# Quarterly Activities/Appendix 5B Cash Flow Report                                                                                                                  11 										                                             pages                                                                                       									                                                                                                                          579.0KB

Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/quarterly-activities-appendix-5b-cash-flow-report-11-pages-579-0kb--88b7aef2-5d90-4593-9a00-b7117ea01f46

Original source: https://www.asx.com.au/asx/v2/statistics/displayAnnouncement.do?display=pdf&idsId=03012270

Publisher: asx

Original announcement: 2025-10-20T00:00:00.000Z

Analysis by Minestarters Atlas

Atlas analysis published: 2026-10-01T04:40:37.514Z

Atlas analysis updated: 2026-10-01T04:40:37.514Z

- Company: Aurora Energy Metals Limited

- Ticker: 1AE

- Exchange: ASX

- Region: Oregon, USA

- Primary commodity: Uranium

- Secondary commodities: None reported

- Document categories: Metallurgy, Resource update, Other

- Extracted: 2026-10-01 04:40:38 UTC

Narrative sentiment: 0.80 · Bullish

## Minestarters Atlas summary

Aurora Energy Metals Limited reported strong metallurgical optimization results for its Aurora Uranium Project, confirming 82-86% uranium recoveries under optimized conditions. The program significantly reduced acid consumption and leach duration, simplified the flowsheet, and demonstrated solution recycling, leading to improved project economics. The company also provided an update on Eagle Energy Metals Corp.'s Nasdaq listing progress and restated its JORC-compliant uranium resource estimate from 2022, which totals 50.6 Mlbs U3O8.

Reasoning: The report highlights significant metallurgical optimization results for uranium, achieving high recoveries \(82-86%\) with reduced acid consumption and leach times, simplifying the flowsheet, and demonstrating solution recycling. This represents a material improvement in project economics. The resource update is a restatement of a prior JORC-compliant estimate from 2022, which is positive for its quality but low in novelty.

- Positive factor: High Recovery

- Positive factor: Recovery Improving

- Positive factor: Pilot Scale Complete

- Positive factor: Multi-Domain Tested

- Positive factor: QP/CP Signed

- Positive factor: JORC Compliant

- Negative factor: Stale Estimate

Low confidence — this extraction should be reviewed alongside the original source.

Facts used in scoring: 21

## Classification and evidence

**High Recovery**

Polarity: positive

Definition: Recovery at or above the exceptional band for the commodity and processing route.

Why it applies: The metallurgical optimization confirmed consistent uranium recoveries of 82 to 86 percent under optimized conditions, which is strong for a leach process.

Evidence · text

> consistent recoveries of 82 to 86 percent under optimised conditions

**Recovery Improving**

Polarity: positive

Definition: Recovery improved versus a like-for-like prior test program on the same domain and route.

Why it applies: The program demonstrated that initial acid addition could be reduced from more than 600 kg/t to 240-250 kg/t, and leach duration reduced from 24 hours to 12 hours, indicating significant process optimization and improvement.

Evidence · text

> initial acid addition could be reduced from more than 600 kilograms per tonne in 2024 to approximately 240 to 250 kilograms per tonne. As a result, overall acid consumption was reduced to about 70 to 90 kilograms per tonne. This step change in acid demand directly translates into lower operating costs. Ferric sulphate was found to be unnecessary to maintain high recoveries, removing this reagent from the flowsheet. Leach duration was also reduced from 24 hours to approximately 12 hours, which lowers capital intensity and improves process efficiency.

**Multi-Domain Tested**

Polarity: positive

Definition: Variability across ore domains \(oxide, transition, fresh\) has been addressed.

Why it applies: The test work confirmed that clay and middlings can be processed together without compromising recoveries, indicating variability across ore domains has been addressed.

Evidence · text

> The test work confirmed that clay and middlings can be processed together without compromising recoveries. Combined treatment removes the need for separate processing streams and simplifies the flowsheet, further reducing both capital and operating costs.

**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 metallurgical results are based on information compiled by Mr. Warren Hallam, a director of Aurora Energy Metals Limited and a Fellow of the Australasian Institute of Mining and Metallurgy \(FAusIMM\), who qualifies as a Competent Person.

