Wesdome Gold Mines discovers multiple high-grade lenses at Kiena mine, Quebec

Wesdome Gold Mines Ltd. [TSX: WDO; OTCQX: WDOFF] provided a comprehensive update on its underground exploration drilling activities at its wholly owned Kiena mine in Val-d’Or, Québec.

“Our drilling program in the Kiena Deep A and Footwall Zones continues to yield exceptional results that validate our geological models,” stated Anthea Bath, President and CEO. “Within a single year, we’ve successfully expanded both the main Kiena Deep A Zone and the A1 lenses through refined modeling and strategic drilling, extending their footprint both laterally and at depth.”

“We’ve identified six new lenses across the deposit, including three high-grade discoveries in Kiena Deep; one within the A2 structure, which has the potential to increase the number of ounces per level in Kiena Deep, and two lenses in the Footwall Zone. Additionally, updated modeling has revealed three new lenses in the B Zone located near existing Kiena Deep infrastructure – quadrupling our count from the previous model.”

“These six newly discovered lenses highlight the substantial exploration upside in our mine’s deeper zones and strengthen our confidence in continuing to extend Kiena’s mine life well into the future.”

Jono Lawrence, Senior Vice President, Exploration and Resources, added, “Recent drilling in the B Zone has been highly encouraging, returning two high-grade intercepts that include visible gold. We plan to follow up this area, which along with Presqu’île and Dubuisson, represents a source of potential future production located near existing infrastructure. At Dubuisson, we’ve already commenced deep drilling from level 33 to test geophysical anomalies identified last year. As soon as weather conditions allow, we will mobilize two barges to expand that program, follow up on 2025 targets and test entirely new areas.”

Highlights: Footwall Zone – Drilling intersects two new high-grade lenses and confirms continuity in the Footwall Zone. Hole N127-7061: 17.6 g/t Au uncapped over 18.6 metres core length (12.7 g/t Au capped, 6.1 metres true width), including 203.0 g/t Au uncapped over 0.8 metres core length (90.0 g/t Au capped, 0.3 metres true width).

Hole N134-7138: 14.1 g/t Au uncapped over 17.7 metres core length (14.1 g/t Au capped, 2.5 m true width)

Hole N127-7062: 43.4 g/t Au uncapped over 5.6 metres core length (22.3 g/t Au capped, 2.5 m true width), including 208.0 g/t Au uncapped over 1.0 metre core length (90.0 g/t Au capped, 0.4 m true width).

Hole N127-7063: 16.6 g/t Au uncapped over 10.1 metres core length (10.1 g/t Au capped, 3.5 m true width), ncluding 155.5 g/t Au uncapped over 1.0 metre core length (90.0 g/t Au capped, 0.3 m true width).

Kiena Deep A and A2 Zones – Conversion and extensional drilling expand known lenses and identify new high-grade lens in A2.

Hole N127-7058: 161.3 g/t Au uncapped over 5.2 metres core length (33.3 g/t Au capped, 3.1 m true width), including 579.0 g/t Au uncapped over 0.7 metres core length (90.0 g/t Au capped, 0.4 m true width), including 552.0 g/t Au uncapped over 0.7 metres core length (90.0 g/t Au capped, 0.4 m true width).

Hole N127-K020: 49.7 g/t Au uncapped over 8.8 metres core length (15.2 g/t Au capped, 6.3 m true width). Hole N127-7059: 12.9 g/t Au uncapped over 9.7 metres core length (12.9 g/t Au capped, 3.5 m true width). Hole N134-7110: 15.3 g/t Au uncapped over 3.6 metres core length (15.3 g/t Au capped, 3.2 m true width).

B Zone: Drilling confirms the presence of multiple mineralized lenses and visible gold: Hole N134-7192: 33.1 g/t Au uncapped over 2.2 metres core length (20.9 g/t Au capped, 2.2 m true width).

Hole N134-7172: 23.1 g/t Au uncapped over 2.0 metres core length (18.0 g/t Au capped, 1.9 m true width), including 45.3 g/t Au uncapped over 1.0 metre core length (35.0 g/t Au capped, 1.0 m true width).

Hole N134-7191: 20.5 g/t Au uncapped over 2.2 metres core length (17.3 g/t Au capped, 1.8 m true width). Hole N134-7170: 5.6 g/t Au uncapped over 6.5 metres core length (5.6 g/t Au capped, 5.2 m true width).

Hole N134-7169: 12.6 g/t Au uncapped over 2.7 metres core length (8.3 g/t Au capped, 2.1 m true width), including 37.5 g/t Au uncapped over 0.9 metres core length (35.0 g/t Au capped, 0.7 m true width).

More than 14,000 metres of exploration drilling were completed at Kiena in the fourth quarter of 2025, bringing the total for the year to nearly 72,000 metres. The recently commissioned 134-level exploration platform, which has proven instrumental in accessing the deeper zones, will provide five exploration drill bays in total upon completion, each providing improved drilling angles for testing extensions up- and down-plunge in the Kiena Deep A and Footwall Zones, as well as for testing the down-plunge extension of the B Zone. The remaining development of this drift, including two drilling bays, will be completed in the first half of 2026.

Drilling in 2025 has defined a new mineralized lens within the A2 sub-domain structure measuring approximately 80 metres high by 30 metres wide with an average true thickness of 4 metres. This lens incorporates a previously reported intercept that was not assigned to a specific lens at time of reporting. The intercept reported was 29.1 g/t Au (capped) over 2.9 metres true width.

Drilling has confirmed the new A2 new lens by extending delineation drilling that was initially designed for stopes located higher within the Kiena Deep deposit. These holes intersected mineralization that supports both thickness and grade.

Further drilling is planned in 2026 with the objective of testing for extensions of the lens both laterally and at depth.

Footwall Zone: Recent drill results have continued to confirm the geologic model and identified two new mineralized lenses, bringing the total number of Footwall Zone lenses to nine. The two newly identified lenses are approximately 40 metres high by 50 metres wide and 45 metres high by 65 metres wide, with their true thickness varying between two and four metres, consistent with other known Footwall Zone lenses. The 2025 drill program also successfully extended three other Footwall Zone lenses by 15 to 25 metres laterally and the mineralized wireframes have increased in height, with vertical extents now exceeding 200 metres. Most lenses remain open at depth and laterally.

The Footwall Zone consists of folded subparallel lenses located in the footwall of the Kiena Deep A Zone. The Kiena Deep A Zone and Footwall Zone are usually separated by a major folded fault zone and the Footwall Zones are controlled by key geological contacts between mafic volcanic (basalt) and ultramafic (komatiite) units. Gold mineralization is associated with quartz veins with local visible gold that are spatially associated with folded and sheared komatiite and basaltic komatiite units. Gold mineralization is also observed in deformed basalt and flow breccia bands present within ultramafic units.

The B Zone, located near existing Kiena Deep infrastructure, and below the original S50 orebody, has evolved from a secondary target into a near-term development opportunity.

Drilling in 2025 has upgraded the geological interpretation, identifying multiple lenses stacked on 5 to 15-metre intervals, with local instances of visible gold, and replacing the previous single-lens model. The B Zone mineralization remains open laterally and at depth. Further drilling is planned.

Wesdome is a Canadian-focused gold producer with two high-grade underground assets, Eagle River in Northern Ontario and Kiena in Val-d’Or, Québec.