i-80 Gold Provides a Development Update; Archimedes Underground and Lone Tree Plant Refurbishment Remain on Track and Mineral Point Open Pit Prioritized in Updated Development Plan
Mineral Point moves ahead of Granite Creek open pit, while Cove underground is sequenced later as future feed for Lone Tree.
Sentiment and the balance of points
Rhea-AI Sentiment reads the wording of the document, how positive or negative its language is on a 1 to 5 scale. The balance of points shown with the takes weighs what the document actually discloses, so the two can disagree, for example when a trial that missed its main goal is described in upbeat language.
Rhea-AI Summary
i-80 Gold (IAUX) prioritized Mineral Point open pit in its updated development plan while keeping near-term Nevada projects on schedule. Archimedes underground remains on track for first gold mined in Q4 2026. Lone Tree construction is planned for Q4 2026, with first gold pour targeted for Q4 2027. Its refurbishment estimate remains $430 million; labor costs are 5%–10% above initial estimates, within contingency.
The company targets annual gold production of 150,000–200,000 ounces beginning in 2028, 400,000–500,000 beginning in 2031 with Mineral Point, and 500,000–600,000 in the early 2030s with Granite Creek open pit. These preliminary goals depend on successful development and Lone Tree commissioning and are not output guidance. Cove underground is sequenced later as future processing feed. Granite Creek's measured and indicated underground resources increased approximately 230% in the September 2026 feasibility study versus the March 2025 PEA.
How this balance works
Rhea-AI gives every point it takes from this document a weight. Minor counts 1, Moderate 3 and Major 9, so one Major point outweighs several Minor ones. The bar adds up the weights on each side, and when neither side holds more than 65% of the total the balance reads Mixed.
It reads the document as published, with the same rules for every company, and it does not look at what the market expected or at how the stock traded, so a point can be objectively good on a day the stock falls.
Rhea-AI Sentiment measures something else, the tone of the wording.
Hollow bars mark forward-looking points. How the balance works
Positive
- Moderate point. Forward-looking: it has not happened yet and may not happen.Archimedes underground remains on schedule for first gold mined in Q4 2026.
- Moderate point. Forward-looking: it has not happened yet and may not happen.Lone Tree refurbishment remains on schedule for construction in Q4 2026 and first gold pour in Q4 2027.
- Moderate point. Forward-looking: it has not happened yet and may not happen.Lone Tree's expected cash-margin increase is $1,000–$1,500 per gold ounce, depending on grade and gold price.
- Moderate pointGranite Creek measured and indicated underground resources rose approximately 230% versus the March 2025 PEA.
- Moderate pointMineral Point is prioritized ahead of Granite Creek open pit as the next development project.
- Moderate point. Forward-looking: it has not happened yet and may not happen.Mineral Point's March 2025 PEA indicates potential annual production of approximately 280,000 gold-equivalent ounces over 17 years.
- Moderate point. Forward-looking: it has not happened yet and may not happen.Annual gold production targets reach 150,000–200,000 ounces from 2028, subject to development and Lone Tree commissioning.
- Moderate point. Forward-looking: it has not happened yet and may not happen.Annual gold production targets reach 400,000–500,000 ounces from 2031 with Mineral Point's addition.
- Moderate point. Forward-looking: it has not happened yet and may not happen.Annual gold production targets reach 500,000–600,000 ounces in the early 2030s with Granite Creek open pit.
- Moderate pointLone Tree bulk demolition was completed in Q3 2026, and construction mobilization has begun.
- Moderate pointLone Tree state permits received by September's end allow contractor mobilization for construction.
6 minor points
- Minor point. Forward-looking: it has not happened yet and may not happen.Archimedes oxide material offers a potential lower-cost heap-leach option relative to Lone Tree processing.
- Minor pointLone Tree procurement packages awarded reached approximately 74% by value at September 2026's end.
- Minor pointLone Tree cash expenditures are trending below 2026 guidance of $140 million–$160 million.
- Minor point. Forward-looking: it has not happened yet and may not happen.Lone Tree expected processing capacity is approximately 2,250 tonnes daily at 85% plant availability.
- Minor point. Forward-looking: it has not happened yet and may not happen.Lone Tree filtration plant completion is targeted for early Q4 2027.
- Minor point. Forward-looking: it has not happened yet and may not happen.Cove underground feasibility study completion is targeted for Q4 2026.
