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GOLDPEAPROJECT ECONOMICS

San Antonio Project PEA: $131M Capex Over a 14-Year Mine Life

ByMining Stocks Research
Jun 14, 2026
Source:Heliostar Metals Ltd.
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Heliostar Metals Ltd.'s San Antonio Project in Baja California Sur, Mexico has a Preliminary Economic Assessment (PEA) outlining initial capital of $131M. The mine plan runs 14 years at about 80 koz/yr per year.

Heliostar Metals Ltd.'s San Antonio Project has reported Preliminary Economic Assessment (PEA) results for the gold project in Baja California Sur, Mexico. It reflects Heliostar Metals Ltd.'s (HSTR.V) latest disclosed economics for the asset.

Economics. Initial capital expenditure is estimated at $131M. All-in sustaining costs are pegged at 1063 USD/oz.

Production and mine plan. The project envisions an open pit, heap leach operation. Life of mine is 14 years. Average annual production is approximately 80 koz/yr. Average head grade is 1.0 g/t gold.

Resources and ownership. Mineral resources: M&I: 1,741 koz Au (55,522 kt @ 0.98 g/t Au); Inferred: 184 koz Au (14,957 kt @ 0.38 g/t Au). The company holds a 100% interest in the project. Royalties and streams: 0%.

These figures are extracted from Heliostar Metals Ltd.'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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