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Big Ridge Gold Corp Announces Outstanding Results from Hope Brook Ore Sorting Study

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Big Ridge Gold Corp (OTCQB: ALVLF) has announced positive results from its ore sorting study at the Hope Brook Gold Project in Newfoundland and Labrador. The study, conducted by Tomra and the Saskatchewan Research Council (SRC), demonstrated successful identification and rejection of unmineralized material, which currently comprises about 25% of the resource estimate mineral envelopes.

Using a TOMRA COM Tertiary XRT System with a density factor of H85, the study processed 69.0 kg of Hope Brook material. The sorting system effectively removed 19.15 kg of waste, representing 27.8% of tested material and 73.4% of identified zero-grade samples. This breakthrough in waste material separation is expected to significantly impact future economic studies of the project by optimizing mill process and tailings management designs.

Big Ridge Gold Corp (OTCQB: ALVLF) ha annunciato risultati positivi dal suo studio di selezione del minerale presso il progetto aurifero Hope Brook a Terranova e Labrador. Lo studio, condotto da Tomra e dal Saskatchewan Research Council (SRC), ha dimostrato l'efficace identificazione e rifiuto del materiale non mineralizzato, che attualmente costituisce circa il 25% delle stime delle risorse mineralizzate.

Utilizzando un sistema TOMRA COM Tertiary XRT con un fattore di densità H85, lo studio ha processato 69,0 kg di materiale di Hope Brook. Il sistema di selezione ha rimosso efficacemente 19,15 kg di scarti, rappresentando il 27,8% del materiale testato e il 73,4% dei campioni identificati a zero grado. Questo progresso nella separazione dei materiali di scarto dovrebbe avere un impatto significativo sugli studi economici futuri del progetto, ottimizzando il processo di lavorazione in miniera e la gestione delle scorie.

Big Ridge Gold Corp (OTCQB: ALVLF) ha anunciado resultados positivos de su estudio de clasificación de mineral en el Proyecto de Oro Hope Brook en Terranova y Labrador. El estudio, realizado por Tomra y el Saskatchewan Research Council (SRC), demostró la identificación y rechazo exitoso de material no mineralizado, que actualmente representa aproximadamente el 25% de los envolventes minerales de la estimación de recursos.

Utilizando un sistema TOMRA COM Tertiary XRT con un factor de densidad H85, el estudio procesó 69,0 kg de material de Hope Brook. El sistema de clasificación eliminó efectivamente 19,15 kg de material de desecho, representando el 27,8% del material probado y el 73,4% de las muestras identificadas como grado cero. Este avance en la separación de materiales de desecho se espera que tenga un impacto significativo en futuros estudios económicos del proyecto, optimizando el proceso de molienda y el diseño de la gestión de relaves.

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TOMRA COM Tertiary XRT 시스í…�(H85 ë°€ë� 계수 사용)ì� 활용í•� Hope Brook 물질 69.0kgì� 처리í•� ê²°ê³¼, 선별 ì‹œìŠ¤í…œì€ 19.15kgì� í기ë¬�ì� 효과ì ìœ¼ë¡� 제거했으ë©�, ì´ëŠ” í…ŒìŠ¤íŠ¸ëœ ë¬¼ì§ˆì� 27.8%와 ì‹ë³„ë� 무등ê¸� 샘플ì� 73.4%ì—� 해당합니ë‹�. ì´ëŸ¬í•� í기ë¬� 분리ì� ëŒíŒŒêµ¬ëŠ” 향후 프로ì íЏì� 경제ì„� 연구ì—� í� ì˜í–¥ì� 미ì³, 제분 공정 ë°� 꼬리ë¬� ê´€ë¦� 설계ë¥� 최ì í™”í•  것으ë¡� 기대ë©ë‹ˆë‹�.

Big Ridge Gold Corp (OTCQB: ALVLF) a annoncé des résultats positifs de son étude de tri du minerai au projet aurifère Hope Brook à Terre-Neuve-et-Labrador. L'étude, réalisée par Tomra et le Saskatchewan Research Council (SRC), a démontré l'identification et le rejet réussis des matériaux non minéralisés, qui représentent actuellement environ 25% des enveloppes minérales de l'estimation des ressources.

