# FINAL CESIUM TEST WORK SUCCESSFULLY COMPLETED AT CASE LAKE

Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211

Original source: https://money.tmx.com/en/quote/PWM/news/8387302811216347/final-cesium-test-work-successfully-completed-at-case-lake

Publisher: tmx

Original announcement: 2025-07-29T12:00:00.000Z

Analysis by Minestarters Atlas

Atlas analysis published: Unknown date

Atlas analysis updated: Unknown date

- Company: Power Metals Corp

- Ticker: PWM

- Exchange: TSX

- Region: Ontario, Canada

- Primary commodity: Cesium

- Secondary commodities: Rubidium, Silicon, Aluminum, Iron ore, Magnesium, Calcium, Sodium, Potassium, Titanium, Phosphorus, Manganese, Chromium, Vanadium, Silver, Arsenic, Barium, Beryllium, Bismuth, Cadmium, Cobalt, Copper, Molybdenum, Nickel, Lead, Antimony, Selenium, Tin, Strontium, Thallium, Yttrium, Zinc

- Document categories: Metallurgy

- Extracted: 2026-08-22 06:59:15 UTC

Narrative sentiment: 0.90 · Bullish

## Minestarters Atlas summary

Power Metals Corp has successfully completed final metallurgical test work for its Case Lake Cesium Project, achieving 97% cesium extraction efficiency from pollucite concentrate. The program also successfully produced technical grade cesium formate with 99.8% purity and cesium chloride with 99.6% purity. These results confirm the project's ability to produce industry-standard cesium chemicals, marking a significant milestone in de-risking the project for future production.

Reasoning: The final metallurgical test work successfully demonstrated high cesium extraction \(97%\) and produced high-purity technical grade cesium formate \(99.8%\) and cesium chloride \(99.6%\), confirming the project's viability and de-risking it for near-term production. The work was conducted by SGS Canada and reviewed by a Qualified Person.

- Positive factor: High Recovery

- Positive factor: High Purity

- Positive factor: QP/CP Signed

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

Facts used in scoring: 66

## Classification and evidence

**High Recovery**

Polarity: positive

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

Why it applies: Hot sulphuric acid leaching achieved 97% cesium extraction efficiency, which is above the exceptional band for typical metal recoveries.

Evidence · text

> achieving 97% cesium extraction efficiency \(Table 1\)

**High Recovery**

Polarity: positive

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

Why it applies: Two-stage crystallization achieved 95% and 98% cesium recovery, which is above the exceptional band for typical metal recoveries.

Evidence · text

> crystallization efficiency rates between 95% and 98%

**QP/CP Signed**

Polarity: positive

Story-specific tag

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 hydrometallurgical test work disclosure has been reviewed and approved by James Brown, MASc., P.Eng., Manager of Extractive Metallurgy at SGS Canada, a Qualified Person under NI 43-101.

Evidence · text

> The scientific and technical disclosure included in this news release for Hydrometallurgical test work has been reviewed and approved by James Brown , MASc., P.Eng., Manager of Extractive Metallurgy at SGS Canada, a Qualified Person under National Instrument 43-101 Standards of Disclosure of Mineral Projects \(NI 43-101\) and a member in good standing with Professional Engineers Ontario \(100114888\).

**Mill Route**

Polarity: neutral

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

Why it applies: The processing route involves hot acid leaching and crystallization, which are forms of chemical processing typically associated with mill-type operations.

Evidence · text

> hot acid leaching, cesium alum crystallization, and liquor treatment

**Single Domain Only**

Polarity: negative

Definition: Testing limited to one composite or domain — representativeness not established.

Why it applies: The test work was conducted on a 'blended concentrate sample' and 'composite sample' rather than explicitly testing multiple distinct ore domains.

Evidence · text

> The testwork used a blended concentrate sample with an average feed grade of 19.5% Cs₂O, created from pollucite concentrates 24-036-01P and 24-036-03P

## Extracted facts

Stored fact records: 66. Some facts used in scoring do not have a stored record.

