Horne 5: A Sword of Damocles Hanging Over a Heavily Polluted Urban Area

Abstract

Our emblematic case of resistance to extractivism concerns the reopening of a mine in the city of Rouyn-Noranda, Quebec (Canada). Falco Resources Ltd’s Horne 5 mining project aims to extract a polymetallic deposit whose primary economic value lies in gold. The project is located in the Notre-Dame neighborhood and beneath Glencore’s Horne Smelter, which, since its opening in 1927, has drastically polluted the air in Rouyn-Noranda. The Horne 5 project ranks among the most dangerous, unacceptable, and harmful mining projects in Quebec in recent decades. In addition to posing significant psychosocial risks, this project entails catastrophic dangers for public safety, socioeconomic stability, and environmental protection.

The Cultural Landscape of Rouyn-Noranda

Rouyn-Noranda is a city of 42,000 residents, located on Nitakinan, Anicinape Aki, unceded Anishinaabe territory. The political context of Rouyn-Noranda has been marked by critical social and legal struggles and including a long legacy of tensions with extractive industries. This city is an island of culture (music, visual arts, performing arts, theater, etc.) within the boreal forest. Rouyn-Noranda is the home of a multicultural, resilient, activist, and family-oriented community. The Horne 5 project is located notably on the ancestral territory of the Long Point First Nation. Industrial activities have been a central part of Rouyn-Noranda’s development since the city’s founding 100 years ago this year.

Image: Facebook page of Collectif 33 (3) , Rouyn-Noranda.

If approved, the Horne 5 mining project would be situated at the very heart of this dynamic city, in a vibrant residential area, beneath an area already weakened by numerous abandoned mine tunnels. The literature also reflects a lack of data on mining in urban areas, as there are few such case studies.

Horne 5 – A Sword of Damocles

Image: Falco Resources Ltée. (4)

The Horne 5 project, which plans to extract 15,500 tons of ore per day from depths of up to 2,000 meters and generate 80 million tons of mine tailings, was entrusted to the BAPE (Bureau d’audiences publiques sur l’environnement) for a public review in 2024. As is standard procedure when the government grants such a mandate, the BAPE president formed a commission of inquiry to evaluate the project’s impacts. This formal examination brought to light several critical issues including:

1. Land subsidence and induced seismicity: Even before considering the risks associated with ground subsidence and induced seismicity, it is worth noting that the project is located beneath the Horne Smelter—an industrial complex with outdated infrastructure—where ponds of sulfuric acid and other toxic substances could cause major environmental disasters and pose significant risks of fatalities to workers as well as the general population. Rouyn-Noranda has, in fact, already witnessed a sudden ground subsidence in 2013, right in the heart of Mouska Park—a family recreation and playground area. The hole, over 3 meters wide, was located above the site of the former Chadbourne Mine, one of the many abandoned mines beneath the city. (5)

2. Ancestral Rights: The apparent violation of the ancestral rights of Long Point First Nation is a major issue in this mining project. Indeed, during the commission of inquiry, the government’s responses raised “reasonable doubts that the constitutional obligation to consult Indigenous peoples holding ancestral rights was not respected for all communities whose territory is affected by the Horne 5 mining project, starting with the Long Point First Nation.” (6)

3. Water Protection: In addition to threatening the integrity of numerous water bodies through the installation of freshwater intake pipelines, the Horne 5 project poses numerous risks of serious contamination of Lake Dufault, the lake that supplies the sole pumping station in the drinking water supply of the city of Rouyn-Noranda. This contamination could result from leaks in the 17-kilometer pipelines transporting mine tailings or from leaks in the tailings pond dams.

4. Greenwashing: The company uses greenwashing rhetoric regarding actions related to its project’s mining liability management plan, even though its plan for handling mine tailings poses a serious threat to the environment and human health. Indeed, after selecting an unreclaimed site to store the planned tailings, the developer is trying to convince the community that adding acid-generating, leachable, and cyanide-containing materials to the environment could be a beneficial option.

