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STLLR Continues to Intersect Consistent Grades at the Hollinger Tailings Project

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STLLR Gold (OTCQX: STLRF) has reported encouraging results from its characterization program at the Hollinger Tailings Project in Timmins, Ontario. The program has completed 423 sonic drill holes totaling 11,223 meters, with results now published for 81 holes. Key findings show consistent gold grades throughout most holes, with notable intersections including 0.50 g/t Au over 24.40m and 0.51 g/t Au over 19.80m. The Hollinger site, which operated from 1910 to 1968, contains an estimated 50-60 million tonnes of tailings from the historic Hollinger Mine, which produced 19 million ounces of gold at 9.9 g/t. Recent Ontario Mining Act amendments facilitate legacy tailings reprocessing, positioning the project for potential mineral resource estimation and economic evaluation.

STLLR Gold (OTCQX: STLRF) ha riportato risultati incoraggianti dal suo programma di caratterizzazione presso il Progetto Hollinger Tailings a Timmins, Ontario. Il programma ha completato 423 fori di perforazione sonica per un totale di 11.223 metri, con risultati ora pubblicati per 81 fori. I risultati chiave mostrano grade di oro costanti nella maggior parte dei fori, con intersezioni significative tra cui 0,50 g/t Au su 24,40 m e 0,51 g/t Au su 19,80 m. Il sito Hollinger, operativo dal 1910 al 1968, contiene una stima di 50-60 milioni di tonnellate di residui minerari provenienti dalla storica miniera Hollinger, che ha prodotto 19 milioni di once d'oro a 9,9 g/t. Le recenti modifiche alla Mining Act dell'Ontario facilitano il reprocessing dei residui minerari storici, posizionando il progetto per una potenziale stima delle risorse minerarie e una valutazione economica.

STLLR Gold (OTCQX: STLRF) ha reportado resultados alentadores de su programa de caracterización en el Proyecto Hollinger Tailings en Timmins, Ontario. El programa ha completado 423 perforaciones sónicas con un total de 11,223 metros, con resultados publicados para 81 perforaciones. Los hallazgos clave muestran leyes de oro consistentes a lo largo de la mayoría de los pozos, con intersecciones notables que incluyen 0.50 g/t Au sobre 24.40 m y 0.51 g/t Au sobre 19.80 m. El sitio Hollinger, que operó desde 1910 hasta 1968, contiene un estimado de 50-60 millones de toneladas de relaves de la histórica mina Hollinger, que produjo 19 millones de onzas de oro a 9.9 g/t. Las recientes enmiendas a la Ley de Minería de Ontario facilitan el reprocesamiento de relaves antiguos, posicionando el proyecto para una posible estimación de recursos minerales y evaluación económica.

STLLR Gold(OTCQX: STLRF)는 온타리오주 팀민스에 위치한 홀린저 테일링 프로젝트의 특성화 프로그램에서 고무적인 결과를 보고했습니다. 해당 프로그램은 총 11,223미터에 달하는 423개의 소닉 시추공을 완료했으며, 현재 81개 시추공의 결과가 공개되었습니다. 주요 발견 사항으로는 대부분의 시추공에서 일관된 금 함량을 보였으며, 24.40m 구간에서 0.50 g/t Au, 19.80m 구간에서 0.51 g/t Au의 주목할 만한 교차 구간이 포함됩니다. 1910년부터 1968년까지 운영된 홀린저 광산 부지에는 역사적인 홀린저 광산에서 생산된 금 1,900만 온스에 해당하는 9.9 g/t의 금이 포함된 약 5,000만~6,000만 톤의 테일링이 매장되어 있습니다. 최근 온타리오 광산법 개정으로 인해 기존 테일링 재처리가 용이해져, 이 프로젝트는 잠재적인 광물 자원 평가 및 경제성 평가를 위한 기반을 마련하게 되었습니다.

