Coimolache Mine Feasibility Study: $5M NPV Over a 5-Year Mine Life
Compania de Minas Buenaventura S.A.A.'s Coimolache Mine in Peru has a Feasibility Study outlining an after-tax NPV of $5M. The proposed mine plan runs 5 years.
Compania de Minas Buenaventura S.A.A.'s Coimolache Mine has reported Feasibility Study results for the gold, silver project in Peru. The study headlines an after-tax net present value of $5M at a 7.94% discount rate. It reflects Compania de Minas Buenaventura S.A.A.'s (BVN) latest disclosed economics for the asset.
Economics. The after-tax NPV is $5M using a 7.94% discount rate. Economics are based on LOM average realized gold price of US$1,793/oz Au and silver price of US$22.90/oz Ag.
Production and mine plan. The project envisions an open-pit operation. Life of mine is 5 years. Average head grade is 0.28 g/t Au and 9.61 g/t Ag. The open-pit strip ratio is 0.6.
Resources and ownership. The company holds a 100% interest in the project.
These figures are extracted from Compania de Minas Buenaventura S.A.A.'s technical disclosures and reflect the most recent Feasibility Study 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 |
|---|---|---|---|
| Probable | 43,692 kt | 0.28 g/t Au, 9.61 g/t Ag | 396 koz Au, 13,500 koz Ag |
| Proven + Probable | 43,692 kt | 0.28 g/t Au, 9.61 g/t Ag | 396 koz Au, 13,500 koz Ag |
| Category | Tonnage | Grade | Contained |
|---|---|---|---|
| Indicated | 25,513 kt | 0.25 g/t Au, 13.6 g/t Ag | 208.6 koz Au, 11,145 koz Ag |
| Measured & Indicated | 25,513 kt | 0.25 g/t Au, 13.6 g/t Ag | 208.6 koz Au, 11,145 koz Ag |
| Inferred | 17,370 kt | 0.23 g/t Au, 11.8 g/t Ag | 126.3 koz Au, 6,588 koz Ag |
Our Analysis
- NPV after-tax
- $5M
higher than 1% of 360 projects we track
- Mine life
- 5yrs
- Study price assumption
- LOM average realized gold price of US$1,793/oz Au and silver price of US$22.90/oz Ag
A five-year mine life places this asset at the shallow end of the durability spectrum, and the economics reflect that brevity. The after-tax NPV of $5M ranks higher than only 1% of the 360 projects we track, which puts this squarely in the bottom tier of our coverage. That rank is not a rounding error; it signals a project whose entire value proposition is compressed into a short production window, leaving little margin for operational slippage or price weakness. For an investor, this is a tactical, cash-returning asset rather than a platform for long-term growth.
The feasibility study designation is the one genuine positive here. At a build-ready estimate with a typical plus or minus 15% band, the numbers carry real weight, and the project is already in production, which removes the permitting and construction risk that dominates earlier-stage peers. But the constraint that matters most is scale relative to the company itself. This is one of 16 projects we track for this operator, a diversified portfolio where a single $5M NPV asset is a minor contributor. The financing hurdle is therefore less about debt capacity and more about corporate prioritization: can this small, short-life project command the attention and capital it needs within a larger pipeline?
Peru is a mining-friendly jurisdiction, which supports the feasibility-level confidence, but the study's price assumptions deserve scrutiny as a sensitivity. The LOM average realized gold price of US$1,793/oz Au and silver price of US$22.90/oz Ag are fixed inputs; if realized prices soften against those levels, the already-thin NPV erodes quickly. The decisive question is not whether this project works on paper, it does at feasibility grade, but whether a five-year, bottom-quartile return justifies the operational overhead within a 16-project portfolio. That is the call an investor must make.
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.