Troilus Mining Project

Troilus Gold Corp. is proposing the construction, operation and decommissioning of a new open-pit gold and copper mine located approximately 76 kilometres northwest of the Cree community of Mistissini and approximately 170 kilometres north of Chibougamau, Quebec. As proposed, the Troilus Mining Project would include the mining of two former open pits and one new pit, the reuse of the tailings facility, the development of waste rock and overburden piles, and the construction and operation of a new ore processing plant complex. The project would have a maximum ore production capacity of 40,000 tonnes per day and a 10-year operating life.

Latest update

May 4, 2023 — The Joint Assessment Committee has posted the Notice of Commencement of an Impact Assessment and issued the Tailored Impact Statement Guidelines and required plans to the proponent for the preparation of an Impact Statement.

At a glance

1. Planning

1. Planning

Completed 180/180 days

Key documents

2. Impact Statement

2. Impact Statement

In progress 383/1095 days

Key documents

3. Impact Assessment

3. Impact Assessment

Not started 0/300 days
4. Decision Making

Date of decision

Anticipated on October 17, 2025

4. Decision Making

Not started 0/30 days
5. Post Decision

Post Decision phase is an ongoing process

The project is expected to begin as federal authorizations are issued and other compliance requirements are met.

5. Post Decision

Not started



Troilus Mine Project
Impact Assessment Agency of Canada
901-1550, Estimauville Avenue
Québec, Quebec G1J 0C1
Telephone: 418-649-6444

  • Location

    • Municipality of Baie-James (Quebec)
  • Nature of Activity

    • Mines and Minerals
  • Assessment Status

    In progress
  • Start Date

  • Proponent

    Troilus Gold Corp.
  • Authorities

    • Impact Assessment Agency of Canada
  • Assessment Type

    Impact Assessment by the Agency
  • Reference Number


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.

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