## Metallurgical Results (66)

### hot acid leaching

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-0)

Case Lake Cesium Project · cesium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: cesium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: hot acid leaching
- Processing Route: hot sulphuric acid leaching
- Sample: blended pollucite concentrate sample with 19.5% Cs₂O feed grade
- Grind P80: 106 µm

#### Recovery

- Recovery: 97 %
- Recovery Basis: actual\_test
- Head Grade: 19.5
- Head Grade Unit: % Cs₂O

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Hot sulphuric acid leaching achieved 97% cesium extraction efficiency from pollucite concentrate, which is an exceptional recovery rate.

- Positive factor: High Recovery

Evidence · text

> achieving 97% cesium extraction efficiency \(Table 1\)

### crystallization

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-1)

Case Lake Cesium Project · cesium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: cesium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: crystallization
- Processing Route: two-stage crystallization \(50ºC and 20ºC\)
- Sample: Crude Cesium Alum Crystallization Combined \(50°C and 20°C\)

#### Recovery

- Recovery: 98 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Two-stage crystallization achieved 98% cesium recovery for crude cesium alum, indicating efficient separation.

- Positive factor: High Recovery

Evidence · table

> 98

Context: 71

### recrystallization

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-2)

Case Lake Cesium Project · cesium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: cesium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: recrystallization
- Processing Route: two-stage recrystallization \(50ºC and 20ºC\)
- Sample: Cesium Alum Recrystallization Combined \(50°C and 20°C\)

#### Recovery

- Recovery: 98 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Two-stage recrystallization achieved 98% cesium recovery for cesium alum, further enhancing purity.

- Positive factor: High Recovery

Evidence · table

> 98

Context: 89

### crystallization

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-3)

Case Lake Cesium Project · cesium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: cesium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: crystallization
- Processing Route: two-stage crystallization
- Sample: low-impurity cesium alum crystals

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Cesium alum crystals graded 21.4% Cs, indicating a good concentration of the target metal.

Evidence · text

> grading 21.4% Cs

### crystallization

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-4)

Case Lake Cesium Project · aluminum

#### Identity

- Project: Case Lake Cesium Project
- Commodity: aluminum
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: crystallization
- Processing Route: two-stage crystallization
- Sample: impurity in cesium alum crystals

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Aluminum is present as an impurity at 4.7% in the cesium alum crystals.

Evidence · text

> 4.7% Al

### crystallization

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-5)

Case Lake Cesium Project · rubidium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: rubidium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: crystallization
- Processing Route: two-stage crystallization
- Sample: impurity in cesium alum crystals

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Rubidium is present as a minor impurity at 0.01% in the cesium alum crystals.

Evidence · text

> 0.01% Rb

### crystallization

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-6)

Case Lake Cesium Project · silicon

#### Identity

- Project: Case Lake Cesium Project
- Commodity: silicon
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: crystallization
- Processing Route: two-stage crystallization
- Sample: impurity in cesium alum crystals

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Silicon is present as a minor impurity at 0.01% in the cesium alum crystals.

Evidence · text

> 0.01% Si

### hot acid leaching

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-7)

Case Lake Cesium Project · rubidium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: rubidium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: hot acid leaching
- Processing Route: hot sulphuric acid leaching
- Sample: pollucite concentrate leaching test

#### Recovery

- Recovery: 63 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Rubidium extraction rate of 63% during hot acid leaching test.

Evidence · table

> 63

Context: 97

### hot acid leaching

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-8)

Case Lake Cesium Project · silicon

#### Identity

- Project: Case Lake Cesium Project
- Commodity: silicon
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: hot acid leaching
- Processing Route: hot sulphuric acid leaching
- Sample: pollucite concentrate leaching test

#### Recovery

- Recovery: 8 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Silicon extraction rate of 8% during hot acid leaching test.

Evidence · table

> 8

Context: 95

### hot acid leaching

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-9)

Case Lake Cesium Project · aluminum

#### Identity

- Project: Case Lake Cesium Project
- Commodity: aluminum
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: hot acid leaching
- Processing Route: hot sulphuric acid leaching
- Sample: pollucite concentrate leaching test

#### Recovery

- Recovery: 58 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Aluminum extraction rate of 58% during hot acid leaching test.

