Wesdome Intersects New Zone at Kiena’s Dubuisson Deposit

Wesdome Gold Mines Ltd. (TSX:WDO,OTC:WDOFF, OTCQX:WDOFF) (” Wesdome ” or the ” Firm “) is happy to announce a brand new mineralized zone on the Dubuisson deposit, situated east of the Kiena Deep deposit on the Firm’s 100% owned Kiena Mine Complicated in Val-d’Or, Québec.

The brand new zone has been intersected by drill gap DB-25-068, returning 4.1 g/t Au (uncut) over 25.8 metres (core size). Positioned roughly 100 metres beneath, and lateral to, the Dubuisson North Zone and presently interpreted to be between the Dubuisson North and South zones, this new zone represents a compelling alternative to broaden the Dubuisson deposit at depth. The mixed grade and thickness are notably encouraging, because the intercept highlights the potential for future bulk-tonnage mineralization at Kiena.

Highlights

New Dubuisson Zone (Figures 1,2 Desk 1) ¹
Drilling confirms a brand new mineralized zone and useful resource growth potential

• Gap DB-25-068: 4.1 g/t Au over 25.8 metres (from 410.4 metres, core size, uncapped)
  Together with: 6.1 g/t Au over 6.1 metres (from 412.5 metres, core size, uncapped)

Anthea Tub, President and Chief Govt Officer, said, “This new mineralized zone underscores the robust potential for growth on the Dubuisson deposit. The intercept’s grade, width, and proximity to present infrastructure – inside 350 metres of the Stage 33 exploration drift – make it notably vital. Just like the Shawkey South Zone, this space stays fully open at depth and displays robust geological similarities to the adjoining Goldex mine. This model of mineralization is especially thrilling because it highlights the potential for bulk-tonnage underground deposits inside our land bundle. Whereas it is nonetheless early days, we’re starting to consider how such deposits may increase future manufacturing.”

Jono Lawrence, Senior Vice President Exploration and Assets, added, “Wesdome initiated drilling on the diorite-hosted Dubuisson deposit in June, focusing on infill and geotechnical holes to help useful resource conversion throughout the Dubuisson North and South zones, and we efficiently intercepted a brand new zone late in the summertime. As of mid-October, the 2025 drilling marketing campaign has accomplished 41 holes totaling 11,361 metres drilled. To place this into perspective, solely 53 holes had been drilled at Dubuisson within the three years previous to 2025, underscoring each how underexplored this layer stays and the size of its untapped potential throughout the broader Kiena Complicated. The outcomes so far proceed to reveal that the extra we drill, the extra we discover. At the least one follow-up gap is deliberate earlier than the tip of the present barge drilling season, with a bigger barge-based drilling program scheduled to start in summer time 2026. A extra expansive exploration replace will probably be launched later within the fourth quarter.”

Technical Particulars

The Dubuisson deposit presently hosts a possible reserve of 36,400 ounces at 5.8 g/t, an indicated useful resource of 18,000 ounces at 4.6 g/t Au unique of reserves, and an inferred useful resource of 55,600 ounces at 5.4 g/t Au ² .

The deposit is characterised by a stacked system of shallow-dipping, quartz-tourmaline veins current inside sheared, albite and hematite-altered, subvertical diorite intrusive models, a mode of mineralization distinct from that of Kiena Deep. The models development roughly east-west, dip steeply, and happen in two broad groupings, the Dubuisson North Zone and the Dubuisson South Zone. The diorite models, together with feldspar porphyry dykes, crosscut the deformed ultramafic rocks and schist models that make up a lot of the host nation rock.

Structural observations from drill core and televiewer readings point out that the veins dip shallowly to the north. The true width of mineralization can’t be estimated because of the variety of drill holes accomplished so far.

The quartz-tourmaline vein-hosted model of mineralization at Dubuisson is geologically just like that recognized via drilling on the Shawkey South Zone, situated roughly two kilometres to the southwest, the place drill gap S-21-831 intersected 2.3 g/t Au over 72.0 metres (check with Could 23, 2023 press launch ). Like Dubuisson, the Shawkey Zone is hosted inside a diorite unit, and is situated lower than two kilometres west of, and alongside development from, the Goldex mine intrusive.

