Marathon Palladium Project

GenPGM is proposing to construct, operate and decommission an open pit palladium 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 transmission line, explosives factory and magazines, water management facilities, ancillary mine infrastructure and associated activities. The rate of production would be approximately 25,200 tonnes of ore per day with a proposed operating mine life of approximately 12.7 years.


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.

Latest update

May 19, 2022 — The Joint Review Panel has closed the record. The Joint Review Panel is preparing its report for the federal and provincial Ministers of the Environment.


Key documents

Key documents
Document Number Document Title File Date
1298 From the Joint Review Panel re: Close of the record PDF (206 KB) May 19, 2022
1143 Public Hearing - List of Undertakings (last updated May 12, 2022) PDF (700 KB) March 17, 2022
1102 YouTube stream for the Marathon Palladium Project Public Hearing - March 8, 2022
739 Marathon Palladium Project Joint Review Panel Process Information Video - April 6, 2021
737 From the Panel Secretariat re: Information Sheet for the Marathon Palladium Project PDF (1.3 MB) February 5, 2021
731 Public Notice - Marathon Palladium Project - Signing of the Amended Joint Review Panel Agreement and Terms of Reference - February 3, 2021
730 Amended Joint Review Panel Agreement and Terms of Reference PDF (2.5 MB) February 3, 2021
728 Compilation of Key Documents for the Marathon Palladium Project (Note: Updated January 21, 2022) PDF (690 KB) January 8, 2021
727 EIS Addendum (Note: Updated February 10, 2022) - January 8, 2021
718 Backgrounder - Biographies of Joint Review Panel Members - November 16, 2020
717 News Release - Marathon Palladium Project - Establishment of Joint Review Panel - November 16, 2020
694 Draft Amended Agreement for Joint Review Panel for Marathon Palladium Project Environmental Assessment PDF (125 KB) October 9, 2020
693 Notice of Timeline Extension - Marathon Palladium Project - October 9, 2020
692 From Generation PGM Inc. to the Impact Assessment Agency of Canada re: Resuming the Marathon Mine panel review PDF (2.7 MB) July 13, 2020
264 Amended Agreement to Establish a Joint Review Panel for the Marathon Platinum Group Metals and Copper Mine Project (Complete Agreement including all changes from the Amendment) PDF (55 KB) August 3, 2012
227 Environmental Impact Statement - Supporting Information Documents (From Stillwater Canada Inc. to the Joint Review Panel) - July 12, 2012
224 Environmental Impact Statement Main Report (From Stillwater Canada Inc to Joint Review Panel) - June 29, 2012
150 Guidelines for the Preparation of an Environmental Impact Statement PDF (447 KB) August 10, 2011

List all records


Marathon Palladium Project
Impact Assessment Agency of Canada
Telephone: 613-957-0700

  • Location

    • Marathon (Ontario)
  • Nature of Activity

    • Mines and Minerals
  • Assessment Status

    In progress
  • Start Date

  • Proponent

  • Authorities

    • Impact Assessment Agency of Canada
  • Assessment Type

    Environmental assessment by Review Panel under CEAA 2012
  • Reference Number

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