Evidence · text

> Information in this announcement relating to Metallurgical Results is based on information compiled by Mr. Warren Hallam, BSc \(Metallurgy\), a director of Aurora Energy Metals Limited, who is a Fellow of the Australasian Institute of Mining and Metallurgy \(FAusIMM\) Mr. Hallam has sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration and to the activity which he has undertaken to qualify as a Competent Person under the 2012 Edition of the ‘Australasian Code for reporting of Exploration Results, Mineral Resources and Ore Reserves’. Mr. Hallam consents to the inclusion in the announcement of the matters based on the information made available to him, in the form and context in which it appears.

**JORC Compliant**

Polarity: positive

Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard.

Why it applies: The Mineral Resource for the AUP was first reported in a JORC-compliant announcement on 23 November 2022, and the company confirms it remains JORC compliant.

Evidence · text

> The Mineral Resource for the AUP was first reported by Aurora in its announcement titled ‘Uranium Resource Up 34% to 50.6Mlb, Maiden Measured Resource’ on 23 November 2022. Aurora Energy Metals Limited confirms that it is not aware of any new information or data that materially affects the information included in the original announcement and that all material assumptions and technical parameters underpinning the Mineral Resource continue to apply and have not materially changed.

**Stale Estimate**

Polarity: negative

Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding.

Why it applies: The resource estimate is a restatement of an estimate first reported on 23 November 2022, making it nearly three years old by the announcement date of October 2025.

Evidence · text

> The Mineral Resource for the AUP was first reported by Aurora in its announcement titled ‘Uranium Resource Up 34% to 50.6Mlb, Maiden Measured Resource’ on 23 November 2022.

**Resource Update**

Polarity: neutral

Definition: Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: The document provides an update on the company's existing mineral resource estimate for the Aurora Uranium Project, restating the figures from a prior announcement.

Evidence · text

> Aurora Uranium Project \(AUP\) in southeast Oregon; the USA’s largest mineable, measured and indicated uranium deposit \(MRE totals 107.3 Mt @ 214 ppm U3O8 for 50.6 Mlbs U3O8, including a Measured Mineral Resource of 59.5 Mt @ 251 ppm U3O8 for 32.9 Mlb U3O8, Indicated of 21.4 Mt @ 184 ppm U3O8 for 8.7 Mlb U3O8 and Inferred of 26.4 Mt @ 157 ppm U3O8 for 9.1 Mlb U3O8\).

**Mill Route**

Polarity: neutral

Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\).

Why it applies: The metallurgical test work describes a leach method, which is characteristic of a mill processing route for uranium.

Evidence · text

> Final metallurgy optimisation completed, confirming consistent recoveries of 82 to 86 percent under optimised conditions, including the ability to simplify the project flowsheet.

## Extracted facts

Stored fact records: 21. Some facts used in scoring do not have a stored record.

## Resource Estimates (3)

### measured

[Link to this fact](https://atlas-staging.minestarters.com/news/quarterly-activities-appendix-5b-cash-flow-report-11-pages-579-0kb--88b7aef2-5d90-4593-9a00-b7117ea01f46#fact-resource-facts-18)

Aurora Uranium Project · uranium

Historical result

Needs review: historical\_restatement

#### Identity

- Project: Aurora Uranium Project
- Commodity: uranium
- Region: oregon, usa
- Reported Region: Oregon, USA
- Ticker: 1AE

#### Resource scope

- Estimate type: resource
- Reporting standards: jorc
- QP Signed: Yes
- Qualified person names: Mr. Lauritz Barnes
- Resource group id: resource:1f2c0e5918d338168f17

#### Resource Data

- Category: measured
- Tonnes: 59500000
- Grade: 251
- Grade Unit: ppm U3O8
- Contained Metal: 32.9
- Contained Unit: mlb u3o8

#### Prior Estimate

- Resource Date: 2022-11-23

#### Review

- Needs Review: Yes
- Review Reason: historical\_restatement
- Historical: Yes
- Historical Source Date: 2022-11-23T00:00:00.000Z

#### Dates

- Event date: 2025-10-20T00:00:00.000Z

Reasoning: This is a restatement of a significant Measured Resource for uranium, indicating high confidence in the estimate, though it is not new information.

- Positive factor: Measured Resource

- Positive factor: JORC Compliant

- Positive factor: QP/CP Signed

- Negative factor: Stale Estimate

Evidence · text

> Measured Mineral Resource of 59.5 Mt @ 251 ppm U3O8 for 32.9 Mlb U3O8

#### 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 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

**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

**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

**PFS-Supporting**

Polarity: neutral

Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component.

