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GOLDPEAPROJECT ECONOMICS

Fox Complex Expansion (IA Mine Plan) PEA: $175M NPV, $438M Capex

ByMining Stocks Research
Sep 10, 2026
Source:McEwen Mining Inc.
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McEwen Mining Inc.'s Fox Complex Expansion (IA Mine Plan) in Timmins, Northeastern Ontario, Canada has a Preliminary Economic Assessment (PEA) outlining an after-tax NPV of $175M and initial capital of $438M. The mine plan runs 12.3 years at about 71980 oz Au/year per year.

McEwen Mining Inc.'s Fox Complex Expansion (IA Mine Plan) has reported Preliminary Economic Assessment (PEA) results for the gold project in Timmins, Northeastern Ontario, Canada. The study headlines an after-tax net present value of $175M at a 5% discount rate. It reflects McEwen Mining Inc.'s (MUX.TO) latest disclosed economics for the asset.

Economics. The after-tax NPV is $175M using a 5% discount rate. Initial capital expenditure is estimated at $438M. All-in sustaining costs are pegged at 1223.5 USD/oz. Economics are based on US$1,650/oz gold base case (streaming price applied to portion of Froome deposit subject to gold streaming agreement).

Production and mine plan. Life of mine is 12.3 years. Average annual production is approximately 71980 oz Au/year. Average head grade is 4.06 g/t Au (diluted). Metallurgical recovery averages 89.5%.

These figures are extracted from McEwen Mining Inc.'s technical disclosures and reflect the most recent PEA on file. Compare this project against other developers and producers in our project economics database, and always verify the numbers against the original technical report before making any investment decision.

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Our Analysis

NPV after-tax
$175M

higher than 24% of 145 projects we track

Initial capex
$438M

250% of NPV

costlier than 71% of 144 projects we track

Mine life
12.3yrs
Study price assumption
US$1,650/oz gold base case (streaming price applied to portion of Froome deposit subject to gold streaming agreement)
Spot gold today
$4,470.30/oz

Among the 145 gold projects we track, this one's after-tax NPV of $175M ranks above only about a quarter of them. That is the honest starting point: a mid-to-lower-table asset by absolute value, not a hidden standout. The Timmins address in Northeastern Ontario is the offsetting positive. A development-stage gold project in a long-established Canadian mining camp carries permitting, infrastructure and political risk profiles that most of the higher-ranked projects on our list, sitting in harder jurisdictions, do not enjoy. Investors should read the ranking and the jurisdiction together, because they pull in opposite directions.

The constraint that decides this one is funding, and it is stark. Initial capex of $438M is 250% of the NPV the study generates, and roughly 0.3x the company's entire US$1.25B market cap. A build of that size against a small-cap balance sheet cannot be financed quietly: it implies equity issuance, partnering, streaming or debt, each with its own dilution or cash-flow cost. The capex also ranks lower than only 29% of the 144 gold projects we track, so the burden is heavier than most peers carry.

Two further caveats shape how much weight the numbers deserve. This is a PEA, scoping-level, potentially built on inferred material, with a capital estimate that typically carries a plus or minus 50% band, so the $438M could move materially. And the study's US$1,650/oz base case sits far below today's $4,470.30/oz spot, which means the headline economics may understate what a higher price deck would deliver, though the streaming arrangement applies to a portion of the Froome deposit. The question that settles it: can this company fund $438M without gutting the equity case?

Our take, benchmarked against the project economics in the Mining Stocks database. Figures are estimates drawn from company technical reports — not investment advice; always verify against the source filing.

View the source filing from
McEwen Mining Inc.
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