Negative
- Major point. Forward-looking: it has not happened yet and may not happen.Lone Tree refurbishment carries an estimated $430 million capital cost, including approximately 12% contingency, owner's cost and capital spares. 32% of market cap
- Moderate point. Forward-looking: it has not happened yet and may not happen.Cove underground development is sequenced later as future refractory feed for Lone Tree.
- Minor pointLone Tree labor costs are approximately 5%–10% above initial estimates, within allotted contingency.
- Minor pointLone Tree has drawn down approximately 10% of total project contingency to date.
- Minor point. Forward-looking: it has not happened yet and may not happen.Production targets are preliminary goals, not guidance, dependent on successful development and Lone Tree commissioning.
3 minor points
- Minor point. Forward-looking: it has not happened yet and may not happen.Archimedes heap-leach recoveries and viability remain subject to ongoing metallurgical testing.
- Minor point. Forward-looking: it has not happened yet and may not happen.Archimedes feasibility and Mineral Point pre-feasibility studies target approximately mid-2027, pending additional drilling timing.
- Minor pointGranite Creek open pit pre-feasibility study timing is under review.
News Explained
The possible revolving credit facility is not yet in place; i-80 says it is discussing one with lead lenders if additional liquidity is needed.
The company reports bulk demolition at Lone Tree was completed in Q3 2026, with mobilization underway to prepare for initial construction scheduled to start in
For Mineral Point, a pre-feasibility study is targeted for approximately
Separately, i-80 says it is in dialogue with lead lenders to establish a corporate revolving credit facility for additional liquidity if needed; this is a discussion about a possible future source of liquidity, not a facility the release says is in place.
Key Figures
- Initial annual production target
- 150,000–200,000 ounces of gold/year
- Target beginning in 2028
- Mineral Point production potential
- Approximately 280,000 gold equivalent ounces/year
- Based on the related PEA; 17-year mine life
- Lone Tree capital cost estimate
- $430 million
- Includes approximately 12% contingency, owner's cost, and capital spares
- Expected cash margin increase
- $1,000–$1,500 per ounce of gold
- Expected reduction in third-party processing costs at Lone Tree; depends on grade and gold price
- Labor costs versus initial estimates
- 5%–10% above initial estimates
- Within the allotted project contingency
- Consolidated annual production target
- 400,000–500,000 ounces of gold/year
- Target beginning in 2031 with Mineral Point oxide heap-leach production
- Broader annual production target
- 500,000–600,000 ounces of gold/year
- Target in the early 2030s with the subsequent addition of Granite Creek open pit
Historical Context
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Initial Mineral Point drill results included step-outs outside the existing resource; the PEA outlined mine life and production.
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The study reported reserves and a 229% increase in measured and indicated underground resources.
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Refurbishment remained on schedule and budget, with total capital estimated at $430 million.
24h Move is the share-price change in the day after each event; other market factors may also have contributed.
Key Terms
preliminary economic assessment technical
carbon-in-leach technical
integrated pressure oxidation technical
ni 43-101 regulatory
s-k 1300 regulatory
AI-generated analysis. How Rhea-AI works. Not financial advice.
All amounts are expressed in

Development Highlights
- Archimedes underground on track to commence production mining: Development at Archimedes, the Company's second underground mine, continues to advance on schedule toward the start of production mining in the fourth quarter of 2026, as planned.
- Lone Tree Plant refurbishment advances toward initial construction: Bulk demolition activities are complete, and mobilization is underway for initial construction activities to commence in the fourth quarter of 2026, as planned. Capital expenditures remain largely on budget with approximately
10% of the total project contingency drawn down to date. - Exploration upside drives updated development plan: Mineral resource expansion potential at the Granite Creek and Archimedes underground projects support the Company's view that these deposits have the potential to supply sufficient feed to the Lone Tree Plant for longer than previously contemplated, providing flexibility to sequence Cove underground later in the development plan as a future source of refractory feed to the Lone Tree Plant when required.
- Mineral Point open pit prioritized ahead of Granite Creek open pit: Mineral Point is the Company's most valuable project. It hosts a large gold-silver oxide resource and the potential to add annual production of approximately 280,000 gold equivalent ounces over a mine life of 17 years, based on the related preliminary economic assessment ("PEA") filed in March 2025.(1) The updated development plan prioritizes the Mineral Point open pit oxide project to drive the next phase of production growth ahead of the Granite Creek open pit oxide project.
- Oxide mineralization identified within the Archimedes underground 426 zone provides significant low-cost processing opportunity: Ongoing metallurgical test work demonstrates the potential to process this oxide material, which was not included in the related March 2025 PEA, on the Ruby Hill property's existing active heap leach pad, providing a significantly lower cost processing option than assumed in the PEA mine plan.