Evidence · table

> 58

Context: 97

### hot acid leaching

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-10)

Case Lake Cesium Project · iron\_ore

#### Identity

- Project: Case Lake Cesium Project
- Commodity: iron\_ore
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: hot acid leaching
- Processing Route: hot sulphuric acid leaching
- Sample: pollucite concentrate leaching test

#### Recovery

- Recovery: 91 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Iron extraction rate of 91% during hot acid leaching test.

Evidence · table

> 91

Context: 97

### hot acid leaching

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-11)

Case Lake Cesium Project · magnesium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: magnesium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: hot acid leaching
- Processing Route: hot sulphuric acid leaching
- Sample: pollucite concentrate leaching test

#### Recovery

- Recovery: 77 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Magnesium extraction rate of 77% during hot acid leaching test.

Evidence · table

> 77

Context: 97

### hot acid leaching

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-12)

Case Lake Cesium Project · calcium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: calcium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: hot acid leaching
- Processing Route: hot sulphuric acid leaching
- Sample: pollucite concentrate leaching test

#### Recovery

- Recovery: 71 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Calcium extraction rate of 71% during hot acid leaching test.

Evidence · table

> 71

Context: 97

### hot acid leaching

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-13)

Case Lake Cesium Project · sodium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: sodium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: hot acid leaching
- Processing Route: hot sulphuric acid leaching
- Sample: pollucite concentrate leaching test

#### Recovery

- Recovery: 43 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Sodium extraction rate of 43% during hot acid leaching test.

Evidence · table

> 43

Context: 95

### hot acid leaching

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-14)

Case Lake Cesium Project · potassium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: potassium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: hot acid leaching
- Processing Route: hot sulphuric acid leaching
- Sample: pollucite concentrate leaching test

#### Recovery

- Recovery: 9 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Potassium extraction rate of 9% during hot acid leaching test.

Evidence · table

> 9

Context: 95

### hot acid leaching

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-15)

Case Lake Cesium Project · titanium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: titanium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: hot acid leaching
- Processing Route: hot sulphuric acid leaching
- Sample: pollucite concentrate leaching test

#### Recovery

- Recovery: 60 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Titanium extraction rate of 60% during hot acid leaching test.

Evidence · table

> 60

Context: 95

### hot acid leaching

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-16)

Case Lake Cesium Project · phosphorus

#### Identity

- Project: Case Lake Cesium Project
- Commodity: phosphorus
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: hot acid leaching
- Processing Route: hot sulphuric acid leaching
- Sample: pollucite concentrate leaching test

#### Recovery

- Recovery: 85 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Phosphorus extraction rate of 85% during hot acid leaching test.

Evidence · table

> 85

Context: 95

### hot acid leaching

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-17)

Case Lake Cesium Project · manganese

#### Identity

- Project: Case Lake Cesium Project
- Commodity: manganese
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: hot acid leaching
- Processing Route: hot sulphuric acid leaching
- Sample: pollucite concentrate leaching test

#### Recovery

- Recovery: 51 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Manganese extraction rate of 51% during hot acid leaching test.

Evidence · table

> 51

Context: 97

### hot acid leaching

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-18)

Case Lake Cesium Project · chromium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: chromium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: hot acid leaching
- Processing Route: hot sulphuric acid leaching
- Sample: pollucite concentrate leaching test

#### Recovery

- Recovery: 54 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Chromium extraction rate of 54% during hot acid leaching test.

Evidence · table

> 54

Context: 95

### hot acid leaching

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-19)

Case Lake Cesium Project · vanadium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: vanadium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: hot acid leaching
- Processing Route: hot sulphuric acid leaching
- Sample: pollucite concentrate leaching test

#### Recovery

- Recovery: 63 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Vanadium extraction rate of 63% during hot acid leaching test.

Evidence · table

> 63

Context: 95

### crystallization

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-20)

Case Lake Cesium Project · rubidium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: rubidium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: crystallization
- Processing Route: two-stage crystallization \(50ºC and 20ºC\)
- Sample: Crude Cesium Alum Crystallization Combined \(50°C and 20°C\)

#### Recovery

- Recovery: 37 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Rubidium crystallization rate of 37% during crude cesium alum crystallization.

