PMET adds tantalum leverage as Shaakichiuwaanaan moves toward development

Tantalum reshapes Shaakichiuwaanaan economics

PMET Resources Inc. (ASX:PMT) has put a much stronger economic case around its flagship Shaakichiuwaanaan project, with the addition of tantalum and an underground-first mine plan lifting the updated feasibility study’s after-tax NPV8% to approximately CA$5.1 billion. The study assumes a long-term spodumene concentrate price of US$1,788 per tonne and a tantalite price of US$120 per pound of contained Ta2O5, producing an after-tax IRR of about 40.4%.

The headline improvement is not simply a larger price deck. On a like-for-like basis using the 2025 study’s lithium price and exchange-rate assumptions, PMET says after-tax NPV8% rises to approximately CA$2.3 billion, with CA$519 million attributed to the tantalum co-product and CA$180 million to mining-plan improvements. Life-of-mine total cash operating costs fall 19% to CA$593.50 per tonne of spodumene concentrate, while AISC drops 18% to CA$657.10 per tonne, both net of tantalum credits.

Underground-first plan raises early production

The revised sequence brings high-grade ore from the Nova Zone into production first through a 2.2 million-tonne-per-year underground operation and a simplified dense media separation flowsheet. Phase 1 is designed to ramp up to approximately 560,000 tonnes per year of SC5.5 spodumene concentrate during its first three production years, with commissioning targeted for late 2029 and commercial production expected around the end of the first quarter of 2030.

A second processing train and open-pit expansion would later lift combined nameplate capacity to 5.1 million tonnes per year, supporting up to approximately 800,000 tonnes of spodumene concentrate annually. Across an estimated 19-year mine life, the study forecasts 13.4 million tonnes of spodumene concentrate and 27.4 kilotonnes of tantalite concentrate. The reserve supporting the plan is 83.0Mt at 1.27% Li2O and 148 parts per million Ta2O5, all classified as probable; it includes the project’s maiden tantalum reserve. The broader resource base, including caesium and additional pegmatites, was expanded in the November caesium resource update, but those resources are not part of this CV5 reserve.

Funding, approvals and leadership now become central

The feasibility study does not amount to a construction decision. PMET is targeting a final investment decision in late 2027, subject to approvals and funding, while the environmental and social assessment process remains under way and an Impact Benefit Agreement with Eeyou/Cree stakeholders is expected before operations. The company has received non-binding letters of interest or support from Société Générale, Export Development Canada, KfW IPEX-Bank and another Canadian government-backed institution, but those approaches are not credit approvals or binding financing commitments.

Against that development backdrop, Ken Brinsden will remain president and CEO while PMET conducts an international search for his successor. Once appointed, Brinsden is expected to become executive chair, with current chair Pierre Boivin moving to lead independent director; after a handover, Brinsden is expected to become non-executive chair. The arrangement preserves Brinsden’s stated strategic and commercial involvement, but the next CEO will inherit the more operationally demanding stage of permitting, financing, construction and commissioning in Quebec.

Price sensitivity leaves a clear test

The study’s economics remain exposed to commodity assumptions. PMET says each US$100 per tonne change in the SC5.5 spodumene price changes post-tax NPV8% by approximately CA$465 million. Its selected lithium price is above the near-broker-consensus assumption of roughly US$1,400 per tonne, although the company also reports an after-tax NPV8% of approximately CA$3.29 billion at that lower price. Tantalum provides a meaningful offset in the model, but its assumed price is US$120 per pound, below the spot reference cited in the release.

The next substantive markers are the CEO appointment, the proposed PEA covering CV5 and CV13 across lithium, caesium and tantalum, progress through the approval process and the financing structure that can support Phase 1. The feasibility study has improved the project’s paper returns; the unanswered question is whether those returns can be converted into an approved, financed mine without the market, permitting process or leadership transition becoming the limiting factor.