# Liberty Gold Validates Predicted Operating Gold Leach Recoveries Through Bulk Column Tests at Run-of-Mine Sizing

Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/liberty-gold-validates-predicted-operating-gold-leach-recoveries-through-bulk-co--42ca6d60-1a44-4f00-a12b-cd819ac109cc

Original source: https://www.globenewswire.com/news-release/2026/09/17/3363784/0/en/liberty-gold-validates-predicted-operating-gold-leach-recoveries-through-bulk-column-tests-at-run-of-mine-sizing.html

Publisher: globenewswire

Original announcement: 2026-09-17T10:00:00.000Z

Analysis by Minestarters Atlas

Atlas analysis published: 2026-09-17T10:32:46.743Z

Atlas analysis updated: 2026-09-17T10:32:46.743Z

- Company: Liberty Gold Corp.

- Ticker: LGD

- Exchange: Unavailable

- Region: Idaho

- Primary commodity: Gold

- Secondary commodities: Silver

- Document categories: Metallurgy

- Extracted: 2026-09-17 10:32:47 UTC

Narrative sentiment: 0.80 · Bullish

## Minestarters Atlas summary

Liberty Gold has completed Phase 6 metallurgical bulk column tests at the Black Pine Oxide Gold Project, confirming that gold leach recoveries for run-of-mine \(ROM\) sized material align with previous feasibility study models. The results demonstrate rapid leach kinetics and favorable reagent consumption, supporting a low-cost heap leach processing strategy.

Reasoning: Bulk column tests successfully validated the gold recovery models for run-of-mine sizing, significantly de-risking the heap leach processing route for the Black Pine project.

- Positive factor: Validated ROM heap leach recoveries

- Positive factor: Rapid leach kinetics

- Positive factor: Low reagent consumption

- Positive factor: Favorable permeability

- Negative factor: One sample underperformed due to high clay content

Facts used in scoring: 4

## Classification and evidence

**Mill Route**

Polarity: neutral

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

Why it applies: The testing was conducted using bulk column leaching to simulate a heap leach operation.

Evidence · text

> using bulk column leaching

**Heap Leach Route**

Polarity: neutral

Definition: Processing via heap leach — lower CAPEX and OPEX, lower recovery expected.

Why it applies: The program specifically validates recoveries for a ROM heap leach processing route.

Evidence · text

> support a ROM heap leach processing route

**Multi-Domain Tested**

Polarity: positive

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

Why it applies: 4 distinct composites were tested

## Extracted facts

Stored fact records: 4. Some facts used in scoring do not have a stored record.

## Metallurgical Results (4)

### bulk column leach

[Link to this fact](https://atlas-staging.minestarters.com/news/liberty-gold-validates-predicted-operating-gold-leach-recoveries-through-bulk-co--42ca6d60-1a44-4f00-a12b-cd819ac109cc#fact-metallurgical-facts-0)

Black Pine · gold

#### Identity

- Project: Black Pine
- Commodity: gold
- Region: usa\_id
- Reported Region: Idaho
- Ticker: LGD

#### Test Work

- Program Status: detailed
- Test Type: bulk column leach
- Processing Route: ROM heap leach
- Sample: Rangefront Ppos sample

#### Recovery

- Recovery: 95 %
- Head Grade: 0.43
- Head Grade Unit: g/t

#### Lab

- Laboratory: Kappes, Cassiday & Associates \(KCA\)
- Consultant: Gary Simmons

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-09-17T00:00:00.000Z

Reasoning: High recovery \(95%\) at a low head grade \(0.43 g/t\) significantly exceeds modeled expectations for this unit.

- Positive factor: Outperformed modeled recoveries by over 13%

Evidence · text

> The Rangefront Ppos sample had the highest extraction tested at 95% for a 0.43 g/t gold head grade.

#### Tags used in scoring

**Heap Leach Route**

Polarity: neutral

Definition: Processing via heap leach — lower CAPEX and OPEX, lower recovery expected.