"We are pleased with the continued progress across our operating and near-term development projects as we continue to achieve each major milestone on schedule," stated Richard Young, President & Chief Executive Officer. "Granite Creek underground is ramping up production, and its measured and indicated mineral resources increased by approximately
Mr. Paul Chawrun, Executive Vice President and Chief Operating Officer added, "Ongoing drilling and technical work continue to reinforce our confidence in the resource expansion potential at Granite Creek and Archimedes underground, and their potential to supply refractory feed to the Lone Tree Plant for longer than previously contemplated. This creates an opportunity to sequence Cove underground later in the development pipeline as a future source of refractory feed and prioritize Mineral Point open pit, our largest growth project, to drive the next stage of production growth. We believe this updated development plan positions us to unlock Mineral Point's substantial value while aligning capital allocation with feed supply and processing capacity. It also continues to support organic growth toward a target of 500,000 to 600,000 ounces of average annual gold production under our broader development plan, and our goal of becoming a mid-tier gold producer in
Project Updates
Archimedes Underground
Archimedes underground continues to advance toward first gold mined in the fourth quarter of 2026. Drilling, resource modelling and metallurgical test work are underway to support the feasibility study targeted for completion in approximately mid-2027, pending the timing of additional drilling.(2)
Consistent with previously reported results, ongoing drilling continues to intersect significant intervals of oxide mineralization outside the mineral resource estimate supporting the March 2025 PEA, highlighting potential upside to the PEA mine plan through anticipated lower overall processing costs driven by the oxide portion of the resource. Building on recommendations in the PEA, the Company is evaluating the potential to process this oxide material on the existing active heap leach facilities on the Ruby Hill property where Archimedes is located. Preliminary work indicates an opportunity to heap leach more oxide material than contemplated in the PEA, potentially reducing processing costs relative to processing through the Lone Tree's carbon-in-leach ("CIL") circuit. Metallurgical test work remains ongoing to establish recoveries and assess the viability of this processing option. Refractory material is expected to be stockpiled ahead of Lone Tree's commissioning. Drilling in the lower 426 and Ruby Deeps zones is also evaluating extensions to the mineralized system and the potential to support a longer-term supply of refractory feed to Lone Tree.
Lone Tree Plant Refurbishment
Once refurbished and commissioned as planned in late 2027, the Lone Tree autoclave and CIL plant ("Lone Tree" or the "Plant") is expected to serve as the centralized processing hub for the Company's three underground gold projects and a key cornerstone asset as the Company transitions from toll milling to an owner-operator processing model. Based on the Company's December 2025 engineering study, the Plant is expected to significantly reduce current third-party processing costs resulting in increased cash margins by between
Bulk demolition was completed in the third quarter of 2026 as planned, and mobilization has begun in preparation for the start of initial construction, with a focus on civil preparation and concrete work. Detailed engineering and procurement continue to advance in line with the construction and commissioning schedule with approximately
Refurbishment timing and costs incurred to date remain in line with the Company's December 2025 engineering study, which included a total capital cost estimate of
The Plant is federally permitted. State level permits have been received on schedule as of the end of September to allow for the mobilization of site contractors to begin construction. The Plant is permitted for the existing operational components in use and the receipt of normal course design and environmental state permits remains on track.
Based on
Updated Development Plan
The Company has updated its development plan to align the Plant feed supply, processing capacity, and capital allocation. Within the updated pipeline of projects, the Company's operating and near-term development projects remain on the initial schedule to create a hub-and-spoke mining and processing platform around Lone Tree, while the sequence of medium-to-long term projects has been updated as follows:
1) Establish hub-and-spoke mining and processing platform: Ramp up Granite Creek underground, bring Archimedes underground into production, and refurbish and commission the Lone Tree Plant as a centralized processing facility.
2) Prioritize Mineral Point open pit as the next major development project: Adds a large-scale open pit heap leach project.
3) Advance remaining growth projects: Develop and construct Granite Creek open pit after Mineral Point enters production with Cove underground sequenced later as future refractory feed to Lone Tree.
The September 2026 Granite Creek feasibility study reported an increase in measured and indicated underground mineral resources by approximately
This revised sequence of development projects provides an opportunity for the Company to prioritize the Mineral Point open pit project, the Company's largest and most valuable asset. Granite Creek open pit is expected to be constructed once Mineral Point is in operation. Cove underground remains an important source of future feed for Lone Tree when future mining rates decline at the first two underground mines.