En utilisant un système TOMRA COM Tertiary XRT avec un facteur de densité H85, l'étude a traité 69,0 kg de matériau Hope Brook. Le système de tri a efficacement éliminé 19,15 kg de déchets, représentant 27,8% du matériau testé et 73,4% des échantillons identifiés comme de qualité nulle. Cette avancée dans la séparation des déchets devrait avoir un impact significatif sur les futures études économiques du projet en optimisant les processus de l'usine et la gestion des résidus.

Big Ridge Gold Corp (OTCQB: ALVLF) hat positive Ergebnisse seiner Erzsortierstudie beim Hope Brook Gold Projekt in Neufundland und Labrador bekannt gegeben. Die Studie, durchgeführt von Tomra und dem Saskatchewan Research Council (SRC), zeigte eine erfolgreiche Identifikation und Aussortierung von unmineralisiertem Material, das derzeit etwa 25% der Ressourcenschätzung mineralischer Umhüllungen ausmacht.

Mit einem TOMRA COM Tertiary XRT System und einem Dichtefaktor von H85 wurden 69,0 kg Hope Brook Material verarbeitet. Das Sortiersystem entfernte effektiv 19,15 kg Abfall, was 27,8% des getesteten Materials und 73,4% der identifizierten Nullgrad-Proben entspricht. Dieser Durchbruch in der Abfalltrennung wird voraussichtlich die zukünftigen Wirtschaftlichkeitsstudien des Projekts erheblich beeinflussen, indem er die Prozessgestaltung der Mühle und das Tailings-Management optimiert.

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  • Study was conducted on a small sample size of only 76 kilograms
  • Results based on visual estimation rather than actual assaying due to sample size limitations

Toronto, Ontario--(Newsfile Corp. - July 2, 2025) - Big Ridge Gold Corp. (TSXV: BRAU) (OTCQB: ALVLF) ("Big Ridge" or the "Company") is pleased to report results from its initial sensor-based sorting study of ore and waste materials from the Hope Brook Gold Project ("HBGP") located on the southwest coast of Newfoundland and Labrador.

Michael Bandrowski, President & CEO of the Company, commented: "We are extremely pleased with the ore sorting results completed by Tomra in conjunction with the Saskatchewan Research Council ("SRC"). These results demonstrate the ability to identify and reject unmineralized material within the current Hope Brook wireframes. Unmineralized material currently makes up approximately 25% of the resource estimate mineral envelopes. Removing this material ahead of processing will have a significant impact on future economic studies completed on the HBGP."

In the fall of 2024, Big Ridge sent selected core samples from the Hope Brook Deposit to the SRC located in Saskatoon, SK, for two preliminary studies. Core from the HBGP's 198 available drill holes was selected, representing various grade and alteration characteristics of the deposit and associated intervals of 'zero-grade' mafic and intermediate volcanics. Zero-grade material in core accounts for 20-25% of material within the Hope Brook deposit mineral resource wire frame volume based on drill intercepts. SRC completed a characterization and sortability study by a Sensor Based Sorting (SBS) dynamic test on approximately 76 kilograms of material selected from within the deposit.

Characterization and Sorting

Due to the small size of the sample, the results of the dynamic testing are predicated on visual estimation of zero-grade of the resulting mineralized material and waste separated during the tests, rather than assaying. No attempt to separate various mineralized lithologies using SBS was made. To support identification of product and waste through the tests, each piece of zero-grade core was marked on edge with a colored grease pencil which was not reactive to XRT scan. Zero-grade material could be identified and weighed with each step in the sorting process. Of the samples shipped, 30kg (39%) was marked as zero-grade. The remaining mineralized samples were not segregated into zero-grade and mineralized portions, being left as representative of their assayed core lengths.

SRC used a TOMRA COM Tertiary XRT System for the characterization and sortability studies and the dynamic test. XRT characterization scanning was successful in identifying zero-grade material supplied from mafic dyke intervals in the deposit's mineralized wire frame. XRT is a tool to assess rock density across an individual sample's surface area. After scans at various density sensitivities, a density factor of H85 was selected as best suited to detect zero-grade material. Density can vary across a single sample's volume with zones of lower and higher density appearing throughout each rock particle scanned. The characterization study showed that using a density factor of H85, low density volumes within zero-grade material accounted for less than 30% of each sample versus a much greater percentage of low density in each sample of mineralized material (See Figure 1).