Why it applies: processing\_route matches the heap\_leach signal

**High Recovery**

Polarity: positive

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

Why it applies: 95% is at or above the exceptional band \(75%\)

### bulk column leach

[Link to this fact](https://atlas-staging.minestarters.com/news/liberty-gold-validates-predicted-operating-gold-leach-recoveries-through-bulk-co--42ca6d60-1a44-4f00-a12b-cd819ac109cc#fact-metallurgical-facts-1)

Black Pine · gold

#### Identity

- Project: Black Pine
- Commodity: gold
- Region: usa\_id
- Reported Region: Idaho
- Ticker: LGD

#### Test Work

- Program Status: detailed
- Test Type: bulk column leach
- Processing Route: ROM heap leach
- Sample: I-pit Pold sample

#### Recovery

- Recovery: 51.9 %

#### Lab

- Laboratory: Kappes, Cassiday & Associates \(KCA\)
- Consultant: Gary Simmons

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-09-17T00:00:00.000Z

Reasoning: Lower recovery was expected for this specific rock unit and matches previous models.

- Positive factor: Aligned with modeled recoveries

Evidence · text

> The I-pit Pold sample extraction at 51.9% was an expected result

#### Tags used in scoring

**Heap Leach Route**

Polarity: neutral

Definition: Processing via heap leach — lower CAPEX and OPEX, lower recovery expected.

Why it applies: processing\_route matches the heap\_leach signal

### bulk column leach

[Link to this fact](https://atlas-staging.minestarters.com/news/liberty-gold-validates-predicted-operating-gold-leach-recoveries-through-bulk-co--42ca6d60-1a44-4f00-a12b-cd819ac109cc#fact-metallurgical-facts-2)

Black Pine · gold

#### Identity

- Project: Black Pine
- Commodity: gold
- Region: usa\_id
- Reported Region: Idaho
- Ticker: LGD

#### Test Work

- Program Status: detailed
- Test Type: bulk column leach
- Processing Route: ROM heap leach
- Sample: Average weighted gold extraction for bulk columns

#### Recovery

- Recovery: 72.4 %

#### Lab

- Laboratory: Kappes, Cassiday & Associates \(KCA\)
- Consultant: Gary Simmons

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-09-17T00:00:00.000Z

Reasoning: The average recovery validates the feasibility study models for the project.

- Positive factor: In line with modeled recoveries

Evidence · text

> The average weighted gold extraction for the bulk columns was 72.4%

#### Tags used in scoring

**Heap Leach Route**

Polarity: neutral

Definition: Processing via heap leach — lower CAPEX and OPEX, lower recovery expected.

Why it applies: processing\_route matches the heap\_leach signal

### bulk column leach

[Link to this fact](https://atlas-staging.minestarters.com/news/liberty-gold-validates-predicted-operating-gold-leach-recoveries-through-bulk-co--42ca6d60-1a44-4f00-a12b-cd819ac109cc#fact-metallurgical-facts-3)

Black Pine · silver

#### Identity

- Project: Black Pine
- Commodity: silver
- Region: usa\_id
- Reported Region: Idaho
- Ticker: LGD

#### Test Work

- Program Status: detailed
- Test Type: bulk column leach
- Processing Route: ROM heap leach
- Sample: Bulk column leach tests \(weighted average\)

#### Recovery

- Recovery: 21 %

#### Lab

- Laboratory: Kappes, Cassiday & Associates \(KCA\)
- Consultant: Gary Simmons

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-09-17T00:00:00.000Z

Reasoning: Silver recovery is being used to update future models; current results are better than previous averages.

- Positive factor: Above previous variability composite averages

Evidence · text

> weighted average Ag recovery of 21%

#### Tags used in scoring

**Heap Leach Route**

Polarity: neutral

Definition: Processing via heap leach — lower CAPEX and OPEX, lower recovery expected.

Why it applies: processing\_route matches the heap\_leach signal

**Low Recovery**

Polarity: negative

Definition: Recovery below the weak band for the commodity and processing route.

Why it applies: 21% is below the weak band \(75%\)

## 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.