Currently, the anticipated timing of Mineral Point development has not changed from the March 2025 PEA. The exploration program, early-stage pre-permitting activities, technical studies, metallurgical test work, and engineering are ongoing and continue to improve the Company's understanding of the deposit to support future project planning.
The updated development plan targets annual gold production of 150,000 to 200,000 ounces beginning in 2028, supported by the Lone Tree Plant processing material from Granite Creek underground and Archimedes underground.(1) With the addition of oxide heap leach production from Mineral Point open pit, consolidated annual gold production is targeted to increase to 400,000 to 500,000 ounces beginning in 2031.(1) The broader development plan targets 500,000 to 600,000 ounces in annual gold production in the early 2030's with the subsequent addition of Granite Creek open pit.(1) Cove underground expected to sustain this production level by supplying refractory feed to Lone Tree as production from Granite Creek underground and Archimedes underground declines.
Mineral Point Open Pit
Mineral Point is the Company's largest development project by mineral resource, estimated valuation and anticipated annual production, and represents a key driver of anticipated future production growth for the Company. It hosts one of the largest undeveloped bulk-mineable oxide gold-silver resources in
Analyst Site Tour
i-80 Gold will host an analyst site tour on October 14-15, 2026, providing an opportunity for a firsthand look at the significant progress across the Company's
Upcoming Milestones
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Lone Tree Plant Refurbishment |
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Commence construction |
Q4 2026 |
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Completion of filtration plant |
Early Q4 2027 |
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First gold pour |
Q4 2027 |
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Archimedes Underground |
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First gold mined |
Q4 2026 |
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Technical Studies(2) |
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Cove underground (Feasibility) |
Q4 2026 |
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Archimedes underground (Feasibility) |
Approx. mid-2027 |
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Mineral Point open pit (Pre-Feasibility) |
Approx. mid-2027 |
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Granite Creek open pit (Pre-Feasibility) |
Timing under review |
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Endnotes
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(1) |
Based on gold output estimates in the most recent life of mine gold output schedules disclosed in the latest technical studies filed for each respective project and related property: Granite Creek underground, Archimedes underground, Cove underground, and Mineral Point open pit. These anticipated output figures are preliminary in nature and are largely based on mineral resources, which do not have demonstrated economic viability and subject to successful project development. Only Granite Creek underground has declared mineral reserves. In addition, for all gold projects except Granite Creek underground, the foregoing technical reports are preliminary economic assessments/initial assessments that are preliminary in nature. The Granite Creek underground technical report was a feasibility study/technical report summary. Each include an economic analysis that is based, in part, on inferred mineral resources. Inferred mineral resources are considered too speculative geologically to have for the application of economic considerations applied to them that would enable them to be categorized as mineral reserves. As such, there is no certainty that the output targets will be realized. Anticipated output targets are also pending the commissioning of the Lone Tree Plant, and are Company goals and not a projection of results and should not be taken as output guidance. All of the Company's projects other than Granite Creek underground are considered exploration stage projects under S-K 1300, as the Company has not determined mineral reserves at such properties pursuant to S-K 1300. With respect to Archimedes underground, located on the Ruby Hill property, the Company has started extraction activities without determining mineral reserves. The following technical reports for each project and related property have been prepared in accordance with NI 43-101: Preliminary Economic Assessment Technical Report for the Cove Project, |
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(2) |
This technical report was, or will be, prepared under both: National Instrument 43-101 – Standards of Disclosure for Mineral Projects which, in the opinion of the qualified persons, constitutes a feasibility study; and Subpart 1300 of Regulation S-K which, in the opinion of the qualified persons, constitutes a pre-feasibility study. |
Technical Disclosure and Qualified Person
The technical information contained in this press release has been prepared under the supervision of, and has been reviewed and approved by Paul Chawrun P.Eng., Executive Vice President & Chief Operating Officer, for the Company, who is a qualified person within the meaning of National Instrument 43-101 - Standards of Disclosure for Mineral Projects ("NI 43-101") and S-K 1300. Mr. Chawrun has verified the scientific and technical information disclosed in this press release.