STLLR Gold (OTCQX : STLRF) a annoncé des résultats encourageants issus de son programme de caractérisation au projet Hollinger Tailings à Timmins, Ontario. Le programme a réalisé 423 forages soniques totalisant 11 223 mètres, avec des résultats publiés pour 81 forages. Les principales conclusions montrent des teneurs en or constantes dans la plupart des forages, avec des intersections notables telles que 0,50 g/t Au sur 24,40 m et 0,51 g/t Au sur 19,80 m. Le site de Hollinger, exploité de 1910 à 1968, contient environ 50 à 60 millions de tonnes de résidus issus de l'ancienne mine Hollinger, qui a produit 19 millions d'onces d'or à 9,9 g/t. Les récentes modifications de la Loi sur les mines de l'Ontario facilitent le retraitement des résidus historiques, positionnant le projet pour une estimation potentielle des ressources minérales et une évaluation économique.

STLLR Gold (OTCQX: STLRF) hat ermutigende Ergebnisse aus seinem Charakterisierungsprogramm beim Hollinger Tailings Project in Timmins, Ontario, gemeldet. Das Programm hat 423 Sonic-Bohrlöcher mit insgesamt 11.223 Metern abgeschlossen, wobei Ergebnisse für 81 Löcher veröffentlicht wurden. Wichtige Erkenntnisse zeigen konstante Goldgehalte in den meisten Bohrlöchern, mit bemerkenswerten Abschnitten von 0,50 g/t Au über 24,40 m und 0,51 g/t Au über 19,80 m. Die Hollinger-Stätte, die von 1910 bis 1968 betrieben wurde, enthält schätzungsweise 50-60 Millionen Tonnen Tailings der historischen Hollinger-Mine, die 19 Millionen Unzen Gold mit 9,9 g/t förderte. Kürzliche Änderungen des Ontario Mining Act erleichtern die Wiederaufbereitung von Alt-Tailings und positionieren das Projekt für eine potenzielle Mineralressourcenschätzung und wirtschaftliche Bewertung.

Positive
  • Consistent gold grades found throughout drill holes, supporting mining potential
  • Large resource potential with 50-60 million tonnes of tailings
  • Favorable regulatory environment with streamlined permitting for tailings reprocessing
  • Low capital requirements compared to traditional mining projects
Negative
  • Relatively low gold grades (around 0.50 g/t Au) compared to primary mining operations
  • Only 19% of drill holes (81 of 423) reported so far
  • Economic viability still subject to further technical evaluation

Toronto, Ontario--(Newsfile Corp. - May 1, 2025) - STLLR Gold Inc. (TSX: STLR) (OTCQX: STLRF) (FSE: O9D) ("STLLR" or the "Company") is pleased to report additional encouraging results from its characterization program at the Hollinger Tailings Project ("Hollinger") located in the Timmins Mining Camp, Ontario, Canada.

Key takeaways from additional results at the Hollinger characterization program:

  • Consistent grade profiles: Results from the latest batch continue to demonstrate uniform grade distribution across drilled intervals, with most holes returning mineralized values throughout their full length.

  • Gold grades warrant further studies: Most holes returned grades that justify advancing toward a potential mineral resource estimate and further economic evaluation.

  • Drilling complete; 20% of holes reported: With this latest release, results have now been published for 81 of the 423 completed sonic drill holes. The holes reported to date are primarily located in the north-central portion of Hollinger. The characterization program is now complete and assay results for the remaining holes are pending.

Table 1: Hollinger Characterization Program Assay Highlights (For more information see Tables 2 & 3 and Figures 1 to 4):

ZoneHole IDAssay Result
HollingerHTF25-0610.50 grams per tonne gold ("g/t Au") over 24.40 metres ("m") (including 0.53 g/t Au over 2.15 m & 0.60 g/t Au over 13.00 m)
HollingerHTF25-0630.50 g/t Au over 21.35 m (including 0.55 g/t Au over 11.25 m)
HollingerHTF25-0650.50 g/t Au over 19.80 m (including 0.51 over 3.50 m & 0.54 m 10.05 m)
HollingerHTF25-0830.51 g/t Au over 19.80 m (including 0.53 g/t Au over 15.25 m)

 

Keyvan Salehi, P.Eng., MBA, President, CEO, and Director of STLLR, commented: "We continue to see consistent gold grades throughout the full length of most holes at Hollinger, supporting the potential for mining and milling, subject to further technical evaluation. This latest batch builds on earlier results, extending the zone of mineralized continuity to approximately 500 metres."

"We've released 81 of the 423 holes at Hollinger. The characterization program is now complete, and we will provide further updates as we receive the remaining assay results in the coming weeks."

