Canadian gold producer Hemlo Mining has announced findings from its 2025 B-Zone exploration drilling programme at the Hemlo Gold Mine near Marathon, Ontario.
The latest drilling results have extended mineralisation at the mine by 400m in depth and identified a new mineralised zone within the Cedar Creek area.
The mineral resource conversion drilling has enhanced geological certainty and is anticipated to facilitate a possible increase in indicated mineral resources around 100m beneath current mining levels.
Moreover, the discovery of a new mineralised volcano-sedimentary unit outside the existing B-Zone presents a promising opportunity for future greenfield exploration.
Noteworthy assay results include an intersection of 14.5 grams per tonne (g/t) gold over 3.6m in hole 90102505 and 7g/t over 2.4m in hole 90102504 as part of the growth drilling initiative.
Meanwhile, mineral resource conversion efforts yielded 16.1g/t gold over 3.3m in hole 90102514.
The company has five underground drill rigs currently active on-site as part of a comprehensive 130,000m drilling programme.
This ongoing work underscores Hemlo Mining’s commitment to extending the mine's life and improving its long-term economic outlook.
The main focus of the 2025 drilling work was on the Hangingwall Zone and Footwall Zone (BFW) structures.
The resource conversion drilling has delineated multiple mineralised shoots within the BFW mineralisation, affirming the presence of high-grade material in these zones.
In terms of greenfield opportunities, assay results show gold mineralisation typically hosted within or near the Moose Lake volcanic complex, challenging past assumptions about the largely barren Cedar Creek meta-sedimentary unit.
Hemlo Mining president and CEO Jason Kosec said: “Since acquiring Hemlo in December 2025, drilling at the E-Zone and B-Zone continues to demonstrate the scale, continuity and depth potential of the mineral system.
“The B-Zone Footwall, which contributes approximately 20% of current gold production, remains open at depth, reinforcing the strength of our 130,000m underground drilling programme.
“By leveraging existing mine and mill infrastructure, we are advancing low-risk, capital-efficient growth, extending mine life, and positioning the company for a planned mineral resource and reserve update in the second half of 2027.”
In December 2025, Hemlo Mining achieved a major milestone with the completion of its first gold pour at the Hemlo gold mine.