About i-80 Gold Corp.
i-80 Gold Corp. is a Nevada-focused mining company committed to building a mid-tier gold producer through a funded development plan to advance its high-quality asset portfolio. The Company is one of the largest mineral resource holders in the state with a pipeline of high-grade multi-stage projects strategically located in Nevada's most prolific gold-producing trends. Leveraging its central processing facility following an anticipated refurbishment, i-80 Gold is executing a hub-and-spoke regional mining and processing strategy to maximize efficiency and growth. i-80 Gold's shares are listed on the NYSE American (NYSE: IAUX) and the Toronto Stock Exchange (TSX: IAU). For more information, visit www.i80gold.com.
Cautionary Statement Regarding Forward-Looking Information
Certain information set forth in this press release, including but not limited to management's assessment of the Company's future plans and operations, expectations regarding the expectations regarding permitting, construction, engineering, procurement, capital costs, commissioning and first gold pour at Lone Tree as anticipated, the benefit of transitioning from toll milling to an owner-operator hub-and-spoke processing model, including reduced processing costs and an estimated margin increase of approximately
This release also contains references to estimates of mineral resources. The estimation of mineral resources is inherently uncertain and involves subjective judgments about many relevant factors. Mineral resources that are not mineral reserves do not have demonstrated economic viability. The accuracy of any such estimates is a function of the quantity and quality of available data, and of the assumptions made and judgments used in engineering and geological interpretation (including estimated future production from the Project, the anticipated tonnages and grades that will be mined and the estimated level of recovery that will be realized), which may prove to be unreliable and depend, to a certain extent, upon the analysis of drilling results and statistical inferences that may ultimately prove to be inaccurate. Mineral resource estimates may have to be re-estimated based on: (i) fluctuations in commodities prices; (ii) results of drilling, (iii) metallurgical testing and other studies; (iv) proposed mining operations, including dilution; (v) the evaluation of mine plans subsequent to the date of any estimates; and (vi) the possible failure to receive required permits, approvals and licenses or changes to existing mining licenses.
Cautionary Note to U.S. Investors
The Company prepares its disclosure in accordance with the requirements of securities laws in effect in Canada, including NI 43-101. NI 43-101 and the U.S. Securities and Exchange Commission's ("SEC") Regulation S-K 1300 have similar goals but at times embody different approaches and definitions. Accordingly, scientific and technical information contained in this press release, including any references to mineral resources, may not be comparable to similar information disclosed by U.S. companies subject to the SEC's disclosure requirements. Mineral resources that are not mineral reserves do not have demonstrated economic viability, and U.S. investors are cautioned not to assume that all or any part of the mineral resources referenced herein will be converted into mineral reserves.
Please see "Risks Factors" in the Form 10-K for the fiscal year ended December 31, 2025, as updated by the Company's quarterly reports on Form 10-Q and current reports on Form 8-K,for more information regarding risks pertaining to the Company, which is available on EDGAR at www.sec.gov/edgar and SEDAR+ at www.sedarplus.ca. Readers are encouraged to carefully review these risk factors as well as the Company's other filings with the SEC and the Canadian Securities Administrators. All forward-looking statements contained in this press release speak only as of the date of this press release or as of the dates specified in such statements. The Company disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise except as required by applicable law. Additional information relating to i-80 Gold can be found on i-80 Gold's website at www.i80gold.com, SEDAR+ at www.sedarplus.ca, and on EDGAR at www.sec.gov/edgar. The information included on, or accessible through, the Company's website is not incorporated by reference into this press release.
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SOURCE i-80 Gold Corp
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
When does i-80 Gold expect Archimedes mining and Lone Tree's first gold pour?
Archimedes underground remains on track for first gold mined in Q4 2026, while Lone Tree's first gold pour is targeted for Q4 2027. Initial Lone Tree construction is planned for Q4 2026, and filtration plant completion is targeted for early Q4 2027.
What annual gold production does i-80 Gold target under its updated development plan?
i-80 Gold targets 150,000–200,000 ounces beginning in 2028, 400,000–500,000 beginning in 2031, and 500,000–600,000 in the early 2030s. Mineral Point supports the second stage, followed by Granite Creek open pit. These preliminary goals depend on successful development and Lone Tree commissioning and are not output guidance.
How is i-80 Gold considering additional funding for Mineral Point?
i-80 Gold is discussing a corporate revolving credit facility with its lead lenders to provide additional liquidity for Mineral Point's development scope, if needed. The facility is under discussion rather than established.
What will happen to Archimedes refractory material before Lone Tree starts operating?
Archimedes refractory material is expected to be stockpiled ahead of Lone Tree's commissioning. Separately, ongoing metallurgical testing is assessing whether oxide material can be processed on Ruby Hill's existing active heap-leach facilities.