5. Air Quality: The industrial activities carried out by Glencore’s Horne Smelter in the city of Rouyn-Noranda generate alarming levels of heavy metals (arsenic, barium, cadmium, copper, nickel, and lead). The company’s unacceptable levels of air pollution from the smelter and the government’s complicity in allowing it are one the most persistent and controversial environmental scandals in Quebec. The literature shows that the population of Rouyn-Noranda is exposed to an increased incidence of lung cancer, chronic obstructive pulmonary disease, neurological problems, and intra-uterine growth retardation. The Horne Smelter is still authorized to operate by smelting waste from all over the world to extract copper, provided that arsenic levels in the air in Rouyn-Noranda remain below 45 ng/m³. The company was granted an extension until 2030 to meet an interim threshold of 15 ng/m³, notwithstanding the Quebec standard of 3 ng/m³, and may maintain this threshold until 2033. However, the Institut national de santé publique du Québec stated in 2022 that while the 15 ng/m³ threshold protects vulnerable groups (such as children) from certain effects, the only target to be considered safe remains the 3 ng/m³ standard. The Horne 5 project thus seeks to operate in an environment where standards are already being exceeded, violating the enforcement regime of Section 197 of the Clean Air Regulation. Authorizing a new mining project would therefore only exacerbate an illegal situation that has been tolerated for far too long.

Credit: Guillaume Proulx, 2019, Rouyn-Noranda.

 6. Multiple social and economic costs: The socioeconomic impacts include, first and foremost, the aggravation of the housing crisis. The arrival of new workers and their families will lead to an increased demand for housing. This demand occurs despite an extremely low vacancy rate of 0,9 % recorded in 2025 (7), which is significantly below the 3% balance threshold recognized in Quebec. In other words, Rouyn-Noranda is already facing a severe housing crisis that will be further exacerbated by the arrival of new workers. “Furthermore, the gradual relocation of residents to create a buffer zone near the Horne Smelter — a measure to be implemented after 2028 — underscores the scale of the environmental and health challenges that the city and its population must (already) contend with.” (8) Added to this are the population’s anxiety and social fatigue, as well as threats to Rouyn-Noranda’s long-term attractiveness and vitality.

Timeline of Resistance

Here is an overview of the timeline of citizen mobilization related to the Horne 5 project.

• May 17, 2024 | Call for citizen mobilization

Release of a press release inviting the residents of Rouyn-Noranda to attend the first information meeting regarding the Horne 5 project. 

• May 21, 2024 | Official letters sent to the Minister of the Environment and the President of the BAPE 

An official letter was sent to the Minister requesting that the Bureau d’audiences publiques sur l’environnement (BAPE – Office of Public Hearings on the Environment) hold public hearings regarding the Horne 5 project, along with an official letter to the President of the BAPE requesting a preparatory meeting for the public prior to the public hearing. The preparatory meeting took place on August 13, 2024.

• June 27, 2024 | Invitation to a community engagement planning workshop

Release of a press release inviting citizens to a free workshop on July 7, 2024, on planning participation in the Bureau d’audiences publiques sur l’environnement (BAPE) hearings for the Horne 5 mining project.

• August 14 and 26, 2024 | Participation in strategic meetings with residents of Rouyn-Noranda

Two strategic meetings just before the start of the public inquiry.

• August 27, 2024 | Start of the BAPE hearings in Rouyn-Noranda: Several crucial questions to ask about the troubling Horne 5 mining project

Release of a press release stating: “Civil society is ready for the process. Despite the case being launched in the middle of summer and the company’s chaotic and unannounced presentation of documentation, the groups managed to study the case in detail by pooling their resources.”

Image: Rouyn-Noranda during the Bureau d’audiences publiques de l’environnement (BAPE) hearing on the Horne 5 project. Credit: Radio-Canada / Lise Millette (9)

• August 27–29, 2024 | Participation in the five sessions of the first part of the BAPE public hearings in Rouyn-Noranda.

Period for providing information and presenting the ins and outs of the project as well as environmental issues. Citizens may, in particular, ask questions of the proponent.

Image : BAPE in the works, café-bar L’Abstracto, Rouyn-Noranda. Credit: Guy Leclerc 

• September 16–26, 2024 | Period set aside for the submission of views orally, via a brief, through comments, or via annotated images.

September 26 was the deadline for submitting briefs. The Coalition Québec Meilleure Mine and MiningWatch Canada submitted a joint brief regarding Falco Resources Ltd.’s Horne 5 mining project. 

