# i-80 Gold Declares First Granite Creek Reserve, Lone Tree Refurbishment Anchors Phased Production Growth Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/i-80-gold-declares-first-granite-creek-reserve-lone-tree-refurbishment-anchors-p--128a2153-db90-4dbf-a57c-6bba54c5ccd5 Original source: https://www.cruxinvestor.com/posts/i-80-gold-declares-first-granite-creek-reserve-lone-tree-refurbishment-anchors-phased-production-growth Publisher: cruxinvestor Original announcement: 2026-10-02T00:00:00.000Z Analysis by Minestarters Atlas Atlas analysis published: 2026-10-02T16:32:13.480Z Atlas analysis updated: 2026-10-02T16:32:13.480Z - Company: i-80 Gold Corp. - Ticker: IAU - Exchange: Unavailable - Region: Nevada - Primary commodity: Gold - Secondary commodities: Silver - Document categories: Resource update, Other - Extracted: 2026-10-02 16:32:14 UTC Narrative sentiment: 0.80 · Bullish ## Minestarters Atlas summary i-80 Gold has declared its first reserve at the Granite Creek Underground project, totaling 557,000 oz at 7.87 g/t gold. The company is also advancing the refurbishment of its Lone Tree autoclave to improve processing recoveries and targeting significant growth through the Mineral Point project. Reasoning: The declaration of the first reserve at Granite Creek is a major de-risking milestone for the company's transition to a mid-tier producer. - Positive factor: First reserve declaration for Granite Creek Underground - Positive factor: High grade of 7.87 g/t gold - Positive factor: Strong NPV of $118 million - Positive factor: Strategic autoclave refurbishment to improve recoveries - Negative factor: Aggressive permitting timeline at Mineral Point - Negative factor: Labour cost pressure at Lone Tree Facts used in scoring: 1 ## Classification and evidence **Probable Reserve** Polarity: positive Definition: Indicated Resource with demonstrated economic viability after applying modifying factors. Why it applies: The document declares an initial proven and probable reserve for Granite Creek Underground. Evidence · text > converted part of Granite Creek's resource into an initial proven and probable reserve **Maiden Resource** Polarity: neutral Definition: First formal MRE for the project — establishes baseline but typically exploration-stage with high Inferred component. Why it applies: This is the first reserve declaration for the Granite Creek Underground project. Evidence · text > Declares First Granite Creek Reserve ## Extracted facts Stored fact records: 1. Some facts used in scoring do not have a stored record. ## Resource Estimates (1) ### probable [Link to this fact](https://atlas-staging.minestarters.com/news/i-80-gold-declares-first-granite-creek-reserve-lone-tree-refurbishment-anchors-p--128a2153-db90-4dbf-a57c-6bba54c5ccd5#fact-resource-facts-0) Granite Creek Underground · gold #### Identity - Project: Granite Creek Underground - Commodity: gold - Region: usa\_nv - Reported Region: Nevada - Ticker: IAU #### Resource scope - Estimate type: reserve - Resource group id: resource:f00af6e162418af965f5 - Deposit or zone: Granite Creek Underground - Mining method: combined #### Resource Data - Category: probable - Grade: 7.87 - Grade Unit: g/t - Contained Metal: 557000 - Contained Unit: oz #### Prior Estimate - Resource Date: 2026-09-01 #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-02T00:00:00.000Z Reasoning: Initial reserve declaration at high grade. - Positive factor: First reserve declaration - Positive factor: High grade Evidence · text > The September 2026 feasibility study converted part of Granite Creek's resource into an initial proven and probable reserve of 557,000 oz at 7.87 g/t gold. #### Tags used in scoring **Probable Reserve** Polarity: positive Definition: Indicated Resource with demonstrated economic viability after applying modifying factors. Why it applies: category is "probable" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **No QP/CP Disclosure** Polarity: negative Definition: No Qualified Person or Competent Person named — lower credibility for the estimate. A QP/CP should be a member of a recognized professional association with relevant experience. Why it applies: no Qualified or Competent Person is named anywhere in the release **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ## How Atlas produces this analysis Minestarters Atlas uses automated extraction to summarize mining announcements, identify reported measurements, and classify supporting evidence. Sentiment reflects the extracted narrative and classification rules; it is an interpretation, not a reported measurement. Evidence quotes and context are provided where available. Missing data, low-confidence results, and review flags indicate limitations. Check the original publisher announcement before relying on an interpretation.