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 2.9 years before this release

### indicated

[Link to this fact](https://atlas-staging.minestarters.com/news/quarterly-activities-appendix-5b-cash-flow-report-11-pages-579-0kb--88b7aef2-5d90-4593-9a00-b7117ea01f46#fact-resource-facts-19)

Aurora Uranium Project · uranium

Historical result

Needs review: historical\_restatement

#### Identity

- Project: Aurora Uranium Project
- Commodity: uranium
- Region: oregon, usa
- Reported Region: Oregon, USA
- Ticker: 1AE

#### Resource scope

- Estimate type: resource
- Reporting standards: jorc
- QP Signed: Yes
- Qualified person names: Mr. Lauritz Barnes
- Resource group id: resource:1daded9f94dc67a1830e

#### Resource Data

- Category: indicated
- Tonnes: 21400000
- Grade: 184
- Grade Unit: ppm U3O8
- Contained Metal: 8.7
- Contained Unit: mlb u3o8

#### Prior Estimate

- Resource Date: 2022-11-23

#### Review

- Needs Review: Yes
- Review Reason: historical\_restatement
- Historical: Yes
- Historical Source Date: 2022-11-23T00:00:00.000Z

#### Dates

- Event date: 2025-10-20T00:00:00.000Z

Reasoning: This is a restatement of a significant Indicated Resource for uranium, indicating reasonable confidence in the estimate, though it is not new information.

- Positive factor: Indicated Resource

- Positive factor: JORC Compliant

- Positive factor: QP/CP Signed

- Negative factor: Stale Estimate

Evidence · text

> Indicated of 21.4 Mt @ 184 ppm U3O8 for 8.7 Mlb U3O8

#### 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 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

**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

**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

**PFS-Supporting**

Polarity: neutral

Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component.

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 2.9 years before this release

### inferred

[Link to this fact](https://atlas-staging.minestarters.com/news/quarterly-activities-appendix-5b-cash-flow-report-11-pages-579-0kb--88b7aef2-5d90-4593-9a00-b7117ea01f46#fact-resource-facts-20)

Aurora Uranium Project · uranium

Historical result

Needs review: historical\_restatement

#### Identity

- Project: Aurora Uranium Project
- Commodity: uranium
- Region: oregon, usa
- Reported Region: Oregon, USA
- Ticker: 1AE

#### Resource scope

- Estimate type: resource
- Reporting standards: jorc
- QP Signed: Yes
- Qualified person names: Mr. Lauritz Barnes
- Resource group id: resource:ce420888bc7204b76579

#### Resource Data

- Category: inferred
- Tonnes: 26400000
- Grade: 157
- Grade Unit: ppm U3O8
- Contained Metal: 9.1
- Contained Unit: mlb u3o8

#### Prior Estimate

- Resource Date: 2022-11-23

#### Review

- Needs Review: Yes
- Review Reason: historical\_restatement
- Historical: Yes
- Historical Source Date: 2022-11-23T00:00:00.000Z

#### Dates

- Event date: 2025-10-20T00:00:00.000Z

Reasoning: This is a restatement of an Inferred Resource for uranium, indicating lower confidence in the estimate, and it is not new information.

- Positive factor: JORC Compliant

- Positive factor: QP/CP Signed

- Negative factor: Inferred Resource

- Negative factor: Stale Estimate

Evidence · text

> Inferred of 26.4 Mt @ 157 ppm U3O8 for 9.1 Mlb U3O8

#### 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

**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

**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

**PFS-Supporting**

Polarity: neutral

Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component.

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 2.9 years before this release

## Metallurgical Results (18)

### atmospheric leach

[Link to this fact](https://atlas-staging.minestarters.com/news/quarterly-activities-appendix-5b-cash-flow-report-11-pages-579-0kb--88b7aef2-5d90-4593-9a00-b7117ea01f46#fact-metallurgical-facts-0)

Aurora Uranium Project · uranium

#### Identity

- Project: Aurora Uranium Project
- Commodity: uranium
- Region: oregon, usa
- Reported Region: Oregon, USA
- Ticker: 1AE

#### Test Work

- Program Status: optimization
- Test Type: atmospheric leach
- Processing Route: leach
- Sample: Middlings Only
- Grind P80: 600 µm
- Leach Time: 24 hours

#### Recovery

- Recovery: 72 %
- Recovery Basis: actual\_test
- Head Grade: 381
- Head Grade Unit: ppm

#### Reagents

- Acid: 51 kg/t
- Reagent Notes: Initial Acid Addition: 150 kg/t

#### Lab

- Laboratory: ALS Metallurgy

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-10-20T00:00:00.000Z

Reasoning: This test result shows a moderate recovery for middlings material, with a relatively low acid consumption, but is superseded by later optimization results.

