Hemlo Mining intercepts 89.9 g/t Au over 3.0 m at South-Rim

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

PR Newswire

TORONTO , Sept. 10, 2026 /PRNewswire/ -- 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