• September 30 to October 3, 2024 | Second part of the BAPE public hearing for Falco Resources’ Horne 5 mining project.

This second part allows individuals to speak on the subject. It is an opportunity to, for example, make recommendations or even present one’s brief orally. 

• Fall 2024 | Recommendation by regional health authorities to commission a seismic risk analysis.

Regional health authorities (the CISSS-AT) recommended that the ministry require in-depth studies on the risks of earthquakes caused by the mine. The primary concern is the radiation oncology center—also located in the Notre-Dame neighborhood—in Rouyn-Noranda, where vibrations could damage medical equipment.]
 

• December 23, 2024 | Submission of the BAPE report to the minister

The turning point

It was through the process of the Bureau d’audiences publiques sur l’environnement (BAPE) that the Commission of Inquiry officially concluded, on January 7, 2025, that the Horne 5 project is unacceptable. The report states that the project does not meet minimum requirements for safety, public health, and environmental protection. A large network of organizations came together to stand up to Ressource Falco Ltd. before and during the BAPE-led Commission of Inquiry.

Image: Large demonstration in Rouyn-Noranda organized by Mères au front and their allies, October 13, 2024, on 9th Street | Enough is enough. Credit: Williams Nourry

Portraits of the activists

First Nations

• Long Point First Nation (LPFN) : Following the inquiry, the First Nation has raised concerns about the project’s impact on air and water quality, as well as on the local economy. It is demanding that environmental and socioeconomic studies be conducted directly by the community to protect its ancestral rights. The LPFN spoke at the BAPE hearings, asserted its rights over its traditional unceded territory, and emphasized that the project must obtain the LPFN’s prior and informed consent, as detailed in its press release: “No Consent = No Project”.

 Environmental Groups

• Abitibi-Témiscamingue Regional Environmental Council — A non-profit organization (NPO) dedicated to promoting environmental conservation and improving environmental quality. They submitted 162 recommendations to the BAPE, criticizing the lack of consideration for the project’s cumulative effects. The CREAT highlights the health risks illustrated by the “simple measures” (vacuuming with HEPA filters, specific dietary guidelines to limit lead and cadmium absorption) suggested to the public by provincial public health authorities, reflecting an environment already saturated with contaminants and environmental stressors. 

• Eau Secours — a Montreal-based non-profit organization dedicated to promoting the protection and responsible management of water in Quebec. Eau Secours has pointed out to the second part of the BAPE the glaring lack of consistency in the company’s proposal to create a mine tailings pond (projected to hold 40 million tons of highly reactive and acid-generating tailings) directly within the watershed of the city’s drinking water source, Lake Dufaut. The organization also points out that the developer has not presented an emergency plan in the event of a facility failure. 

• Action Boréale — a non-profit organization based in Abitibi-Témiscamingue dedicated to promoting the preservation of Quebec’s boreal forests. They have consistently reminded the government, following the release of the BAPE’s scathing report, of its responsibility for the environment. Action Boréale asserts that the project has more negative impacts than benefits for the community. 

• Société pour vaincre la pollution (SVP) — a non-profit organization working to defend citizens’ rights to a healthy environment: Offers support and states that “this is one mine too many for Rouyn-Noranda.” 

• MiningWatch Canada — an Ottawa-based non-governmental organization acting as a watchdog for the mining industry. They continue to call on the government to cease all investment in this harmful project and to publicly confirm its opposition. 

• Regroupement vigilance mines de l’Abitibi et du Témiscamingue (Revimat) — a non-profit organization advocating for improvements to the Mining Act and environmental protection. They have consistently reiterated their opposition to the project in a joint press release, noting in particular that “the possibility of seismic activity could damage the smelter’s structures and release toxic substances into the air.”  

• Comité Arrêt des rejets d’émissions toxiques (ARET) — a citizens’ group advocating for the reduction of air pollutants. They refer to air quality issues in the same press release: “We therefore expect these recommendations to put an end to the project, as the population is already unacceptably overexposed to toxic emissions.” 

Health, Social Justice, and Community Solidarity

• Mères au Front (Rouyn-Noranda) — a local chapter of the pan-Canadian Mères au Front movement, which brings together mothers and grandmothers driven by a desire to act to protect our children’s future and life on Earth in the face of the climate emergency. This group, acting solely out of a duty to protect future generations, places the right to health, safety, and a clean environment at the heart of its struggle. They believe that the mining industry is incompatible with urban areas and oppose the Horne 5 project because it would increase the vulnerability of a population already overexposed to numerous neurotoxic contaminants.

