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High materiality9/10

i-80 Gold's Granite Creek FS validates higher-grade, longer-life asset with Lone Tree synergies

Sep 22, 2026, 1:48 AM EDT1 sourcesAI-analyzed

Why it may matterVerify against the original reporting

Positive economics, robust ore grades, and a clear path to higher production with cost synergies from Lone Tree; sensitivity to gold price implies upside in bull markets but downside if prices fall.

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What happened, with direct paths to the underlying reporting

i-80 Gold's Granite Creek Underground feasibility study shows expanded resources, stronger economics, and an 8.5-year mine life. The plan leverages the Lone Tree autoclave/CIL plant, with third-party processing until late 2027, and targets ~75,000 oz/year from 2028–2032, signaling meaningful Nevada growth and potential free-cash-flow upside as gold prices rise.

Granite Creek Underground FS shows robust economics and longer mine life.
Base-case NPV $118M at $2,750/oz; higher prices boost to $598-985M.
LOM about 8.5 years; ~75k oz/year 2028-2032; Lone Tree by 2027.
CX Zone high-grade targets could add ounces in 2027+ drill program.
2026 infill/step-out drilling expands resources and converts resource to reserves.

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