Greenstone Mine Project

Greenstone Gold Mines is proposing the construction, operation, decommissioning, and abandonment of an open-pit gold mine and on-site metal mill located approximately five kilometres south of Geraldton, Ontario, at the intersection of Highway 11 (Trans-Canada Highway) and Michael Power Boulevard. As proposed, the gold mine would have an ore production capacity of 30,000 tonnes per day, and the metal mill would have an ore input capacity of 30,000 tonnes per day.

Please note that this project was formerly known as the Hardrock Deposit Project and the Hardrock Gold Mine Project.

Please note that the proponent was formerly known as Premier Gold Mines Hardrock Inc.

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Latest update

June 25, 2025  — An update has been made to the Decision Statement. The President of the Impact Assessment Agency of Canada has provided his decision on these updates to the proponent.

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Key documents

Key documents
Document Number Document Title File Date
70 Updated Decision Statement PDF (692 KB) June 25, 2025
67 Amended Decision Statement PDF (690 KB) February 28, 2025
45 Amended Decision Statement PDF (936 KB) February 10, 2021

Contacts

Compliance Promotion & Follow-up Team
Impact Assessment Agency of Canada
160 Elgin Street, 22nd Floor
Ottawa, Ontario K1A 0H3
Email: postdecision@iaac-aeic.gc.ca

Media Relations
Impact Assessment Agency of Canada
160 Elgin Street, 22nd Floor
Ottawa, Ontario K1A 0H3
Email: media@iaac-aeic.gc.ca


Disclaimer

This map is for illustrative purposes. The markers represent the approximate locations based on available data. More than one marker may be identified for a given assessment.

  • Location

    • Geraldton (Ontario)

  • Nature of Activity

    • Mines and Minerals

  • Assessment Status

    Completed

  • Start Date

    2014-06-13

  • Proponent

    Greenstone Gold Mines (formerly Premier Gold Mines Hardrock Inc.)

  • Authorities

    • Impact Assessment Agency of Canada

  • Assessment Type

    Environmental assessment under CEAA 2012

  • Reference Number

    80068

Nearby assessments

...within 200 kilometres
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