Frequently Asked Questions

The former Troilus Mine was operated by Inmet Mining Corp. from 1996 to 2010, during a low gold price environment. During this period, the operator was focused on other international projects, including the development of one of the largest copper mines in the world, Cobre Panama and the Las Cruces mine in Spain. As such, they did not allocate capital nor exploration efforts to extend the mine life at Troilus, which was in its portfolio of projects, not a priority. Once the Reserves were exhausted, the mine was shut down.

Since acquiring the site in 2017, Troilus has conducted extensive exploration work and completed over 325,000 metres of drilling, which has increased the gold and copper mineral resources on the property significantly. In fact, Troilus has grown to be one of the largest undeveloped gold and copper projects in Canada.

As a brownfield site where a mine previously operated, one of Troilus’s biggest advantages is having a site with existing infrastructure. The Troilus site already has a network of access roads, a 100-man camp, and power infrastructure leading to it. From an environmental standpoint, this will lessen the impact and cost of the future operation.

The Troilus Project previously operated as an open-pit mining operation, and our plan is to use this same method of mining again when re-initiating operations.

Troilus is currently advancing through the permitting and engineering stages of the project. Over the last several years, we have been working on the Environmental and Social Impact Assessment (ESIA), which we expect to submit in mid-2025 to the appropriate federal and provincial ministries. Learn more about the ESIA HERE

Permit approvals are expected in 2026, with construction planned to begin in 2027. Commissioning and pre-production activities are expected in 2028-2029.

The Troilus Project is expected to be a major driver of long-term economic development in the region. Since inception in 2017, Troilus has already invested over $120 million in Quebec, including $86.4 million in Nord-du-Québec. Based on the commodity prices as of April 2025 ($3,400/ounce of gold), the project is forecasted to contribute approximately $4.42 billion in tax revenue to the province of Quebec over its 22-year mine life which will support job creation, training opportunities, Indigenous partnerships, and ongoing investment in local infrastructure and businesses, among other benefits.

The Troilus Project is expected to create significant employment opportunities in the region. At the peak of construction, the project will create up to 1,000 direct jobs. Once operational, it will sustain an average of about 680 direct jobs annually over the 22-year mine life, covering a range of skilled positions including, but not limited to:

• Equipment Operators
• Surveyors
• Mining Engineers
• Project Managers
• Geologists
• Superintendents
• Heavy Equipment Mechanics
• Mapping Technologists
• Environmental Biologists
• Production Drillers

Yes. Troilus is committed to prioritizing local and Indigenous hiring. Hundreds of long-term jobs and training opportunities will be available for residents of nearby local and indigenous communities. In 2018, Troilus signed a Pre-Development Agreement with the Cree Nation of Mistissini and the Cree Nation Government, which set the foundation for a collaborative and mutually beneficial relationship. The company is now working toward establishing an Impact and Benefits Agreement (IBA) to further support employment and business opportunities for the Cree Nation.

The Feasibility Study published in May 2024 was completed using a conservative gold price assumption of US$1,975 per ounce. At this price, the after-tax Net Present Value (NPV) of the project was estimated at US$885 million. Assuming a more recent gold price of $3,300/oz (April 2025), the project NPV increases to $3.2 billion.

In addition to gold, a large portion of Troilus production is anticipated to be copper. Troilus is currently the largest permitting-stage copper project in Quebec, aligning it with the province’s strategic metals initiatives and global energy transition goals. The combination of gold and copper strengthens the project’s fundamentals and supports its stability over the full 22-year mine life and beyond.

Troilus is committed to open and respectful dialogue with neighbouring and Indigenous communities. We welcome feedback, questions, and concerns, and use them to improve how we operate and engage. Please visit this page to learn the various ways you can engage with us: 

You can also submit feedback in the following ways, anytime:

• Email: [email protected]
• Call us toll-free: 1-800-625-6850

All submissions are treated confidentially and handled with care.

Troilus supports local businesses through a transparent procurement process. A Cree Procurement Qualification Form has been developed for Cree entrepreneurs. Local businesses can reach out at [email protected] to learn more about procurement opportunities.

