# Liberty Gold Validates Predicted Operating Gold Leach Recoveries Through Bulk Column Tests at Run-of-Mine Sizing Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/liberty-gold-validates-predicted-operating-gold-leach-recoveries-through-bulk-co--a9895d55-b77f-4a0e-8169-5778abb5e76b Original source: https://orestocks.com/company/LGD.TO/press-releases/5580856445518065 Publisher: orestocks Original announcement: 2026-09-17T10:00:00.000Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - Company: Liberty Gold Corp. - Ticker: LGD.TO - Exchange: Unavailable - Region: Idaho - Primary commodity: Gold - Secondary commodities: Silver - Document categories: Metallurgy - Extracted: 2026-09-17 10:11:19 UTC Narrative sentiment: 0.80 · Bullish ## Minestarters Atlas summary Liberty Gold has successfully validated its gold leach recovery models for run-of-mine \(ROM\) sized material through bulk column testing at the Black Pine Oxide Gold Project. The results confirm that gold extraction is relatively insensitive to particle size, supporting a low-cost heap leach strategy without the need for crushing. Reasoning: The bulk column tests successfully validate the company's ROM heap leach recovery assumptions, significantly de-risking the project's processing strategy and supporting the recent Feasibility Study. - Positive factor: Validation of ROM heap leach recovery models - Positive factor: Rapid leach kinetics \(90% in 36 days\) - Positive factor: High extraction \(95%\) in Rangefront Ppos sample - Positive factor: Low sensitivity to particle size \(crushing not required\) - Positive factor: Favorable permeability results - 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 project utilizes a heap leach processing route. Evidence · text > ROM heap leach operation **High Recovery** Polarity: positive Definition: Recovery at or above the exceptional band for the commodity and processing route. Why it applies: Bulk column results showed 95% extraction for the Rangefront Ppos sample and an average of 72.4% for bulk columns, with many reaching 90% in 36 days. Evidence · text > The Rangefront Ppos sample had the highest extraction tested at 95% **Free Milling** Polarity: positive Definition: Simple, clean ore amenable to standard processing without oxidation. Why it applies: The ore is described as oxide ore with rapid leach kinetics and favorable characteristics. Evidence · text > Black Pine is emerging as a classic example of oxide ores where ROM gold extractions are rapid **Heap Leach Route** Polarity: neutral Definition: Processing via heap leach — lower CAPEX and OPEX, lower recovery expected. Why it applies: the document describes a heap\_leach route \("heap leach"\) **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) ### column leach [Link to this fact](https://atlas-extractions.minestarters.com/news/liberty-gold-validates-predicted-operating-gold-leach-recoveries-through-bulk-co--a9895d55-b77f-4a0e-8169-5778abb5e76b#fact-metallurgical-facts-0) Black Pine · gold #### Identity - Project: Black Pine - Commodity: gold - Region: usa\_id - Reported Region: Idaho - Ticker: LGD.TO #### Test Work - Program Status: detailed - Test Type: column leach - Sample: Rangefront Ppos sample #### Recovery - Recovery: 95 % - Head Grade: 0.43 - Head Grade Unit: g/t #### Lab - Laboratory: KCA - Consultant: Gary Simmons #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-17T00:00:00.000Z Reasoning: Exceptionally high recovery for the given head grade, providing significant value upside. - 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 \(75%\) ### column leach [Link to this fact](https://atlas-extractions.minestarters.com/news/liberty-gold-validates-predicted-operating-gold-leach-recoveries-through-bulk-co--a9895d55-b77f-4a0e-8169-5778abb5e76b#fact-metallurgical-facts-1) Black Pine · gold #### Identity - Project: Black Pine - Commodity: gold - Region: usa\_id - Reported Region: Idaho - Ticker: LGD.TO #### Test Work - Program Status: detailed - Test Type: column leach - Sample: I-pit Pold sample #### Recovery - Recovery: 51.9 % #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-17T00:00:00.000Z Reasoning: Result was expected and consistent with existing models for this specific rock unit. - Positive factor: Aligned with modeled recoveries - Negative factor: Lower gold extraction expected for this unit 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 ### column leach [Link to this fact](https://atlas-extractions.minestarters.com/news/liberty-gold-validates-predicted-operating-gold-leach-recoveries-through-bulk-co--a9895d55-b77f-4a0e-8169-5778abb5e76b#fact-metallurgical-facts-2) Black Pine · gold #### Identity - Project: Black Pine - Commodity: gold - Region: usa\_id - Reported Region: Idaho - Ticker: LGD.TO #### Test Work - Program Status: detailed - Test Type: column leach - Sample: Average weighted bulk columns #### Recovery - Recovery: 72.4 % #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-17T00:00:00.000Z Reasoning: Validates the feasibility study models for bulk material. - Positive factor: In line with modeled recoveries in the recent FS 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 ### column leach [Link to this fact](https://atlas-extractions.minestarters.com/news/liberty-gold-validates-predicted-operating-gold-leach-recoveries-through-bulk-co--a9895d55-b77f-4a0e-8169-5778abb5e76b#fact-metallurgical-facts-3) Black Pine · silver #### Identity - Project: Black Pine - Commodity: silver - Region: usa\_id - Reported Region: Idaho - Ticker: LGD.TO #### Test Work - Program Status: detailed - Test Type: column leach - Sample: Bulk column leach tests #### Recovery - Recovery: 21 % #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-17T00:00:00.000Z Reasoning: Provides a basis for future silver production modeling. - Positive factor: Above previous variability composite averages Evidence · text > Bulk column leach tests recorded silver \(“Ag”\) extractions up to 39%, with a 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.