Hollinger Characterization Program

Located in southeast Timmins, Ontario, the Hollinger Tailings Project holds tailings from the historic Hollinger Mine, once the world's largest gold mine. Operating from 1910 to 1968, it produced 19 million ounces of gold at an average grade of 9.9 grams per tonne.1 The site contains an estimated 50-60 million tonnes of tailings. Recent amendments to Ontario's Mining Act2 streamline permitting, enabling reprocessing of legacy tailings while promoting environmental remediation. With low capital requirements and favorable gold prices, the Company believes that Hollinger offers significant upside potential.

In February 2025, STLLR launched a characterization program to assess the project's value, establish a path towards a mineral resource estimate, and gather information for a recovery and remediation plan. The Company has completed 11,223 m from 423 holes using sonic drills, with the holes spaced by 50 m in a grid pattern. The results continue to demonstrate consistent gold grades across multiple holes, reinforcing the case for advancing toward a mineral resource estimate and preliminary economic analysis at today's strong gold prices. Please review Figures 1 to 4 and Tables 1 to 3 for further context.

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Figure 1: Hollinger Characterization Program - Drill Location Map

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Figure 2: Hollinger Characterization Program - Drill Location Map Zoomed In

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Figure 3: Hollinger Characterization Program - Section "N-S"

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Figure 4: Hollinger Characterization Program - Section "E-W"

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Table 2: Hollinger Characterization Intercepts*

TargetHole IDFrom
(m)
To
(m)
Interval
(m)
Grade
(g/t Au)
Metal Factor
(g/t Au x m)
HollingerHTF25-0610.0024.4024.400.5012.25
Hollingerincluding0.002.152.150.531.15
Hollingerincluding9.1522.1513.000.607.77
HollingerHTF25-0630.0021.3521.350.5010.74
Hollingerincluding9.1520.4011.250.556.17
HollingerHTF25-0650.0019.8019.800.509.92
Hollingerincluding0.003.503.500.511.80
Hollingerincluding9.7519.8010.050.545.47
HollingerHTF25-0670.0023.4023.400.4410.39
Hollingerincluding16.7523.406.650.573.77
HollingerHTF25-0690.0024.2124.210.4511.00
Hollingerincluding0.001.801.800.641.14
HollingerHTF25-0712.4026.7024.300.4310.55
Hollingerincluding21.3525.904.550.582.63
HollingerHTF25-0730.0026.7026.700.359.23
HollingerHTF25-0828.6023.6515.050.456.70
HollingerHTF25-0830.0019.8019.800.5110.15
Hollingerincluding3.0518.3015.250.538.15
HollingerHTF25-0848.3524.4016.050.406.43
Hollingerincluding19.0021.352.350.711.66
HollingerHTF25-0850.0015.2515.250.487.37
Hollingerincluding0.003.053.050.561.70
Hollingerincluding5.2015.2510.050.515.08
HollingerHTF25-0868.5525.9017.350.345.94
Hollingerincluding16.0018.302.300.501.15
HollingerHTF25-0873.7025.9022.200.4610.26
Hollingerincluding13.0025.9012.900.557.05
HollingerHTF25-0889.6128.7019.090.305.69
HollingerHTF25-0897.3029.7022.400.429.50
Hollingerincluding18.3024.406.100.543.28
HollingerHTF25-0907.0523.0015.950.457.19
Hollingerincluding17.5022.304.800.572.73
HollingerHTF25-0917.1525.9018.750.407.59
Hollingerincluding17.5523.606.050.503.03
HollingerHTF25-0936.1022.8516.750.386.35
Hollingerincluding18.3019.801.500.540.82
HollingerHTF25-0949.7523.9514.200.365.09
HollingerHTF25-0957.2025.1017.900.437.75
Hollingerincluding18.3024.406.100.523.15
HollingerHTF25-0969.0026.4017.400.345.87
HollingerHTF25-0978.0525.9017.850.407.22
Hollingerincluding18.3021.353.050.682.07
HollingerHTF25-0982.7022.0019.300.275.12
HollingerHTF25-1018.7024.4015.700.396.06
HollingerHTF25-1027.1025.7018.600.315.76
HollingerHTF25-1037.2010.653.450.431.49
Hollingerand13.7024.4010.700.343.67
HollingerHTF25-1060.6018.3017.700.264.62
HollingerHTF25-1078.7526.5017.750.356.28
Hollingerincluding19.8021.351.550.771.19
HollingerHTF25-1100.7518.6517.900.264.57
HollingerHTF25-1146.8525.9019.050.275.17
HollingerHTF25-1165.4020.1014.700.304.38
HollingerHTF25-1185.5516.0010.450.434.45

