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Hemlo Mining Corp. Intersects 89.9 g/t Au over 3.0 Metres at South-Rim, Further Defining High-Grade Mineralization Adjacent to C-Zone
September 10, 2026
Toronto, Ontario, Canada – September 10, 2026 – Hemlo Mining Corp. (TSX: HMMC, OTCQX: HMMCF) (“Hemlo Mining” or the “Company”) is pleased to announce additional assay results from its ongoing drilling program designed to support future mineral resource growth across the Hemlo Gold Mine (“Hemlo” or the “Mine”), located near Marathon, Ontario, Canada.
Additional assay results from the South-Rim Zone (“South-Rim”) continue to define a newly recognized, high-grade mineralized domain with strong potential for near-term, low-capital resource growth. Drilling continues to intersect the interpreted South-Rim horizon, validating the Company's geological model and reinforcing South-Rim as a potential near-mine growth opportunity adjacent to active C-Zone mining.
Highlights:
New South-Rim results include 89.89 g/t Au over 3.0 metres in hole 6702608, 14.81 g/t Au over 10.0 metres in hole 6702632 and 12.97 g/t Au over 7.0 metres in hole 6702615 (see Figure 1 and Table 1 for additional results).
2026 drilling has now demonstrated approximately 500 metres of high-grade mineralization within the interpreted 1.5-kilometre South-Rim Zone, leaving approximately 1 kilometre of additional extent to be tested and defined.
South-Rim lies only 50 to 150 metres from active C-Zone mining and existing underground infrastructure, providing a potential pathway to near-term, low-capital resource growth.
The upper extension projects toward the open-pit resource shell, creating potential to support both underground and open-pit resource growth.
Strong results have led to an expanded program and the addition of Conversion drilling.
South-Rim remains open along strike, down plunge and to the east and west, with deeper drilling planned for the fourth quarter of 2026.
2026 South-Rim drilling results were not included in the June 2026 Updated Mineral Resource Estimate (the “MRE”) and these results are expected to support future Mineral Resource growth.
Jason Kosec, President, CEO & Director of Hemlo Mining, commented: “South-Rim is rapidly emerging as one of the most exciting near-mine growth opportunities at Hemlo. Since our initial results announced on May 14th, drilling has continued to deliver strong grades and meaningful widths where predicted, including 89.9 g/t Au over 3.0 metres and 14.8 g/t Au over 10.0 metres. We have now demonstrated approximately 500 metres of high-grade mineralization within the interpreted 1.5-kilometre zone, with substantial additional extent remaining to be tested. Its location, only 50 to 150 metres from active C-Zone mining, creates a potential pathway to low-capital resource growth. Based on the strength of the results, we have expanded the program and added Conversion drilling to potentially advance portions of the zone toward Indicated classification. South-Rim remains open and is expected to be an important contributor to our comprehensive Mineral Resource and Mineral Reserve update targeted for the second half of 2027.”
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www.hemlomining.com/news/...mineralization-adjacent-to-c-zone
September 10, 2026
Toronto, Ontario, Canada – September 10, 2026 – Hemlo Mining Corp. (TSX: HMMC, OTCQX: HMMCF) (“Hemlo Mining” or the “Company”) is pleased to announce additional assay results from its ongoing drilling program designed to support future mineral resource growth across the Hemlo Gold Mine (“Hemlo” or the “Mine”), located near Marathon, Ontario, Canada.
Additional assay results from the South-Rim Zone (“South-Rim”) continue to define a newly recognized, high-grade mineralized domain with strong potential for near-term, low-capital resource growth. Drilling continues to intersect the interpreted South-Rim horizon, validating the Company's geological model and reinforcing South-Rim as a potential near-mine growth opportunity adjacent to active C-Zone mining.
Highlights:
New South-Rim results include 89.89 g/t Au over 3.0 metres in hole 6702608, 14.81 g/t Au over 10.0 metres in hole 6702632 and 12.97 g/t Au over 7.0 metres in hole 6702615 (see Figure 1 and Table 1 for additional results).
2026 drilling has now demonstrated approximately 500 metres of high-grade mineralization within the interpreted 1.5-kilometre South-Rim Zone, leaving approximately 1 kilometre of additional extent to be tested and defined.
South-Rim lies only 50 to 150 metres from active C-Zone mining and existing underground infrastructure, providing a potential pathway to near-term, low-capital resource growth.
The upper extension projects toward the open-pit resource shell, creating potential to support both underground and open-pit resource growth.
Strong results have led to an expanded program and the addition of Conversion drilling.
South-Rim remains open along strike, down plunge and to the east and west, with deeper drilling planned for the fourth quarter of 2026.
2026 South-Rim drilling results were not included in the June 2026 Updated Mineral Resource Estimate (the “MRE”) and these results are expected to support future Mineral Resource growth.
Jason Kosec, President, CEO & Director of Hemlo Mining, commented: “South-Rim is rapidly emerging as one of the most exciting near-mine growth opportunities at Hemlo. Since our initial results announced on May 14th, drilling has continued to deliver strong grades and meaningful widths where predicted, including 89.9 g/t Au over 3.0 metres and 14.8 g/t Au over 10.0 metres. We have now demonstrated approximately 500 metres of high-grade mineralization within the interpreted 1.5-kilometre zone, with substantial additional extent remaining to be tested. Its location, only 50 to 150 metres from active C-Zone mining, creates a potential pathway to low-capital resource growth. Based on the strength of the results, we have expanded the program and added Conversion drilling to potentially advance portions of the zone toward Indicated classification. South-Rim remains open and is expected to be an important contributor to our comprehensive Mineral Resource and Mineral Reserve update targeted for the second half of 2027.”
...
www.hemlomining.com/news/...mineralization-adjacent-to-c-zone