Figure 1 - XRT Scan Classified Images at XRT "factor" H85 showing distribution of high (blue) and low (red) density areas. Samples 26 to 38 are zero-grade samples.

To view an enhanced version of this graphic, please visit:

After characterization, SRC conducted the dynamic test using the TOMRA COM Tertiary XRT System, processing all remaining material from the 38 samples (69.0 kg) of Hope Brook material provided. The H85 density factor and was applied and a cascading sort using successive 40%, 30% and 20% low density representation cut-offs were used.

Table 1: Hand sorted sample weights from cascade XRT sorting

Cascade StepProduct (kg)Waste (kg)Fines (kg)
40% Low39.556.951.1
30% Low0.803.550.05
20% Low0.503.000.1
Waste0.6012.60
Sub-total41.4526.11.25
Total:*42.726.1
% of Sample62.1%37.9%

 

*Fines calculated with Product to emulate sort process ahead of milling

The sorting steps show that selecting a 40% low density threshold, the XRT system removed 19.15 kg (30%-, 20%-low and waste in Table 1) of waste, representing 27.8% of tested material and 73.4% of the identified zero-grade samples.

Visual confirmation of the very high percentage of zero-grade material in ejected waste from the dynamic test suggests that Sensor Based Sorting will be effective in significantly reducing waste material identified as zero-grade ahead of processing at Hope Brook. Post-ore mafic and intermediate rocks which account for 20-25% of the mineral resource envelope can be effectively diverted allowing for optimized mill process and tailings management designs.

This preliminary test supports inclusion of SBS in bulk scale metallurgical and process testing to be completed with future HBGP feasibility studies. Further review of the sorted components retained from this test may help inform optimization of future work.

Qualified Person

William McGuinty, P. Geo., a consultant to Big Ridge, and a Qualified Person within the meaning of NI 43-101, Standards of Disclosure for Mineral Projects, has reviewed and approved the technical information contained in this news release.

About Hope Brook

The Hope Brook Gold Project is an advanced stage, high-grade gold project that produced 752,162 ounces of gold from 1987 - 1997. Initial production consisted of an open pit before moving to underground mining. Hope Brook operated using both heap leach (1987 -1990) and conventional cyanidation milling methods (1989-1997) with a later inclusion of flotation concentration to recover copper (1991). Government records indicate that gold recoveries from milling ranged between a low of 78.8% in 1987 and a high of 85.9% in 1989. Government and company annual reports indicate that gold recoveries ranged between a low of 82.1% in 1994 and a high of 89.83% in 1996 following a change of ownership. Copper flotation produced a concentrate at approximately 22% Cu and 34.3 g/t Au for shipment in 1992.

Hope Brook hosts an Indicated gold resource totalling 16,190,000 tonnes grading 2.32 grams per tonne gold for 1.2 million ounces and Inferred resources totalling 2,215,000 tonnes grading 3.25 grams per tonne gold for 231,000 ounces based on a 0.4 and 2.0 gram per tonne cut-off grades for open pit and underground resources respectively using a long-term gold price of US$1,750.

The Hope Brook gold deposit is a high-sulfidation epithermal gold deposit hosted in the Proterozoic aged Whittle Hill Sandstone and is intruded by a Late Proterozoic quartz-feldspar porphyry sill-dike complex of the Roti Intrusive Suite. The deposit is located adjacent to and within an extensive advanced argillic alteration envelope which includes pyrophyllite, kaolinite, andalusite, and alunite. The principal gold mineralization occurs in a buff-colored massive, vuggy silicic alteration with an associated, less developed grey silicic alteration with pyrite, chalcopyrite and lesser bornite accessory minerals. Gold mineralization is also found with pyrite in units of advanced argillic alteration adjacent to or near silicic alteration horizons. The altered and mineralized zone is cut by mafic dykes whose contacts are often mineralized. All the altered and mineralized sequences and the intruded dykes have been folded.