 

*Note: Included intercepts are calculated using a 0.5 g/t Au cut-off and a maximum of 2 m internal dilutions

Table 3: Hollinger Characterization Hole Details

ZoneHole IDEastingNorthingElevationAzInclinationEnd of Hole Depth (m)
Hollinger HTF25-061476504.7675367017.903318.540-9027.45
Hollinger HTF25-063476558.2535367018.055318.980-9024.40
Hollinger HTF25-065476607.3015367018.648319.360-9019.80
Hollinger HTF25-067476664.3225367023.796321.450-9025.90
Hollinger HTF25-069476661.8075366966.128321.300-9027.20
Hollinger HTF25-071476654.8375366917.188321.610-9027.45
Hollinger HTF25-073476656.2265366872.755320.520-9030.50
Hollinger HTF25-082476856.6375367017.421327.000-9025.90
Hollinger HTF25-083476710.1925367023.616321.620-9019.80
Hollinger HTF25-084476857.9125366967.903327.330-9030.50
Hollinger HTF25-085476756.9505367016.466321.390-9015.25
Hollinger HTF25-086476860.0635366920.659327.020-9028.95
Hollinger HTF25-087476713.1455366965.873324.450-9030.50
Hollinger HTF25-088476854.7865366869.039327.400-9033.50
Hollinger HTF25-089476714.9885366922.055325.990-9030.50
Hollinger HTF25-090476902.5485367018.153327.590-9027.45
Hollinger HTF25-091476719.3275366867.138327.000-9025.90
Hollinger HTF25-093476759.2745366962.227325.740-9022.85
Hollinger HTF25-094476906.5375366918.253327.460-9025.90
Hollinger HTF25-095476758.1355366917.276325.930-9028.95
Hollinger HTF25-096476911.0245366877.513325.800-9027.45
Hollinger HTF25-097476762.2645366870.719325.950-9025.90
Hollinger HTF25-098476908.7665366821.417320.220-9025.90
Hollinger HTF25-101476814.6885367007.116326.970-9027.45
Hollinger HTF25-102476957.1745366874.850324.870-9028.95
Hollinger HTF25-103476808.1425366968.937325.960-9025.90
Hollinger HTF25-106477006.7275366872.153318.410-9021.35
Hollinger HTF25-107476806.8905366868.039327.070-9030.50
Hollinger HTF25-110477007.8895366820.191318.100-9022.85
Hollinger HTF25-114477009.6025366920.621324.610-9028.95
Hollinger HTF25-116476961.4885366968.500324.630-9024.40
Hollinger HTF25-118476961.3685367015.555324.850-9030.50

 

Quality Control Procedures
Tailings core is collected by four-inch diameter continuous sonic coring. Tailings samples are cut, with half sent to ALS Laboratories Inc. (ALS) for drying to a maximum temperature of 60-degree Celsius. The samples are then sieved through a -180 µm screen (Tyler 80 mesh) to a 1.00 kg split of homogenize minus fraction material. A 50 g charge is Fire Assayed and analyzed using an AAS finish for Gold. Samples above 10.00 g/t Au are analyzed by Fire Assay with a gravimetric finish. ALS is an ISO 17025 accredited laboratory. STLLR inserts independent certified reference material and blanks with the samples and assays routine pulp repeats, as well as completing routine third-party check assays at Bureau Veritas Commodities Canada Ltd.

Qualified Person
John McBride, MSc., P.Geo., Vice President of Exploration for STLLR, who is the "Qualified Person" as defined by NI 43-101 for this project, has reviewed and approved of the technical disclosure contained in this news release.

About STLLR Gold
STLLR Gold Inc. (TSX: STLR) (OTCQX: STLRF) (FSE: O9D) is a Canadian gold development company actively advancing two cornerstone gold projects in Canada: The Tower Gold Project in the Timmins Mining Camp in Ontario and the Colomac Gold Project located north of Yellowknife, Northwest Territories. Each of these two projects has the potential for a long-life and large-scale operation and are surrounded by exploration land with favourable upside potential. STLLR's experienced management team, with a track record of successfully advancing projects and operating mines, is working towards rapidly advancing these projects.