A composite estimate returned 4.1 g/t Au over 25.8 metres from 410.4 metres down gap (core size, uncapped). This consists of 4 intervals with grades corresponding to, or exceeding, the cut-off grades beforehand utilized in useful resource estimation on the Dubuisson deposit (2.62 g/t Au cut-off; all core size, uncapped):

• 6.1 g/t Au over 6.1 metres at (from 412.5 metres)
• 3.8 g/t Au over 1.9 metres at (from 423.4 metres)
• 8.1 g/t Au over 3.5 metres at (from 428.6 metres)
• 3.6 g/t Au over 2.1 metres at (from 434.1 metres)

Making use of decrease cut-off grades may doubtlessly outline a broader mineralized interval.

About Wesdome

Wesdome is a Canadian-focused gold producer with two high-grade underground property, the Eagle River mine in Ontario and the Kiena mine in Québec. The Firm’s main purpose is to responsibly leverage its working platform and high-quality brownfield and greenfield exploration pipeline to construct a rising value-driven gold producer.

For Additional Info

Technical Disclosure

Analytical work was carried out by ALS Minerals of Val-d’Or (Quebec), a licensed industrial laboratory (Accredited Lab #689). Pattern preparation was accomplished at ALS Minerals in Val d’Or (Quebec). Assaying comprised fireplace assay strategies with an atomic absorption end. Any pattern assaying >10 g/t Au was re-run utilizing the fireplace assay technique with gravimetric end, and in addition with the metallic sieve technique. Along with laboratory inside duplicates, requirements, and blanks, the geology division inserts blind duplicates, requirements, and blanks into the pattern stream at a frequency of 1 in twenty to observe high quality management. Moreover, blanks are inserted after seen gold is noticed to focus on potential contamination between samples.

The technical content material of this launch has been compiled, reviewed, and authorized by Serge Gonthier, P.Geo, Principal Geologist, Assets and Geology for Wesdome, and Breanne Beh, P. Geo., Director Floor and Greenfields Exploration for Wesdome, who’re the Firm’s “Certified Particular person” as outlined in Nationwide Instrument 43-101 – Requirements of Disclosure for Mineral Initiatives.

Ahead-Wanting Info

This press launch accommodates “forward-looking info” throughout the that means of relevant Canadian securities laws, together with however not restricted to statements concerning: the chance to broaden the Dubuisson deposit at depth; the potential for future bulk-tonnage mineralization at Kiena; the deliberate follow-up gap earlier than the tip of the present barge drilling season, together with the bigger barge-based drilling program scheduled for 2026; and the results of making use of decrease cut-off grades to the deposit to doubtlessly outline a broader mineralized interval. Ahead-looking statements are primarily based on the opinions and estimates of administration as of the date such statements are made and they’re topic to recognized and unknown dangers, uncertainties, and different elements which will trigger the precise outcomes, degree of exercise, efficiency or achievements of Wesdome to be materially completely different from these expressed or implied by such forward-looking statements or forward-looking info. Though administration of Wesdome has tried to establish essential elements that might trigger precise outcomes to vary materially from these contained in forward-looking statements or forward-looking info, there could also be different elements that trigger outcomes to not be as anticipated, estimated or meant.

There might be no assurance that forward-looking statements or info will show to be correct, as precise outcomes and future occasions may differ materially from these anticipated in such statements. The Firm undertakes no obligation to replace forward-looking statements if circumstances, administration’s estimates or opinions ought to change, besides as required by securities laws. Accordingly, the reader is cautioned to not place undue reliance on forward-looking statements.

APPENDIX

Determine 1. Plan View – Kiena Mine

Determine 2. Dubuisson Zone – Cross-Part (Wanting West)

Desk 1: Dubuisson Drill Outcomes (Beforehand Unreleased)

Composite Outcomes
Figures in desk could not add because of rounding

Composite estimate primarily based on assay cut-off grade of two.62 g/t Au, with as much as two consecutive pattern intervals with assays beneath 2.62 g/t Au dispersed between the samples with at or greater than cut-off grade values.

Assay Outcomes

Figures in desk could not add because of rounding

*Provided that there isn’t any conceptual geological mannequin for Dubuisson Central Zone neither true width nor high cuts had been outlined.

____________

1. No high reduce or true width outlined ; down gap composite estimate primarily based on assay cut-off grade of two.62 g/t Au, with as much as two consecutive pattern intervals with assays beneath 2.62 g/t Au dispersed between the higher-grade values .
2. Confer with March 19, 2025 press launch for notes to Mineral Assets and Mineral Reserves.

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