Evidence · table

> 37

Context: 98

### crystallization

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-21)

Case Lake Cesium Project · aluminum

#### Identity

- Project: Case Lake Cesium Project
- Commodity: aluminum
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: crystallization
- Processing Route: two-stage crystallization \(50ºC and 20ºC\)
- Sample: Crude Cesium Alum Crystallization Combined \(50°C and 20°C\)

#### Recovery

- Recovery: 80 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Aluminum crystallization rate of 80% during crude cesium alum crystallization.

Evidence · table

> 80

Context: 98

### crystallization

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-22)

Case Lake Cesium Project · iron\_ore

#### Identity

- Project: Case Lake Cesium Project
- Commodity: iron\_ore
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: crystallization
- Processing Route: two-stage crystallization \(50ºC and 20ºC\)
- Sample: Crude Cesium Alum Crystallization Combined \(50°C and 20°C\)

#### Recovery

- Recovery: 13 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Iron crystallization rate of 13% during crude cesium alum crystallization.

Evidence · table

> 13

Context: 98

### crystallization

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-23)

Case Lake Cesium Project · magnesium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: magnesium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: crystallization
- Processing Route: two-stage crystallization \(50ºC and 20ºC\)
- Sample: Crude Cesium Alum Crystallization Combined \(50°C and 20°C\)

#### Recovery

- Recovery: 21 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Magnesium crystallization rate of 21% during crude cesium alum crystallization.

Evidence · table

> 21

Context: 98

### crystallization

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-24)

Case Lake Cesium Project · calcium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: calcium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: crystallization
- Processing Route: two-stage crystallization \(50ºC and 20ºC\)
- Sample: Crude Cesium Alum Crystallization Combined \(50°C and 20°C\)

#### Recovery

- Recovery: 80 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Calcium crystallization rate of 80% during crude cesium alum crystallization.

Evidence · table

> 80

Context: 98

### crystallization

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-25)

Case Lake Cesium Project · sodium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: sodium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: crystallization
- Processing Route: two-stage crystallization \(50ºC and 20ºC\)
- Sample: Crude Cesium Alum Crystallization Combined \(50°C and 20°C\)

#### Recovery

- Recovery: 8 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Sodium crystallization rate of 8% during crude cesium alum crystallization.

Evidence · table

> 8

Context: 98

### crystallization

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-26)

Case Lake Cesium Project · potassium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: potassium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: crystallization
- Processing Route: two-stage crystallization \(50ºC and 20ºC\)
- Sample: Crude Cesium Alum Crystallization Combined \(50°C and 20°C\)

#### Recovery

- Recovery: 20 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Potassium crystallization rate of 20% during crude cesium alum crystallization.

Evidence · table

> 20

Context: 98

### crystallization

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-27)

Case Lake Cesium Project · titanium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: titanium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: crystallization
- Processing Route: two-stage crystallization \(50ºC and 20ºC\)
- Sample: Crude Cesium Alum Crystallization Combined \(50°C and 20°C\)

#### Recovery

- Recovery: 18 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Titanium crystallization rate of 18% during crude cesium alum crystallization.

Evidence · table

> 18

Context: 98

### crystallization

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-28)

Case Lake Cesium Project · phosphorus

#### Identity

- Project: Case Lake Cesium Project
- Commodity: phosphorus
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: crystallization
- Processing Route: two-stage crystallization \(50ºC and 20ºC\)
- Sample: Crude Cesium Alum Crystallization Combined \(50°C and 20°C\)

#### Recovery

- Recovery: 9 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Phosphorus crystallization rate of 9% during crude cesium alum crystallization.

Evidence · table

> 9

Context: 98

### crystallization

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-29)

Case Lake Cesium Project · manganese

#### Identity

- Project: Case Lake Cesium Project
- Commodity: manganese
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: crystallization
- Processing Route: two-stage crystallization \(50ºC and 20ºC\)
- Sample: Crude Cesium Alum Crystallization Combined \(50°C and 20°C\)

#### Recovery

- Recovery: 15 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Manganese crystallization rate of 15% during crude cesium alum crystallization.

Evidence · table

> 15

Context: 98

### crystallization

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-30)

Case Lake Cesium Project · chromium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: chromium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: crystallization
- Processing Route: two-stage crystallization \(50ºC and 20ºC\)
- Sample: Crude Cesium Alum Crystallization Combined \(50°C and 20°C\)

#### Recovery

- Recovery: 40 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Chromium crystallization rate of 40% during crude cesium alum crystallization.