Contact Us
STLLR Gold Investor Relations
+1 (416) 863-2105 | investors@stllrgold.com | www.STLLRgold.com

Cautionary Statement Regarding Forward-Looking Information
This news release contains "forward-looking information" within the meaning of applicable Canadian securities legislation. Forward-looking information includes, but is not limited to the potential advancement of Hollinger to a mineral resource estimate and economic studies, the timing of the remaining results from Hollinger, the continuing characteristics of the grade and mineralization profile of Hollinger, the amenability of Hollinger mineralization to mining and milling, and the upside potential of Hollinger. Generally, forward-looking information can be identified by the use of forward-looking terminology such as "accelerate", "add" or "additional", "advancing", "anticipates" or "does not anticipate", "appears", "believes", "can be", "conceptual", "confidence", "continue", "convert" or "conversion", "deliver", "demonstrating", "estimates", "encouraging", "expand" or "expanding" or "expansion", "expect" or "expectations", "fast-track", "forecasts", "forward", "goal", "improves", "increase", "intends", "justification", "leading", "plans", "potential" or "potentially", "pro-forma", "promise", "prospective", "prioritize", "reflects", "re-rating", "robust", "scheduled", "stronger", "suggesting" or "suggests", "support", "updating", "upside", "will be" or "will consider", "work towards", or variations of such words and phrases or state that certain actions, events or results "may", "could", "would", "might", or "will be taken", "occur", or "be achieved".

Forward-looking information is based on the opinions and estimates of management at the date the information is made, and is based on a number of assumptions and is subject to known and unknown risks, uncertainties and other factors that may cause the actual results, level of activity, performance or achievements of STLLR to be materially different from those expressed or implied by such forward-looking information, including risks associated with required regulatory approvals, the exploration, development and mining such as economic factors as they effect exploration, future commodity prices, changes in foreign exchange and interest rates, actual results of current exploration activities, government regulation, political or economic developments, the ongoing wars and their effect on supply chains, environmental risks, pandemic risks, permitting timelines, capex, operating or technical difficulties in connection with development activities, employee relations, the speculative nature of gold exploration and development, including the risks of diminishing quantities of grades of reserves, contests over title to properties, and changes in project parameters as plans continue to be refined as well as those risk factors discussed in the Company's Annual Information Form for the year ended December 31, 2024, available on www.sedarplus.ca. Although STLLR has attempted to identify important factors that could cause actual results to differ materially from those contained in forward-looking information, there may be other factors that cause results not to be as anticipated, estimated or intended. There can be no assurance that such information will prove to be accurate, as actual results and future events could differ materially from those anticipated in such information. Accordingly, readers should not place undue reliance on forward-looking information. STLLR does not undertake to update any forward-looking information, except in accordance with applicable securities laws.


1 Hollinger Historical Production Statistics, Geology Ontario database: https://www.geologyontario.mines.gov.on.ca/persistent-linking?mineral-inventory=MDI42A06NW00007

2 Ontario's new "Mining Act for Recovery of Minerals" regulation to be in effect July 1, 2025. For more details: https://news.ontario.ca/en/release/1005407/ontario-supporting-recovery-of-residual-metals-and-minerals

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FAQ

What are the latest gold grades reported from STLLR's Hollinger Tailings Project?

The latest results show consistent grades around 0.50 g/t Au, with key intersections including 0.50 g/t Au over 24.40m and 0.51 g/t Au over 19.80m.

How many drill holes has STLLR completed at the Hollinger Tailings Project?

STLLR has completed 423 sonic drill holes totaling 11,223 meters, with results published for 81 holes so far.

What is the historical production of the original Hollinger Mine?

The Hollinger Mine operated from 1910 to 1968 and produced 19 million ounces of gold at an average grade of 9.9 grams per tonne.

How much tailings material is estimated to be at the Hollinger site?

The site contains an estimated 50-60 million tonnes of tailings material.

What regulatory changes benefit STLLR's Hollinger Tailings Project?

Recent amendments to Ontario's Mining Act streamline permitting processes for reprocessing legacy tailings while promoting environmental remediation.
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