Yes, Troilus is committed to ensuring that community input is central to the closure plan and the future use of the land. Feedback from land users, including requests for specific plant species, wildlife habitat restoration, or potential uses will be considered. Workshops and consultations are ongoing and will continue throughout the process to ensure that the land is restored in a way that reflects the needs and values of the local communities and Cree Nation.

• If you have any feedback or concerns, please visit our “Ways to Engage” and “Your Feedback & Concerns Matter” to get in touch with the Troilus team.

Troilus is committed to ongoing communication with local and Indigenous communities, ensuring that all impacted stakeholders are actively informed and engaged throughout the development and life of the project. We will continue offering opportunities to participate in workshops, advisory committees, and consultations as the project progresses toward construction. Your feedback is integral to the success of the project.

To stay informed and involved, please visit the Ways to Engage section of the website and check the Upcoming Events list for more information on upcoming engagement opportunities.

A new closure plan will be submitted with the Environmental and Social Impact Assessment (ESIA). This plan will be reviewed and renewed every 5 years to ensure it remains in line with regulatory requirements, community needs and future land use in addition to incorporating new information obtained through ongoing social and monitoring plans.

Troilus is committed to maintaining high water quality standards throughout the life of the project. We conduct rigorous, ongoing monitoring of pit water, surface water, and effluent to ensure compliance with both provincial and federal environmental standards. These monitoring efforts are aligned with water quality standards set by regulatory bodies, including the Ministry of the Environment, Climate Change, Wildlife and Parks (MELCCFP), and Metal and Diamond Effluent Regulations (MDMER). All monitoring results are submitted to the appropriate authorities for review, ensuring that the project continues to meet or exceed environmental requirements.

Troilus is committed to long-term environmental restoration, focusing on enhancing local ecosystems and preserving wildlife corridors. The current closure plan is designed around the restoration of natural stream systems, ensuring the land is returned to a state that allows future land use such as hunting, fishing and trapping. Based on consultations with the community, Troilus is dedicated to maintaining the integrity of local ecosystems and improving habitats for future generations. This includes efforts to restore native vegetation, support wildlife movement, and manage water quality to ensure a healthy and sustainable environment post-closure as well as through our proposed compensation plans.

Troilus is focused on minimizing environmental impacts through strategies like gentler slopes, native vegetation restoration, and wildlife corridors. During production, Troilus will continue to engage with local communities to ensure that traditional practices, such as hunting and fishing, can continue. Long-term efforts will focus on habitat restoration and environmental monitoring to protect local ecosystems.

Troilus has carried out several consultations with land users and Mistissini representatives including technical workshops to propose a new layout that fits with local land use and addresses environmental and safety concerns. Troilus plans on diverting the Bibou creek during the construction phase to reduce any impact on the environment during the construction, operation and closure phase. The new Bibou stream layout will be maintained throughout the mine life and after closure so that it can maintain its ecological functions and be used by local fauna and land users with measures to minimize erosion and ensure wildlife access. The company will continue to monitor and manage the creek's condition, implementing best practices for erosion control and habitat restoration. Troilus is working closely with environmental specialists and regulatory bodies to ensure the diversion does not disrupt the natural flow of the ecosystem.

Troilus is committed to understanding and mitigating potential health risks associated with the project and ensuring the project remains safe for community health, local ecosystems, and food sources. As part of the Environmental and Social Impact Assessment (“ESIA”), an ecotoxicological study on airborne dust was carried out in 2018 to address issues from the from the former project. Additionally, the company is conducting further studies to assess any potential health risks to local communities and land users, including concerns about food contamination from mining residues and dust.

Troilus offers voluntary water quality monitoring for surrounding communities and land users. If any water sources are impacted, affected individuals will receive certificates of analysis directly, ensuring transparency and providing timely information to ensure safe access to drinking water. If you have any concerns or questions regarding water quality, please feel free to contact us at 1-800-625-6850 or [email protected].