Evidence · table

> 72

Context: Middlings Only

### atmospheric leach

[Link to this fact](https://atlas-staging.minestarters.com/news/quarterly-activities-appendix-5b-cash-flow-report-11-pages-579-0kb--88b7aef2-5d90-4593-9a00-b7117ea01f46#fact-metallurgical-facts-1)

Aurora Uranium Project · uranium

#### Identity

- Project: Aurora Uranium Project
- Commodity: uranium
- Region: oregon, usa
- Reported Region: Oregon, USA
- Ticker: 1AE

#### Test Work

- Program Status: optimization
- Test Type: atmospheric leach
- Processing Route: leach
- Sample: Middlings Only
- Grind P80: 300 µm
- Leach Time: 24 hours

#### Recovery

- Recovery: 66 %
- Recovery Basis: actual\_test
- Head Grade: 381
- Head Grade Unit: ppm

#### Reagents

- Acid: 61 kg/t
- Reagent Notes: Initial Acid Addition: 150 kg/t

#### Lab

- Laboratory: ALS Metallurgy

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-10-20T00:00:00.000Z

Reasoning: This test result shows a moderate recovery for middlings material at a finer grind, but is superseded by later optimization results.

Evidence · table

> 66

Context: Middlings Only

### atmospheric leach

[Link to this fact](https://atlas-staging.minestarters.com/news/quarterly-activities-appendix-5b-cash-flow-report-11-pages-579-0kb--88b7aef2-5d90-4593-9a00-b7117ea01f46#fact-metallurgical-facts-2)

Aurora Uranium Project · uranium

#### Identity

- Project: Aurora Uranium Project
- Commodity: uranium
- Region: oregon, usa
- Reported Region: Oregon, USA
- Ticker: 1AE

#### Test Work

- Program Status: optimization
- Test Type: atmospheric leach
- Processing Route: leach
- Sample: Middlings Only
- Grind P80: 150 µm
- Leach Time: 24 hours

#### Recovery

- Recovery: 70 %
- Recovery Basis: actual\_test
- Head Grade: 381
- Head Grade Unit: ppm

#### Reagents

- Acid: 54 kg/t
- Reagent Notes: Initial Acid Addition: 150 kg/t

#### Lab

- Laboratory: ALS Metallurgy

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-10-20T00:00:00.000Z

Reasoning: This test result shows a moderate recovery for middlings material at a finer grind, but is superseded by later optimization results.

Evidence · table

> 70

Context: Middlings Only

### atmospheric leach

[Link to this fact](https://atlas-staging.minestarters.com/news/quarterly-activities-appendix-5b-cash-flow-report-11-pages-579-0kb--88b7aef2-5d90-4593-9a00-b7117ea01f46#fact-metallurgical-facts-3)

Aurora Uranium Project · uranium

#### Identity

- Project: Aurora Uranium Project
- Commodity: uranium
- Region: oregon, usa
- Reported Region: Oregon, USA
- Ticker: 1AE

#### Test Work

- Program Status: optimization
- Test Type: atmospheric leach
- Processing Route: leach
- Sample: Middlings Only
- Grind P80: 600 µm
- Leach Time: 24 hours

#### Recovery

- Recovery: 75 %
- Recovery Basis: actual\_test
- Head Grade: 381
- Head Grade Unit: ppm

#### Reagents

- Acid: 27 kg/t
- Reagent Notes: Initial Acid Addition: 150 kg/t

#### Lab

- Laboratory: ALS Metallurgy

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-10-20T00:00:00.000Z

Reasoning: This test result shows a good recovery for middlings material with low acid consumption, but is superseded by later optimization results.