Evidence · table

> 40

Context: 98

### crystallization

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-31)

Case Lake Cesium Project · vanadium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: vanadium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: crystallization
- Processing Route: two-stage crystallization \(50ºC and 20ºC\)
- Sample: Crude Cesium Alum Crystallization Combined \(50°C and 20°C\)

#### Recovery

- Recovery: 88 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Vanadium crystallization rate of 88% during crude cesium alum crystallization.

Evidence · table

> 88

Context: 98

### recrystallization

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-32)

Case Lake Cesium Project · rubidium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: rubidium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: recrystallization
- Processing Route: two-stage recrystallization \(50ºC and 20ºC\)
- Sample: Cesium Alum Recrystallization Combined \(50°C and 20°C\)

#### Recovery

- Recovery: 8 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Rubidium recrystallization rate of 8% during cesium alum recrystallization.

Evidence · table

> 8

Context: 98

### recrystallization

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-33)

Case Lake Cesium Project · aluminum

#### Identity

- Project: Case Lake Cesium Project
- Commodity: aluminum
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: recrystallization
- Processing Route: two-stage recrystallization \(50ºC and 20ºC\)
- Sample: Cesium Alum Recrystallization Combined \(50°C and 20°C\)

#### Recovery

- Recovery: 71 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Aluminum recrystallization rate of 71% during cesium alum recrystallization.

Evidence · table

> 71

Context: 98

### recrystallization

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-34)

Case Lake Cesium Project · iron\_ore

#### Identity

- Project: Case Lake Cesium Project
- Commodity: iron\_ore
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: recrystallization
- Processing Route: two-stage recrystallization \(50ºC and 20ºC\)
- Sample: Cesium Alum Recrystallization Combined \(50°C and 20°C\)

#### Recovery

- Recovery: 10 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Iron recrystallization rate of 10% during cesium alum recrystallization.

Evidence · table

> 10

Context: 98

### recrystallization

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-35)

Case Lake Cesium Project · magnesium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: magnesium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: recrystallization
- Processing Route: two-stage recrystallization \(50ºC and 20ºC\)
- Sample: Cesium Alum Recrystallization Combined \(50°C and 20°C\)

#### Recovery

- Recovery: 39 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Magnesium recrystallization rate of 39% during cesium alum recrystallization.

Evidence · table

> 39

Context: 98

### recrystallization

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-36)

Case Lake Cesium Project · calcium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: calcium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: recrystallization
- Processing Route: two-stage recrystallization \(50ºC and 20ºC\)
- Sample: Cesium Alum Recrystallization Combined \(50°C and 20°C\)

#### Recovery

- Recovery: 2 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Calcium recrystallization rate of 2% during cesium alum recrystallization.

Evidence · table

> 2

Context: 98

### recrystallization

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-37)

Case Lake Cesium Project · sodium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: sodium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: recrystallization
- Processing Route: two-stage recrystallization \(50ºC and 20ºC\)
- Sample: Cesium Alum Recrystallization Combined \(50°C and 20°C\)

#### Recovery

- Recovery: 3 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Sodium recrystallization rate of 3% during cesium alum recrystallization.

Evidence · table

> 3

Context: 98

### recrystallization

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-38)

Case Lake Cesium Project · potassium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: potassium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: recrystallization
- Processing Route: two-stage recrystallization \(50ºC and 20ºC\)
- Sample: Cesium Alum Recrystallization Combined \(50°C and 20°C\)

#### Recovery

- Recovery: 17 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Potassium recrystallization rate of 17% during cesium alum recrystallization.

Evidence · table

> 17

Context: 98

### recrystallization

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-39)

Case Lake Cesium Project · titanium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: titanium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: recrystallization
- Processing Route: two-stage recrystallization \(50ºC and 20ºC\)
- Sample: Cesium Alum Recrystallization Combined \(50°C and 20°C\)

#### Recovery

- Recovery: 85 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Titanium recrystallization rate of 85% during cesium alum recrystallization.

