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

December 7, 2021 — The Joint Review Panel determined the additional information provided by the Proponent related to the Environmental Impact Statement is sufficient and issued a Notice of Public Hearing, including the Public Hearing Procedures and instructions on how to participate.

On December 7, 2021, the Panel announced that the public hearing would begin on February 15, 2022. Since the hearing was announced, Canadians are now faced with surging cases of the Omicron variant. Accordingly, the Province of Ontario has implemented additional public health measures that include new restrictions associated with meetings and indoor gatherings. It has also created unprecedented cases of Covid-19 in our communities resulting in staffing shortages within private and public organizations. The Panel needs participants to be prepared for the hearing in order to receive meaningful evidence that will inform the Panel’s conclusions. The Panel believes that the current public health situation in Ontario may have notable implications for participants to effectively prepare for the public hearing. As a result the Panel has decided to change the start date of the public hearing to March 14, 2022. Accordingly, the deadline for written submissions has changed to February 25, 2022.


Key documents

Key documents
Document Number Document Title File Date
1004 From the Joint Review Panel re: Public Hearing Information Session Questions and Answers (see References #982 and #1003) PDF (744 KB) January 21, 2022
1003 From the Joint Review Panel re: Public Hearing Process Information Video for the Marathon Palladium Project PDF (262 KB) January 21, 2022
982 From the Joint Review Panel re: Presentation of the Information Session of January 11, 2022, on the Public Hearing PDF (1.6 MB) January 11, 2022
974 From the Joint Review Panel re: Change of Start Date for the Public Hearing (see Reference #957) PDF (581 KB) January 5, 2022
966 From the Joint Review Panel re: Public Hearing Procedures Questions and Answers (see Reference #956) PDF (714 KB) December 22, 2021
957 Public Notice: Notice of Public Hearing for the Marathon Palladium Project (Updated January 6, 2022) - December 7, 2021
956 Public Hearing Procedures PDF (1.4 MB) December 7, 2021
936 From the Joint Review Panel re: Site Visit Summary (see Reference #919) PDF (5.2 MB) October 22, 2021
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 May 19, 2021) - 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

Date modified: