Minto PEA Values Yukon Copper Restart at $494 Million

Selkirk Copper Mines (TSXV: SCMI; US-OTC: SKRKF) reported a preliminary economic assessment assigning its brownfield Minto copper project in Yukon a value of $494 million (US$353 million), almost three times the project's costs, with the US-OTC shares at 1.25, up 4.60% on Sept. 22, 2026.

Selkirk Copper Mines (US-OTC: SKRKF; TSXV: SCMI) has put a number on the restart case for Minto, the past-producing copper mine in Yukon that it is trying to bring back to life. A preliminary economic assessment completed for the brownfield project assigns it a value of $494 million, or US$353 million, a figure the company says is almost three times the project's costs.

That ratio — value to cost — is the single most important line in the study, and it is what moved the stock. The US-OTC quote changed hands at 1.25 as of 17:50 GMT on Sept. 22, 2026, up 4.60% from a previous close of 1.20, with the day's range running from 1.21 to 1.25. The shares finished the session at the top of that band. For context, the broad market was going nowhere: the S&P 500 tracker was flat at $773.50, the Nasdaq 100 proxy added 0.53% to $745.38, and the Dow tracker slipped 0.43% to $517.57. Selkirk's move was company-specific, not a rising tide.

What a PEA does and does not settle

A preliminary economic assessment is the first of three tiers of technical study under Canadian disclosure rules, ahead of a pre-feasibility study and then a full feasibility study. It is allowed to include inferred mineral resources — the lowest-confidence resource category — in its production schedule, which the later studies cannot do without further drilling. That permissiveness is exactly why a PEA is an early screening tool rather than a construction decision. It tells a board and its bankers whether the shape of the project is worth spending money to define more tightly.

So the $494 million figure is a modelled outcome, not cash in hand. It rests on assumptions about copper prices, operating costs, recovery rates, mine life and the discount rate applied to future cash flows. Selkirk has not, in the disclosure available here, broken out those inputs, and none should be assumed. What is disclosed is the headline valuation and the relationship between that valuation and the project's cost base: value roughly triple cost. Investors evaluating the study will want to see the capital estimate, the annual copper output, the strip ratio and the metal price deck that underpins it before treating the number as anything more than a first pass.

The arithmetic embedded in the dual-currency presentation is itself worth noting. US$353 million against $494 million implies a conversion of roughly 0.71 — an illustrative rate derived from the two figures Selkirk reported, not a quoted FX mark. Copper is priced in US dollars; Yukon labour, diesel, steel and camp costs are not. A study whose revenue line is denominated in one currency and whose cost line sits largely in another is sensitive to that spread, and the sensitivity cuts both ways.

Brownfield means the hard part may already be built

The word doing quiet work in the announcement is "brownfield." Minto is not a discovery on a ridge line reachable by helicopter. It is a mine that has operated before, which typically means road access, a footprint that has been permitted at least once, a defined orebody with historical production records, and — depending on what survived care and maintenance — some portion of the plant, camp and tailings infrastructure still standing.

That matters because the failure mode for junior copper developers in northern Canada is almost never geology. It is capital cost inflation, permitting timelines and power. A restart candidate starts several years and a great deal of capital ahead of a greenfield project of the same size, which is a large part of why a value-to-cost ratio near three is achievable at all at this stage. It is also why the market treats restart stories differently: the question shifts from "is there a mine here" to "what condition is it in, what does it cost to recommission, and who funds it."

The report of the study was published by Northern Miner.

The funding gap is the next real test

A junior trading near 1.25 on the US over-the-counter market does not fund a mine restart out of its treasury. Between a PEA and a poured concrete foundation sit, in the usual sequence: infill drilling to convert inferred resources to measured and indicated, a pre-feasibility study, permitting and First Nations agreements, a feasibility study, and then a financing package that in copper typically blends equity, debt, and some form of stream or offtake with a trader or a downstream buyer.

Each of those steps is a point at which the $494 million figure can be revised in either direction. Capital estimates in mining have a well-documented tendency to drift upward between PEA and feasibility as engineering definition improves and contingency is properly loaded. Against that, copper's structural demand story — grid buildout, electrification, data centre power infrastructure — has kept the metal in favour with financiers in a way that many commodities are not.

What to watch from here

Three things will determine whether the market keeps paying up for the Minto thesis.

• The full study inputs. Capital cost, sustaining capital, mine life, annual copper production and the copper price assumption. A high value-to-cost ratio built on an aggressive price deck is a different asset than the same ratio built on a conservative one.
• Condition of existing infrastructure. How much of the former operation can be recommissioned versus replaced is the swing factor in any brownfield capital estimate.
• Financing and partnership news. Any strategic investment, offtake agreement or stream would validate the study externally in a way no internal number can.

For now the market has given Selkirk a 4.60% day on a flat tape. That is a reasonable reaction to a first-tier study — an acknowledgement that the project screens well, not a verdict that it will be built.

Key facts

• PEA value: $494 million (US$353 million) for the Minto project
• Value vs. cost: Almost three times the project's costs, per the study
• Share price: SKRKF at 1.25, +4.60% (prev. close 1.20) as of 17:50 GMT, Sept. 22, 2026
• Listings: TSXV: SCMI and US-OTC: SKRKF; project located in Yukon, Canada

Frequently asked questions

What did Selkirk Copper's Minto PEA conclude?

The preliminary economic assessment assigned Selkirk Copper Mines' brownfield Minto project in Yukon a value of $494 million, equivalent to US$353 million. The company said that figure is almost three times the project's costs. Detailed inputs such as capital cost, mine life and the copper price assumption were not included in the headline disclosure available here.

How did the shares react?

Selkirk's US over-the-counter listing, SKRKF, traded at 1.25 as of 17:50 GMT on Sept. 22, 2026, up 4.60% from a previous close of 1.20, and closed the session at the top of a 1.21 to 1.25 daily range. The move came on a broadly flat day for major U.S. equity benchmarks.

What is a preliminary economic assessment?

A PEA is the earliest formal economic study under Canadian mining disclosure rules. Unlike a pre-feasibility or feasibility study, it may include inferred mineral resources — the lowest-confidence category — in its production plan. That makes it a screening tool to decide whether further spending is justified, not a basis for a construction decision.

Why does 'brownfield' matter for the Minto project?

Brownfield means the site has produced before. A past-producing mine usually comes with road access, prior permitting history, known geology and some surviving plant, camp or tailings infrastructure. That can cut both the capital bill and the timeline versus a greenfield project, which is one reason restart candidates can show strong value-to-cost ratios early on.

Where is the Minto mine?

Minto is located in Yukon, in northern Canada. It is a past-producing copper operation that Selkirk Copper Mines is evaluating for restart. Projects in the territory typically face considerations around access, power supply, seasonal logistics, permitting timelines and agreements with First Nations before development can proceed.

What comes next for the project?

The normal sequence after a PEA is infill drilling to upgrade inferred resources, a pre-feasibility study, permitting and community agreements, a feasibility study, and then project financing — often a mix of equity, debt and offtake or streaming arrangements. Each stage can revise the headline valuation upward or downward as engineering definition improves.

Sources

• Selkirk Copper’s $494M value for Minto mine nearly triple its costs — Northern Miner