Evidence · table

> 85

Context: 98

### recrystallization

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-40)

Case Lake Cesium Project · phosphorus

#### Identity

- Project: Case Lake Cesium Project
- Commodity: phosphorus
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: recrystallization
- Processing Route: two-stage recrystallization \(50ºC and 20ºC\)
- Sample: Cesium Alum Recrystallization Combined \(50°C and 20°C\)

#### Recovery

- Recovery: 15 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Phosphorus recrystallization rate of 15% during cesium alum recrystallization.

Evidence · table

> 15

Context: 98

### recrystallization

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-41)

Case Lake Cesium Project · manganese

#### Identity

- Project: Case Lake Cesium Project
- Commodity: manganese
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: recrystallization
- Processing Route: two-stage recrystallization \(50ºC and 20ºC\)
- Sample: Cesium Alum Recrystallization Combined \(50°C and 20°C\)

#### Recovery

- Recovery: 49 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Manganese recrystallization rate of 49% during cesium alum recrystallization.

Evidence · table

> 49

Context: 98

### recrystallization

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-42)

Case Lake Cesium Project · chromium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: chromium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: recrystallization
- Processing Route: two-stage recrystallization \(50ºC and 20ºC\)
- Sample: Cesium Alum Recrystallization Combined \(50°C and 20°C\)

#### Recovery

- Recovery: 45 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Chromium recrystallization rate of 45% during cesium alum recrystallization.

Evidence · table

> 45

Context: 98

### recrystallization

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-43)

Case Lake Cesium Project · vanadium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: vanadium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: recrystallization
- Processing Route: two-stage recrystallization \(50ºC and 20ºC\)
- Sample: Cesium Alum Recrystallization Combined \(50°C and 20°C\)

#### Recovery

- Recovery: 85 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Vanadium recrystallization rate of 85% during cesium alum recrystallization.

Evidence · table

> 85

Context: 98

### Fact 45

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-44)

Case Lake Cesium Project · cesium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: cesium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Sample: cesium formate solution

#### Recovery

- Head Grade: 1220
- Head Grade Unit: g/L

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Assay result for cesium in cesium formate solution.

Evidence · table

> 1220

Context: 1220

### Fact 46

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-45)

Case Lake Cesium Project · rubidium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: rubidium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Sample: cesium formate solution

#### Recovery

- Head Grade: 266
- Head Grade Unit: mg/L

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Assay result for rubidium in cesium formate solution.

Evidence · table

> 266

Context: 1220

### Fact 47

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-46)

Case Lake Cesium Project · barium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: barium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Sample: cesium formate solution

#### Recovery

- Head Grade: 226
- Head Grade Unit: mg/L

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Assay result for barium in cesium formate solution.

Evidence · table

> 226

Context: 1220

### Fact 48

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-47)

Case Lake Cesium Project · beryllium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: beryllium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Sample: cesium formate solution

#### Recovery

- Head Grade: 0.04
- Head Grade Unit: mg/L

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Assay result for beryllium in cesium formate solution.

Evidence · table

> 0.04

Context: 1220

### Fact 49

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-48)

Case Lake Cesium Project · calcium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: calcium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Sample: cesium formate solution

#### Recovery

- Head Grade: 19
- Head Grade Unit: mg/L

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Assay result for calcium in cesium formate solution.

Evidence · table

> 19

Context: 1220

### Fact 50

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-49)

Case Lake Cesium Project · cobalt

#### Identity

- Project: Case Lake Cesium Project
- Commodity: cobalt
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Sample: cesium formate solution

#### Recovery

- Head Grade: 0.05
- Head Grade Unit: mg/L

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Assay result for cobalt in cesium formate solution.

Evidence · table

> 0.05

Context: 1220

### Fact 51

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-50)

Case Lake Cesium Project · potassium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: potassium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Sample: cesium formate solution

#### Recovery

- Head Grade: 90
- Head Grade Unit: mg/L

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Assay result for potassium in cesium formate solution.

Evidence · table

> 90

Context: 1220

### Fact 52

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-51)

Case Lake Cesium Project · lithium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: lithium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Sample: cesium formate solution

#### Recovery

- Head Grade: 2
- Head Grade Unit: mg/L

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Assay result for lithium in cesium formate solution.