Evidence · table

> 75

Context: Middlings Only

### atmospheric leach

[Link to this fact](https://atlas-staging.minestarters.com/news/quarterly-activities-appendix-5b-cash-flow-report-11-pages-579-0kb--88b7aef2-5d90-4593-9a00-b7117ea01f46#fact-metallurgical-facts-4)

Aurora Uranium Project · uranium

#### Identity

- Project: Aurora Uranium Project
- Commodity: uranium
- Region: oregon, usa
- Reported Region: Oregon, USA
- Ticker: 1AE

#### Test Work

- Program Status: optimization
- Test Type: atmospheric leach
- Processing Route: leach
- Sample: Middlings Only
- Grind P80: 600 µm
- Leach Time: 24 hours

#### Recovery

- Recovery: 89 %
- Recovery Basis: actual\_test
- Head Grade: 381
- Head Grade Unit: ppm

#### Reagents

- Acid: 133 kg/t
- Reagent Notes: Initial Acid Addition: 630 kg/t

#### Lab

- Laboratory: ALS Metallurgy

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-10-20T00:00:00.000Z

Reasoning: This test shows a strong recovery for middlings, indicating good metallurgical performance under specific conditions.

- Positive factor: High Recovery

Evidence · table

> 89

Context: Middlings Only

### atmospheric leach

[Link to this fact](https://atlas-staging.minestarters.com/news/quarterly-activities-appendix-5b-cash-flow-report-11-pages-579-0kb--88b7aef2-5d90-4593-9a00-b7117ea01f46#fact-metallurgical-facts-5)

Aurora Uranium Project · uranium

#### Identity

- Project: Aurora Uranium Project
- Commodity: uranium
- Region: oregon, usa
- Reported Region: Oregon, USA
- Ticker: 1AE

#### Test Work

- Program Status: optimization
- Test Type: atmospheric leach
- Processing Route: leach
- Sample: Middlings Only
- Grind P80: 600 µm
- Leach Time: 24 hours

#### Recovery

- Recovery: 90 %
- Recovery Basis: actual\_test
- Head Grade: 381
- Head Grade Unit: ppm

#### Reagents

- Acid: 142 kg/t
- Reagent Notes: Initial Acid Addition: 630 kg/t

#### Lab

- Laboratory: ALS Metallurgy

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-10-20T00:00:00.000Z

Reasoning: This test shows a strong recovery for middlings, indicating good metallurgical performance under specific conditions.

- Positive factor: High Recovery

Evidence · table

> 90

Context: Middlings Only

### atmospheric leach

[Link to this fact](https://atlas-staging.minestarters.com/news/quarterly-activities-appendix-5b-cash-flow-report-11-pages-579-0kb--88b7aef2-5d90-4593-9a00-b7117ea01f46#fact-metallurgical-facts-6)

Aurora Uranium Project · uranium

#### Identity

- Project: Aurora Uranium Project
- Commodity: uranium
- Region: oregon, usa
- Reported Region: Oregon, USA
- Ticker: 1AE

#### Test Work

- Program Status: optimization
- Test Type: atmospheric leach
- Processing Route: leach
- Sample: Middlings Only
- Grind P80: 600 µm
- Leach Time: 12 hours

#### Recovery

- Recovery: 77 %
- Recovery Basis: actual\_test
- Head Grade: 381
- Head Grade Unit: ppm

#### Reagents

- Acid: 69 kg/t
- Reagent Notes: Initial Acid Addition: 150 kg/t

#### Lab

- Laboratory: ALS Metallurgy

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-10-20T00:00:00.000Z

Reasoning: This test shows a moderate recovery for middlings with reduced leach time, indicating potential for process efficiency improvements.

Evidence · table

> 77

Context: Middlings Only

### atmospheric leach

[Link to this fact](https://atlas-staging.minestarters.com/news/quarterly-activities-appendix-5b-cash-flow-report-11-pages-579-0kb--88b7aef2-5d90-4593-9a00-b7117ea01f46#fact-metallurgical-facts-7)

Aurora Uranium Project · uranium

#### Identity

- Project: Aurora Uranium Project
- Commodity: uranium
- Region: oregon, usa
- Reported Region: Oregon, USA
- Ticker: 1AE

#### Test Work

- Program Status: optimization
- Test Type: atmospheric leach
- Processing Route: leach
- Sample: Middlings Only
- Grind P80: 600 µm
- Leach Time: 12 hours

#### Recovery

- Recovery: 93 %
- Recovery Basis: actual\_test
- Head Grade: 381
- Head Grade Unit: ppm

#### Reagents

- Acid: 43 kg/t
- Reagent Notes: Initial Acid Addition: 400 kg/t

#### Lab

- Laboratory: ALS Metallurgy

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-10-20T00:00:00.000Z

Reasoning: This test shows an excellent recovery for middlings with significantly reduced leach time and moderate acid consumption, indicating strong optimization potential.

