Porvenir (Nicaragua) PFS: $460M NPV, 37.9% IRR
Mineros S.A.'s Porvenir (Nicaragua) in Nicaragua (Hemco Property, Región Autónoma de la Costa Caribe Norte) has a Pre-Feasibility Study (PFS) outlining an after-tax NPV of $460M, an after-tax IRR of 37.9%, and initial capital of $207M. The mine plan runs 10 years at about 72.3 koz AuEq per year.
Mineros S.A.'s Porvenir (Nicaragua) has reported Pre-Feasibility Study (PFS) results for the gold/polymetallic (au, ag, zn, cu) project in Nicaragua (Hemco Property, Región Autónoma de la Costa Caribe Norte). The study headlines an after-tax net present value of $460M at a 5% discount rate. It reflects Mineros S.A.'s (MSA.TO) latest disclosed economics for the asset.
Economics. The after-tax NPV is $460M using a 5% discount rate. After-tax IRR is 37.9%. Initial capital expenditure is estimated at $207M. The study models a payback period of 2 years. All-in sustaining costs are pegged at 1295 USD/oz AuEq. Economics are based on US$3,150/oz Au, US$45.00/oz Ag, US$1.22/lb Zn, US$4.72/lb Cu (long-term metals prices; AuEq calculated using these).
Production and mine plan. The project envisions an underground operation. Life of mine is 10 years. Average annual production is approximately 72.3 koz AuEq.
These figures are extracted from Mineros S.A.'s technical disclosures and reflect the most recent PFS 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.
Reserves & Resources
| Category | Tonnage | Grade | Contained |
|---|---|---|---|
| Proven & Probable | — | — | 736 AuEq koz |
| Category | Tonnage | Grade | Contained |
|---|---|---|---|
| Measured & Indicated | — | — | 233 AuEq koz |
Our Analysis
- IRR after-tax
- 37.9%
higher than 64% of 329 projects we track
- NPV after-tax
- $460M
higher than 45% of 428 projects we track
- Initial capex
- $207M
45% of NPV
costlier than 46% of 421 projects we track
- Payback
- 2yrs
slower than 35% of 264 projects we track
- Mine life
- 10yrs
- Discount rate
- 5%
- Study price assumption
- US$3,150/oz Au, US$45.00/oz Ag, US$1.22/lb Zn, US$4.72/lb Cu (long-term metals prices; AuEq calculated using these)
The 37.9% after-tax IRR ranks in the upper half of the 329 projects we track, and the 2-year payback is faster than 65% of its peers. Those are solid, not spectacular, numbers. The more telling figure is the NPV: at $460M, it sits below the median of the 428 projects we track, even though the study uses a 5% discount rate, the low end of convention. That gap between a strong IRR and a middling NPV is the fingerprint of a short, capital-light mine: it pays back quickly but does not build a large resource of value. For an investor, this is a cash-return story, not a reserve-growth story.
The constraint that matters most is confidence, not capital. This is a PFS, which narrows estimates to roughly plus or minus 25%, but it is not a build decision. The initial capex of $207M is only 45% of NPV and about 0.1x the company's US$1.65B market cap, so funding is not the hurdle. A diversified 13-project portfolio backs this asset, and the build cost is small relative to the company's size, which removes the dilution risk that typically punishes single-asset developers. The jurisdiction, Nicaragua's autonomous Caribbean coast region, carries a risk premium that the study's numbers do not quantify, and that premium is the real unknown here.
The study's price deck, US$3,150/oz Au with by-product credits for Ag, Zn, and Cu, is the key sensitivity. If those long-term assumptions hold, the economics are sound but unremarkable. The single question that decides whether this works is whether the PFS-level confidence in the resource and the metallurgy survives the transition to feasibility. A 10-year mine life leaves little room for error in grade or recovery, and the by-product contribution from a polymetallic orebody adds complexity that a simple gold project would avoid. That, not the IRR, is where this project will be won or lost.
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.