Evidence · table

> 2

Context: 1220

### Fact 53

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-52)

Case Lake Cesium Project · phosphorus

#### Identity

- Project: Case Lake Cesium Project
- Commodity: phosphorus
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Sample: cesium formate solution

#### Recovery

- Head Grade: 50
- Head Grade Unit: mg/L

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Assay result for phosphorus in cesium formate solution.

Evidence · table

> 50

Context: 1220

### Fact 54

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-53)

Case Lake Cesium Project · sodium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: sodium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Sample: cesium formate solution

#### Recovery

- Head Grade: 210
- Head Grade Unit: mg/L

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Assay result for sodium in cesium formate solution.

Evidence · table

> 210

Context: 1220

### Fact 55

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-54)

Case Lake Cesium Project · silicon

#### Identity

- Project: Case Lake Cesium Project
- Commodity: silicon
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Sample: cesium formate solution

#### Recovery

- Head Grade: 230
- Head Grade Unit: mg/L

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Assay result for silicon in cesium formate solution.

Evidence · table

> 230

Context: 1220

### Fact 56

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-55)

Case Lake Cesium Project · strontium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: strontium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Sample: cesium formate solution

#### Recovery

- Head Grade: 6.7
- Head Grade Unit: mg/L

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Assay result for strontium in cesium formate solution.

Evidence · table

> 6.7

Context: 1220

### Fact 57

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-56)

Case Lake Cesium Project · thallium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: thallium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Sample: cesium formate solution

#### Recovery

- Head Grade: 0.18
- Head Grade Unit: mg/L

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Assay result for thallium in cesium formate solution.

Evidence · table

> 0.18

Context: 1220

### Fact 58

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-57)

Case Lake Cesium Project · cesium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: cesium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Sample: cesium chloride crystals

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Assay result for cesium in cesium chloride crystals.

Evidence · table

> 78.0

Context: 78.0

### Fact 59

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-58)

Case Lake Cesium Project · barium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: barium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Sample: cesium chloride crystals

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Assay result for barium in cesium chloride crystals.

Evidence · table

> 2.59

Context: 78.0

### Fact 60

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-59)

Case Lake Cesium Project · iron\_ore

#### Identity

- Project: Case Lake Cesium Project
- Commodity: iron\_ore
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Sample: cesium chloride crystals

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Assay result for iron in cesium chloride crystals.

Evidence · table

> 4

Context: 78.0

### Fact 61

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-60)

Case Lake Cesium Project · potassium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: potassium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Sample: cesium chloride crystals

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Assay result for potassium in cesium chloride crystals.

Evidence · table

> 2330

Context: 78.0

### Fact 62

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-61)

Case Lake Cesium Project · magnesium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: magnesium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Sample: cesium chloride crystals

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Assay result for magnesium in cesium chloride crystals.

Evidence · table

> 7

Context: 78.0

### Fact 63

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-62)

Case Lake Cesium Project · sodium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: sodium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Sample: cesium chloride crystals

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Assay result for sodium in cesium chloride crystals.

Evidence · table

> 142

Context: 78.0

### Fact 64

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-63)

Case Lake Cesium Project · rubidium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: rubidium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Sample: cesium chloride crystals

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Assay result for rubidium in cesium chloride crystals.

Evidence · table

> 169

Context: 78.0

### Fact 65

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-64)

Case Lake Cesium Project · silicon

#### Identity

- Project: Case Lake Cesium Project
- Commodity: silicon
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Sample: cesium chloride crystals

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Assay result for silicon in cesium chloride crystals.

Evidence · table

> 10

Context: 78.0

### Fact 66

[Link to this fact](https://atlas-staging.minestarters.com/news/final-cesium-test-work-successfully-completed-at-case-lake--77b802df-9164-4498-950b-8e9b6464e211#fact-metallurgical-facts-65)

Case Lake Cesium Project · strontium

#### Identity

- Project: Case Lake Cesium Project
- Commodity: strontium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Sample: cesium chloride crystals

#### Lab

- Laboratory: SGS Canada

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-29T00:00:00.000Z

Reasoning: Assay result for strontium in cesium chloride crystals.

Evidence · table

> 0.2

Context: 78.0

## 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.