- Positive factor: High Recovery

- Positive factor: Recovery Improving

Evidence · table

> 93

Context: Middlings Only

### atmospheric leach

[Link to this fact](https://atlas-staging.minestarters.com/news/quarterly-activities-appendix-5b-cash-flow-report-11-pages-579-0kb--88b7aef2-5d90-4593-9a00-b7117ea01f46#fact-metallurgical-facts-8)

Aurora Uranium Project · uranium

#### Identity

- Project: Aurora Uranium Project
- Commodity: uranium
- Region: oregon, usa
- Reported Region: Oregon, USA
- Ticker: 1AE

#### Test Work

- Program Status: optimization
- Test Type: atmospheric leach
- Processing Route: leach
- Sample: Middlings Only
- Grind P80: 600 µm
- Leach Time: 12 hours

#### Recovery

- Recovery: 89 %
- Recovery Basis: actual\_test
- Head Grade: 381
- Head Grade Unit: ppm

#### Reagents

- Acid: 33 kg/t
- Reagent Notes: Initial Acid Addition: 250 kg/t

#### Lab

- Laboratory: ALS Metallurgy

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-10-20T00:00:00.000Z

Reasoning: This test shows a strong recovery for middlings with reduced leach time and very low acid consumption, indicating strong optimization potential.

- Positive factor: High Recovery

- Positive factor: Recovery Improving

Evidence · table

> 89

Context: Middlings Only

### pressure leach

[Link to this fact](https://atlas-staging.minestarters.com/news/quarterly-activities-appendix-5b-cash-flow-report-11-pages-579-0kb--88b7aef2-5d90-4593-9a00-b7117ea01f46#fact-metallurgical-facts-9)

Aurora Uranium Project · uranium

#### Identity

- Project: Aurora Uranium Project
- Commodity: uranium
- Region: oregon, usa
- Reported Region: Oregon, USA
- Ticker: 1AE

#### Test Work

- Program Status: optimization
- Test Type: pressure leach
- Processing Route: pressure leach
- Sample: Clay Only
- Grind P80: 38 µm
- Leach Time: 2 hours

#### Recovery

- Recovery: 45 %
- Recovery Basis: actual\_test
- Head Grade: 350
- Head Grade Unit: ppm

#### Reagents

- Acid: 44 kg/t
- Reagent Notes: Initial Acid Addition: 150 kg/t

#### Lab

- Laboratory: ALS Metallurgy

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-10-20T00:00:00.000Z

Reasoning: This test shows a low recovery for clay material under pressure leach conditions, indicating challenges with this material type or process.

- Negative factor: Low Recovery

Evidence · table

> 45

Context: Clay Only

### atmospheric leach

[Link to this fact](https://atlas-staging.minestarters.com/news/quarterly-activities-appendix-5b-cash-flow-report-11-pages-579-0kb--88b7aef2-5d90-4593-9a00-b7117ea01f46#fact-metallurgical-facts-10)

Aurora Uranium Project · uranium

#### Identity

- Project: Aurora Uranium Project
- Commodity: uranium
- Region: oregon, usa
- Reported Region: Oregon, USA
- Ticker: 1AE

#### Test Work

- Program Status: optimization
- Test Type: atmospheric leach
- Processing Route: leach
- Sample: Clay Only
- Grind P80: 38 µm
- Leach Time: 24 hours

#### Recovery

- Recovery: 88 %
- Recovery Basis: actual\_test
- Head Grade: 350
- Head Grade Unit: ppm

#### Reagents

- Acid: -17 kg/t
- Reagent Notes: Initial Acid Addition: 150 kg/t

#### Lab

- Laboratory: ALS Metallurgy

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-10-20T00:00:00.000Z

Reasoning: This test shows a strong recovery for clay material under atmospheric leach conditions, indicating good metallurgical performance.

