Marathon Platinum Group Metals and Copper Mine Project

Marathon (Ontario)

Reference number: 54755
Federal Responsible Authority: Canadian Environmental Assessment Agency
Proponent: Stillwater Canada Inc.
Environmental Assessment Commenced: 2010-04-16
Environmental Assessment Type: Environmental Assessment by Review Panel
Referred to Review Panel: 2010-10-07
Status: Environmental assessment in progress

Latest Update

October 31, 2014 - The Minister of the Environment has disbanded the Joint Review Panel established to conduct the environmental assessment of the proposed project, as the proponent has indicated that it does not plan to proceed with the project at this time.

October 29, 2014 - The proponent provided a project update on September 2, 2014, which indicated that it has decided not to move forward with the Project at this time and cannot provide any further timelines.

About the Proposal

Marathon PGM Corporation is proposing to construct, operate and decommission an open pit platinum group metals and copper mine approximately 10 km from Marathon, Ontario. The proposed project would include three open pits, an ore processing plant, tailings and mine rock storage facilities, site access roads, a 7 km power transmission line, explosives factory and magazines, water management facilities, ancillary mine infrastructure and associated activities. The rate of production would be approximately 22,000 tonnes per day with a proposed operating mine life of approximately 11.5 years.


  • For Public Participation (18)
    Contains all documents related to public participation opportunities
  • News Releases (15)
    Contains all news releases related to this environmental assessment process.
  • Comments Received/Responses (300)
    Contains comments received related to the environmental assessment process and, when applicable, responses to those comments.
  • Hearing Documents (13)
    Contains all documents related to the public hearing process.
  • Panel Records (155)
    Contains all documents produced by the review panel or its secretariat, except those produced during the public hearing.
  • Additional Information (188)
    Contains additional records related to the project and the environmental assessment process.
List and Search All Documents

This project is also subject to the environmental assessment requirements of the Government of Ontario.

For questions or information, please contact:

Marathon Platinum Group Metals and Copper Mine Project
Canadian Environmental Assessment Agency
160 Elgin Street, 22nd floor
Place Bell Canada
Ottawa, Ontario K1A 0H3
Telephone: 613-957-0700 or 1-866-582-1884
Fax: 613-957-0941

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