Hope Brook is located 85 kilometers east of Port aux Basques, Newfoundland. The project has well maintained infrastructure on site, including an operational 28-person camp, an 1,100-meter airstrip, ice-free docking facility and importantly, connection to the provincial electrical power grid via an on-site substation.

About Big Ridge Gold Corp.

Big Ridge Gold Corp. is an exploration and development company managed by a disciplined and experienced team of officers and directors. The Company is committed to the development of advanced stage mining projects using industry best practices combined with strong social license from our local communities. Big Ridge owns an 80% interest in its flagship Hope Brook Gold Project, located in Newfoundland and Labrador. Big Ridge also owns 100% in the highly prospective Oxford Gold Project located in Manitoba and the Destiny Gold Project in Quebec.

Acknowledgement

Big Ridge acknowledges and appreciates the Newfoundland and Labrador Ministry of Natural Resources' financial support of the Company's 2023 exploration programs through the Junior Exploration Assistance (JEA) Program.

For more details regarding the Company's projects, please visit our website at

ON BEHALF OF THE BOARD,

Mike Bandrowski,
President & CEO

Mike Bandrowski,
President & CEO
BIG RIDGE GOLD CORP.
18 King St. East, Suite 1400
Toronto, ON, M5C 1C4
Tel: 416-540-5480
Email: [email protected]

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

Cautionary Note Regarding Forward-Looking Statements

This news release includes certain "forward-looking information" and "forward-looking statements" (collectively "forward-looking statements") within the meaning of applicable Canadian securities legislation. These forward-looking statements are made as of the date of this news release. Forward-looking statements are frequently, but not always, identified by words such as "expects", "anticipates", "believes", "plans", "projects", "intends", "estimates", "envisages", "potential", "possible", "strategy", "goals", "objectives", or variations thereof or stating that certain actions, events or results "may", "could", "would", "might" or "will" be taken, occur or be achieved, or the negative of any of these terms and similar expressions.

Forward-looking statements in this news release relate to future events or future performance and reflect current estimates, predictions, expectations, or beliefs regarding future events, and include, without limitation, statements with respect to Big Ridge's intentions with respect to Caprock's shares. All forward-looking statements are based on Big Ridge's and its employees' current beliefs as well as various assumptions made by them and information currently available to them. There can be no assurance that such statements will prove to be accurate, and actual results and future events could differ materially from those anticipated in such statements. Forward-looking statements reflect the beliefs, opinions, and projections on the date the statements are made and are based upon a number of assumptions and estimates that, while considered reasonable by the respective parties, are inherently subject to significant business, economic, competitive, political, and social uncertainties and contingencies. Many factors, both known and unknown, could cause actual results, performance, or achievements to be materially different from the results, performance or achievements that are or may be expressed or implied by such forward-looking statements and the parties have made assumptions and estimates based on or related to many of these factors. When relying on our forward-looking statements to make decisions with respect to Big Ridge, investors and others should carefully consider the foregoing factors and other uncertainties and potential events. Big Ridge does not undertake to update any forward-looking statement, whether written or oral, that may be made from time to time by the Company or on our behalf, except as required by law.

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FAQ

What were the key findings of Big Ridge Gold's (ALVLF) Hope Brook ore sorting study?

The study demonstrated successful separation of unmineralized material, removing 27.8% of waste material and 73.4% of zero-grade samples using XRT sorting technology.

How much unmineralized material is currently in the Hope Brook Gold Project resource?

Unmineralized material currently makes up approximately 25% of the resource estimate mineral envelopes at the Hope Brook Gold Project.

What technology did Big Ridge Gold use for the ore sorting study?

The study used a TOMRA COM Tertiary XRT System with a density factor of H85, conducted in conjunction with the Saskatchewan Research Council (SRC).

How will the ore sorting results impact Big Ridge Gold's operations?

The results are expected to significantly impact future economic studies by enabling optimization of mill processing and tailings management designs, potentially improving operational efficiency.

What are the limitations of Big Ridge Gold's ore sorting study?

The study was conducted on a relatively small sample of 76 kilograms, and results were based on visual estimation rather than assaying due to the sample size limitations.
Big Ridge Gold Corp.

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