Greenstone Gold – On Budget and on Schedule

Greenstone Gold
Greenstone Gold - Stock Image

Vancouver, British Columbia – Business – Equinox Gold Corp. (TSX: EQX) (NYSE American: EQX) is pleased to provide an update on construction progress at its Greenstone Project in Ontario, Canada. The Greenstone Project is being developed as a 60/40 partnership, respectively, by Equinox Gold and Orion Mine Finance Group and will be one of the largest gold mines in Canada, with average annual gold production of more than 400,000 ounces over the first five years and more than five million ounces of gold over its initial 14-year mine life.

Greenstone Project construction progress is documented weekly in a photo gallery on Equinox Gold’s website at www.equinoxgold.comand select photos are included in this news release.

Recent Highlights (at July 21, 2023 unless otherwise noted)

  • Schedule – The Greenstone Project is 85% complete. A third independent quantitative risk assessment completed in Q2 2023 concluded that the Greenstone Project remains on schedule to pour gold in the first half of 2024.
  • Budget – The Greenstone Project remains on track for a total spend of $1.23 billion. At June 30, 2023, $937 million (76%) of the budget had been spent (100% basis) with approximately $170 million remaining for Equinox Gold’s share to fund through to project completion.
  • Facilities completed – With construction of the following facilities completed, the operations team has assumed responsibility for the permanent effluent water treatment plant, truck shop, warehouse, sewage treatment plant, potable water treatment plant, pit and plant site fuel stations, reagent storage, and site mixed emulsion (explosives) plant. The new Ministry of Transportation patrol yard was turned over to the Ministry and dismantling of the old patrol yard is complete. The natural gas pipeline to site has been commissioned and is operational.
  • Construction progress – All major equipment is now on site. Mechanical installations are 75% complete and electrical and piping installations are both 67% complete. Power plant construction is complete and pre-commissioning commenced in Q2 2023. The Highway 11 relocation is substantially complete and ahead of schedule, with handover planned for Q3 2023. With all auxiliary facilities now handed over to operations, the remaining construction effort is focused on completion of the process plant and tailings storage facility.
  • Pre-production mining – The first two Epiroc Pit Viper 235 drill rigs and the eighth CAT 793F haul truck were commissioned during the quarter. Mine pre-production activities have been operating 24/7 since Q4 2022, with more than 10.6 million tonnes of material moved to date. The current priority for mined material continues to be supplying waste rock for the tailings storage facility and other construction activities. Mining of ore for the commissioning stockpile is expected to commence in Q4 2023.
  • Commissioning and operational readiness – The commissioning team and commissioning plans are in place and operational readiness activities are underway.

Greg Smith, President & CEO of Equinox Gold, commented: “The Greenstone Project continues to advance on budget and on schedule. With most ancillary facilities complete and transferred to the operations team and construction activities 83% complete, our focus is shifting toward commissioning and operational readiness as we advance to construction completion and first gold pour in the first half of 2024, and then achieving commercial production.”

Results of Independent Quantitative Risk Assessment

Valency Inc., a global provider of construction project assurance solutions and quantitative risk assessments, completed the Greenstone Project’s second quantitative risk assessment (“QRA”) during Q2 2023. The QRA concluded that the schedule and budget remain achievable, and the Greenstone Project remains on track to pour gold in the first half of 2024.

An update on Greenstone 2024 operating costs and production estimates will be reported in connection with the Company’s annual production and cost guidance in Q1 2024.

Greenstone Project Progress

Area Progress to Date (at July 21, 2023 unless otherwise noted)
Total Overall Progress
  • Overall project 85% complete and on schedule to pour gold in the first half of 2024
    • Detailed engineering complete
    • Procurement 87% complete
    • Construction 83% complete
  • Plant site earthworks 97% complete, concrete 93% complete, structural steel 89% complete, mechanical installations 75% complete, piping installations 67% complete, electrical installations 67% complete
  • Strong health and safety performance with project-to-date Total Recordable Injury Frequency Rate1 at June 30, 2023 of 3.19 per million hours worked
  • Project remains on budget. At June 30, 2023:
    • 76% of total cost spent ($937 M)
    • All purchase order and construction contracts for project completion in place
    • Inflationary pressures have been mitigated through favourable exchange rates and offsetting savings opportunities, or absorbed through the $177 million contingency included in the construction budget
Process Plant
  • Process plant construction 75% complete
  • All major equipment delivered to site
  • Installation of various crushing and grinding equipment is advanced, including work on the ball mills and high pressure grinding rolls (HPGR). Crusher retaining wall complete
  • Four of the six conveyors erected with the other two in process
  • Structures completed in the gravity tower, acid wash, elution and carbon regeneration areas. Gold room concrete block walls completed with most electrical and mechanical equipment in place
  • A significant number of subsystems in the process plant will be mechanically complete by the end of Q3 2023
Tailings Facility and Water Management
  • Tailings storage facility 80% complete with dams in the East and Southeast areas at the target elevation of 337.0 metres
  • Tailings and reclaim piping and pipeline corridor installation underway
Power Plant and Electrical
  • Pre-commissioning activities underway; on track to be commissioned in Q3 2023
  • Natural gas pipeline to site complete and operational
Site Infrastructure
  • Truck shop, warehouse, administration office, pit and plant site fuel stations, sewage treatment plant, potable water treatment plant, site mixed emulsion (explosives) plant, and reagent cold storage buildings complete and operational
Mobile Equipment and Mining
  • Mine pre-production activities operating 24/7 and in line with plan, with more than 10.6 million tonnes of material moved to date
  • Eight CAT 793F trucks, two Epiroc D65 drills, two Epiroc Pit Viper 235 drill, one Komatsu PC5500 shovel and two Komatsu D375A-8 bulldozers on site
Infrastructure Repositioning
  • Highway 11 relocation ahead of schedule and near complete
  • Earthworks underway for the new Hydro One Geraldton Operating Centre; completion targeted for Q1 2024. Planning for the Substation relocation in 2024 underway
Commissioning and Operational Readiness
  • Commissioning team in place; managing power plant commissioning and preparing for process plant commissioning activities to begin in Q4 2023
  • Plant operational readiness activities are focused on hiring, procedures, systems implementation, procurement activities to support start up, and training
  • Recruitment on track with over 200 operations personnel hired to date
  • Capital spares purchases complete, ordering of operating spares well advanced


1 Total Recordable Injury Frequency Rate is the total number of injuries excluding those requiring simple first aid treatment.

Remaining Project Milestones

Important construction milestones include:

  • Process plant steel erection underway: June 2022
  • Administration building complete: July 2022
  • Delivery and assembly of pre-production fleet of four trucks and excavators: Q2-Q3 2022
  • Permanent water effluent treatment plant ready for use: Q3 2022
  • Commence installation of gensets in power plant, power building enclosed: Q3 2022
  • Start of pre-production mining: Q3 2022
  • All main buildings enclosed: Q1 2023
  • Leach tanks installed: Q4 2022
  • Ball mills received and installed: Q1-Q3 2023
  • Highway 11 realignment complete: August 2023
  • Crushers installed: Q3 2023
  • Commence pre-commissioning of crushing circuit: Q4 2023
  • Power plant operational: Q4 2023
  • Tailing storage facility complete and ready for use: Q4 2023
  • Commissioning: Q1-Q2 2024
  • Gold pour: H1 2024
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