4cb6ce70#fact-drill-facts-1) Subron South · rare\_earths Historical result Needs review: historical\_restatement #### Identity - Hole ID: AC360 - Project: Subron South - Commodity: rare\_earths - Region: australia - Reported Region: australia - Ticker: HRE #### Geometry - Grade: 3057 - Grade Unit: ppm - Intercept: 8 m - From: 27 m - To: 35 m - Intercept Depth: 27 m #### Classification - Sample Type: drill - Group ID: AC360:27-35 #### Location - Location: Seawolf prospect - Loc. Source: document #### QA/QC - QA/QC Disclosed: Yes - QA/QC Methods: standards, blanks #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-10-02T00:00:00.000Z Reasoning: Strong historical intercept used as a proof of concept for high-grade zones. - Positive factor: High TREO grade Evidence · text > historical hole AC360 returned an average 8m at 3,057ppm TREO #### 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 ### AC360 [Link to this fact](https://atlas-staging.minestarters.com/news/heavy-rare-earths-announces-plans-for-subron-resource-upgrade--29837c27-02b6-4ee3-bd5a-68ff4cb6ce70#fact-drill-facts-2) Subron South · rare\_earths Historical result Needs review: historical\_restatement #### Identity - Hole ID: AC360 - Project: Subron South - Commodity: rare\_earths - Region: australia - Reported Region: australia - Ticker: HRE #### Geometry - Grade: 1344 - Grade Unit: ppm - Intercept: 8 m - From: 27 m - To: 35 m - Intercept Depth: 27 m #### Classification - Sample Type: drill - Group ID: AC360:27-35 #### Location - Location: Seawolf prospect - Loc. Source: document #### QA/QC - QA/QC Disclosed: Yes - QA/QC Methods: standards, blanks #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-10-02T00:00:00.000Z Reasoning: High-value component of the TREO intercept. - Positive factor: High HREO grade Evidence · text > and 1,344ppm HREO from 27m #### 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 ## Resource Estimates (1) ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/heavy-rare-earths-announces-plans-for-subron-resource-upgrade--29837c27-02b6-4ee3-bd5a-68ff4cb6ce70#fact-resource-facts-0) Subron · rare\_earths Historical result Needs review: historical\_restatement #### Identity - Project: Subron - Commodity: rare\_earths - Ticker: HRE #### Resource scope - Estimate type: resource - Resource group id: resource:83b7d33662b78d54890d #### Resource Data - Category: inferred - Tonnes: 159000000 - Grade: 870 - Grade Unit: ppm #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes #### Dates - Event date: 2026-10-02T00:00:00.000Z Reasoning: Existing baseline resource being re-interpreted. - Negative factor: 100% Inferred category Evidence · text > existing 159Mt inferred resource at 870ppm total rare earth oxides \(TREO\) #### 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 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 **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 ## Metallurgical Results (1) ### Fact 1 [Link to this fact](https://atlas-staging.minestarters.com/news/heavy-rare-earths-announces-plans-for-subron-resource-upgrade--29837c27-02b6-4ee3-bd5a-68ff4cb6ce70#fact-metallurgical-facts-3) Subron · rare\_earths Historical result Needs review: historical\_restatement #### Identity - Project: Subron - Commodity: rare\_earths - Ticker: HRE #### Test Work - Processing Route: 5% hydrochloric acid at 30°C - Sample: Subron South preliminary leach work #### Recovery - Recovery: 91 % #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes #### Dates - Event date: 2026-10-02T00:00:00.000Z Reasoning: Strong preliminary leach results provide a foundation for processing selection. - Positive factor: High recovery \(91%\) Evidence · text > reported up to 91% TREO recovery from Subron South using 5% hydrochloric acid at 30°C ## 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.