Mayfair Gold is targeting initial production at its Fenn-Gib project in Northern Ontario in 2030, but that date is a company goal—not a committed start date. Its 2026 pre-feasibility study (PFS) outlines a 4,800-tonne-per-day open-pit operation with a modular plant and an estimated C$450 million in initial development capital. Engineering, environmental work, permitting preparation, infrastructure planning and financing discussions were still advancing in the company’s latest project update, dated July 23, 2026.
What the Fenn-Gib plan proposes
Fenn-Gib is a development-stage gold project in the Timmins region of Northern Ontario. Mayfair’s January 8, 2026 PFS, effective December 19, 2025, describes a conventional truck-and-shovel open pit feeding a modular processing plant. The study estimates a main construction period of 18–24 months, excluding early works; this is a study estimate, not a construction schedule commitment. Mayfair’s PFS announcement sets out the plan and estimates.
- Planned throughput: 4,800 tonnes per day.
- Estimated initial development capital: C$450 million.
- Estimated main construction: 18–24 months, excluding early works.
How much gold the study forecasts
The PFS mine plan contains 1.04 million ounces of gold, which Mayfair describes as 24% of its 4.3 million-ounce indicated resource. That distinction matters: a mineral resource is not automatically a mineral reserve or scheduled production. The mine plan is a defined first stage, not a production schedule for the full resource.
| Measure | PFS figure |
|---|---|
| Average annual production in the first six operating years | 71,336 ounces |
| Total life-of-mine production forecast | 920,000 ounces over 14.3 years |
| Gold in the mine plan | 1.04 million ounces, or 24% of the 4.3 million-ounce indicated resource |
These are PFS forecasts, not realized output. The larger indicated resource does not by itself establish that additional ounces will be mined; any expansion would need its own defined mine plan and supporting work. The company’s Fenn-Gib project page describes the project.
#1 Best Overall
What the PFS economics assume
The study’s base case assumes a gold price of US$3,100 per ounce and an exchange rate of C$1.35 per US$1. On those assumptions, Mayfair reports an after-tax net present value at a 5% discount rate (NPV(5%)) of C$652 million, an internal rate of return (IRR) of 24%, a 2.7-year payback period and C$896 million in cumulative free cash flow during years one through six. These are projections based on study assumptions, not guaranteed returns or realized financial results.
Gold prices, exchange rates, costs and production can differ from the PFS inputs, so its economics should be read as a scenario rather than a forecast of investor returns. The study also presents a spot-price sensitivity case, but that is a separate scenario—not the base case.
Rank #2
- Ideal for Gifting
- Ideal for a bookworm
- Compact for travelling
What “streamlined” means—and what it does not
Mayfair says it intends to use Ontario’s Provincial Class Environmental Assessment process and states that, under current regulations, the project does not trigger a Comprehensive Environmental Assessment or a federal Impact Assessment. The company’s stated pathway is not proof that approvals are complete, and it does not guarantee that requirements will remain unchanged. The modular plant design is presented as a way to simplify the construction schedule, not as a substitute for permitting or execution.
The company has described a parallel approach involving Ontario-led environmental approvals, Indigenous agreements, and engineering, design and procurement. It has cited major construction within 24–36 months and commercial operations within five years as targets. These are separate forward-looking targets; neither changes the status of the 2030 initial-production goal. The PFS and permitting approach are described in Mayfair’s study announcement.
Project status and the route to 2030
In its July 23, 2026 Q2 project update, Mayfair said it was advancing front-end engineering design (FEED), with Ausenco leading plant engineering, and working on the layout for the planned 4,800-tonne-per-day plant. It also reported continued environmental baseline studies, preparation of its Ontario One Project, One Process submission, power and site-access planning, and engagement with potential project-financing parties. These activities show work in progress, not completed approvals or a construction decision. The Q2 project update also listed planned Q3 work: completing plant FEED, tendering detailed engineering, advancing approval submissions and financing discussions, and refining earthworks, tailings-storage and water-management designs. The update describes plans; it does not establish that those later steps were completed.
The same July update reported completion of a 56-hole, 4,200-metre grade-control drilling program, with results finalized in Q2. Mayfair said results supported confidence in the reserve model for the tested starter-pit area and suggested potential for more higher-grade material there. That interpretation is limited to the area tested and is the company’s assessment, not a conclusion about the entire deposit.
Rank #4
Mayfair’s April 27, 2026 Q1 update said it had submitted a Notice of Project Status and was awaiting Ministry guidance, and had awarded the environmental assessment and permitting mandate to Egis Canada. Its August 12, 2026 Q2 operating and financial results repeated the company’s goal of starting construction in 2028 and initial production in 2030. The latest cited project update does not establish that final approvals have been received or that construction has been authorized. For project timing and risks, see the company’s Q2 operating and financial results.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What could affect the schedule
The gap between a PFS and production includes regulatory, engineering, financing and construction steps. Mayfair cautions that forward-looking information is subject to risks, uncertainties and other factors that could cause actual events or results to differ materially from expectations. The stated 2030 date should therefore be treated as a target, not a promise. Readers can review the company’s forward-looking statements and risk disclosure alongside its project updates.
Quick Recap
Best Value
- It can be a gift option
- Comes with secure packaging
- Helpful in various ways
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