- Positive factor: High Recovery

Evidence · table

> 88

Context: Clay Only

### pressure leach

[Link to this fact](https://atlas-staging.minestarters.com/news/quarterly-activities-appendix-5b-cash-flow-report-11-pages-579-0kb--88b7aef2-5d90-4593-9a00-b7117ea01f46#fact-metallurgical-facts-11)

Aurora Uranium Project · uranium

#### Identity

- Project: Aurora Uranium Project
- Commodity: uranium
- Region: oregon, usa
- Reported Region: Oregon, USA
- Ticker: 1AE

#### Test Work

- Program Status: optimization
- Test Type: pressure leach
- Processing Route: pressure leach
- Sample: Clay Only
- Grind P80: 38 µm
- Leach Time: 2 hours

#### Recovery

- Recovery: 85 %
- Recovery Basis: actual\_test
- Head Grade: 350
- Head Grade Unit: ppm

#### Reagents

- Acid: 125 kg/t
- Reagent Notes: Initial Acid Addition: 630 kg/t

#### Lab

- Laboratory: ALS Metallurgy

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-10-20T00:00:00.000Z

Reasoning: This test shows a strong recovery for clay material under pressure leach conditions, indicating good metallurgical performance.

- Positive factor: High Recovery

Evidence · table

> 85

Context: Clay Only

### atmospheric leach

[Link to this fact](https://atlas-staging.minestarters.com/news/quarterly-activities-appendix-5b-cash-flow-report-11-pages-579-0kb--88b7aef2-5d90-4593-9a00-b7117ea01f46#fact-metallurgical-facts-12)

Aurora Uranium Project · uranium

#### Identity

- Project: Aurora Uranium Project
- Commodity: uranium
- Region: oregon, usa
- Reported Region: Oregon, USA
- Ticker: 1AE

#### Test Work

- Program Status: optimization
- Test Type: atmospheric leach
- Processing Route: leach
- Sample: Clay Only
- Grind P80: 38 µm
- Leach Time: 24 hours

#### Recovery

- Recovery: 90 %
- Recovery Basis: actual\_test
- Head Grade: 350
- Head Grade Unit: ppm

#### Reagents

- Acid: 51 kg/t
- Reagent Notes: Initial Acid Addition: 630 kg/t

#### Lab

- Laboratory: ALS Metallurgy

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-10-20T00:00:00.000Z

Reasoning: This test shows a strong recovery for clay material under atmospheric leach conditions, indicating good metallurgical performance.

- Positive factor: High Recovery

Evidence · table

> 90

Context: Clay Only

### atmospheric leach

[Link to this fact](https://atlas-staging.minestarters.com/news/quarterly-activities-appendix-5b-cash-flow-report-11-pages-579-0kb--88b7aef2-5d90-4593-9a00-b7117ea01f46#fact-metallurgical-facts-13)

Aurora Uranium Project · uranium

#### Identity

- Project: Aurora Uranium Project
- Commodity: uranium
- Region: oregon, usa
- Reported Region: Oregon, USA
- Ticker: 1AE

#### Test Work

- Program Status: optimization
- Test Type: atmospheric leach
- Processing Route: leach
- Sample: Combined Middlings & Clay
- Grind P80: 600 µm
- Leach Time: 12 hours

#### Recovery

- Recovery: 82 %
- Recovery Basis: actual\_test
- Head Grade: 389
- Head Grade Unit: ppm

#### Reagents

- Acid: 84 kg/t
- Reagent Notes: Initial Acid Addition: 270 kg/t

#### Lab

- Laboratory: ALS Metallurgy

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-10-20T00:00:00.000Z

Reasoning: This test demonstrates strong recovery for combined middlings and clay, supporting a simplified flowsheet and improved project economics.

- Positive factor: High Recovery

- Positive factor: Multi-Domain Tested

Evidence · table

> 82

Context: Combined Middlings & Clay

### atmospheric leach

[Link to this fact](https://atlas-staging.minestarters.com/news/quarterly-activities-appendix-5b-cash-flow-report-11-pages-579-0kb--88b7aef2-5d90-4593-9a00-b7117ea01f46#fact-metallurgical-facts-14)

Aurora Uranium Project · uranium

#### Identity

- Project: Aurora Uranium Project
- Commodity: uranium
- Region: oregon, usa
- Reported Region: Oregon, USA
- Ticker: 1AE

#### Test Work

- Program Status: optimization
- Test Type: atmospheric leach
- Processing Route: leach
- Sample: Combined Middlings & Clay
- Grind P80: 601 µm
- Leach Time: 12 hours

#### Recovery

- Recovery: 86 %
- Recovery Basis: actual\_test
- Head Grade: 389
- Head Grade Unit: ppm

#### Reagents

- Acid: 95 kg/t
- Reagent Notes: Initial Acid Addition: 240 kg/t

#### Lab

- Laboratory: ALS Metallurgy

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-10-20T00:00:00.000Z

Reasoning: This test demonstrates strong recovery for combined middlings and clay with optimized acid addition, supporting a simplified flowsheet and improved project economics.

- Positive factor: High Recovery

- Positive factor: Multi-Domain Tested

- Positive factor: Recovery Improving

Evidence · table

> 86

Context: Combined Middlings & Clay

### atmospheric leach

[Link to this fact](https://atlas-staging.minestarters.com/news/quarterly-activities-appendix-5b-cash-flow-report-11-pages-579-0kb--88b7aef2-5d90-4593-9a00-b7117ea01f46#fact-metallurgical-facts-15)

Aurora Uranium Project · uranium

#### Identity

- Project: Aurora Uranium Project
- Commodity: uranium
- Region: oregon, usa
- Reported Region: Oregon, USA
- Ticker: 1AE

#### Test Work

- Program Status: optimization
- Test Type: atmospheric leach
- Processing Route: leach
- Sample: Combined Middlings & Clay
- Grind P80: 602 µm
- Leach Time: 12 hours

#### Recovery

- Recovery: 84 %
- Recovery Basis: actual\_test
- Head Grade: 389
- Head Grade Unit: ppm

#### Reagents

- Acid: 64 kg/t
- Reagent Notes: Initial Acid Addition: 240 kg/t

#### Lab

- Laboratory: ALS Metallurgy

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-10-20T00:00:00.000Z

Reasoning: This test demonstrates strong recovery for combined middlings and clay with optimized acid addition, supporting a simplified flowsheet and improved project economics.

- Positive factor: High Recovery

- Positive factor: Multi-Domain Tested

Evidence · table

> 84

Context: Combined Middlings & Clay

### atmospheric leach

[Link to this fact](https://atlas-staging.minestarters.com/news/quarterly-activities-appendix-5b-cash-flow-report-11-pages-579-0kb--88b7aef2-5d90-4593-9a00-b7117ea01f46#fact-metallurgical-facts-16)

Aurora Uranium Project · uranium

#### Identity

- Project: Aurora Uranium Project
- Commodity: uranium
- Region: oregon, usa
- Reported Region: Oregon, USA
- Ticker: 1AE

#### Test Work

- Program Status: optimization
- Test Type: atmospheric leach
- Processing Route: leach
- Sample: Combined Middlings & Clay
- Grind P80: 603 µm
- Leach Time: 12 hours

#### Recovery

- Recovery: 80 %
- Recovery Basis: actual\_test
- Head Grade: 389
- Head Grade Unit: ppm

#### Reagents

- Acid: 66 kg/t
- Reagent Notes: Initial Acid Addition: 240 kg/t

#### Lab

- Laboratory: ALS Metallurgy

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-10-20T00:00:00.000Z

Reasoning: This test demonstrates good recovery for combined middlings and clay with optimized acid addition, supporting a simplified flowsheet and improved project economics.

- Positive factor: Multi-Domain Tested

Evidence · table

> 80

Context: Combined Middlings & Clay

### atmospheric leach

[Link to this fact](https://atlas-staging.minestarters.com/news/quarterly-activities-appendix-5b-cash-flow-report-11-pages-579-0kb--88b7aef2-5d90-4593-9a00-b7117ea01f46#fact-metallurgical-facts-17)

Aurora Uranium Project · uranium

#### Identity

- Project: Aurora Uranium Project
- Commodity: uranium
- Region: oregon, usa
- Reported Region: Oregon, USA
- Ticker: 1AE

#### Test Work

- Program Status: optimization
- Test Type: atmospheric leach
- Processing Route: leach
- Sample: Combined Middlings & Clay
- Grind P80: 604 µm
- Leach Time: 12 hours

#### Recovery

- Recovery: 83 %
- Recovery Basis: actual\_test
- Head Grade: 389
- Head Grade Unit: ppm

#### Reagents

- Acid: 83 kg/t
- Reagent Notes: Initial Acid Addition: 239 kg/t

#### Lab

- Laboratory: ALS Metallurgy

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-10-20T00:00:00.000Z

Reasoning: This test demonstrates strong recovery for combined middlings and clay with optimized acid addition, supporting a simplified flowsheet and improved project economics.

- Positive factor: High Recovery

- Positive factor: Multi-Domain Tested

Evidence · table

> 83

Context: Combined Middlings & Clay

## 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.