Image: Protest organized by Mères au Front on October 13, 2024, in Rouyn-Noranda to remind the Legault government that the ongoing situation in Rouyn-Noranda is unacceptable. Credit: Maude Desbois (10)

• Centre Entre-Femmes: Active in the community for over 30 years, this organization works to improve women’s living conditions. Its opposition to the Horne 5 project centers on poverty and economic inequalities: since the jobs created are primarily male- , the center condemns the widening wage gaps in industrial regions and calls for a gender-based impact analysis, also fearing an increase in the risk of violence and issues related to alcohol and drug use. 

• Coopérative d’habitation Boréale: Opposing the developer’s 15-year vision, the housing cooperative advocates for a 40-year urban development cycle to secure the neighborhood’s future. Its struggle highlights the invisible social costs: it points out that communities bear the brunt of the hardships (suicides, domestic violence) linked to fluctuations in the price of gold—human tragedies for which no budget provides to absorb the consequences. The Cooperative has received a very high volume of demand in recent years, a demand it cannot meet. 

• The Abitibi-Témiscamingue Tenants’ Association also opposes the Horne 5 project and participated in the BAPE, raising concerns in particular about the pressure this project would place on this “sacrificed zone.” This association considers housing to be “a place where everyone should be safe day and night.” The city of Rouyn-Noranda has been in a housing crisis for nearly 15 years. Their argument also emphasized that, in addition to all the dangers raised by the project, the community more often than not bears the burden of finding solutions and accommodations for the population. This additional pressure is absolutely undesirable for Rouyn-Noranda’s community organizations.

The systemic oppression of extraction

In Quebec, communities affected by mining projects are oppressed by a glaring lack of oversight by the government regarding the massive investments it grants to the mining sector, as well as by the acceleration of mining projects at the expense of communities. 

For its part, Falco Resources Ltd. engages in the constant withholding and distortion of information, in addition to failing to listen to the public’s concerns and to take environmental assessments seriously. The recent filing (released to the media in late May 2026) of the expert report commissioned to analyze the risks associated with seismic activity supports this view. This report, so eagerly awaited by the public, has failed to clarify the uncertainty that persists regarding the safety of people and the radiation oncology center. A freedom of information request yielded only a heavily redacted version of the report, making it impossible to access nearly all of its content. 

At the same time, the community of Rouyn-Noranda is enduring a historic cycle of threats of industrial closure from Glencore, creating deep polarization within families and the population, and placing citizens in a constant false dilemma between economic survival and the protection of the environment and overall health. 

Everyone has been holding their breath for a long time now.

A year and a half after the BAPE report was submitted, the Horne 5 project is entering the final stages of its environmental impact assessment. At this critical juncture preceding potential mining operations, communities are awaiting the final decision regarding the authorization decree, which is reportedly scheduled for June 2026, according to the company’s latest Advisory Committee meeting dated March 18, 2026. The city’s cultural landscape now hinges on this government decree, which will determine whether authorities choose to ignore or respect the BAPE’s finding of unacceptability. The community is sincerely holding out hope that the final decision will serve the best interests of the local population and the Anicinape First Nation, while ensuring the protection of the environment as well as water and air quality.

To date, however, the network of activists remains mobilized. 

Image: Large demonstration in Rouyn-Noranda organized by Mères au front and their allies, October 13, 2024| Enough is enough | NO TO HORNE 5 ! Credit: Williams Nourry

And to what end?

A victory would mean the rejection and permanent stop of the Horne 5 project in order to ensure the safety and health of the citizens of Rouyn-Noranda through a realistic assessment of the project’s cumulative impacts, the carrying capacity of the project site, and the relentless pace of the pro-extractive agenda of companies targeting the Abitibi-Témiscamingue region. In the meantime, we are proud to say that the people of Rouyn-Noranda are a great inspiration to the Coalition Québec meilleure mine, and that their efforts serve as an example to follow for other mining struggles throughout the province. The measures taken by the community to mobilize against all these extractive giants are “admirable on a global scale.”

Image: The Horne Smelter at sunset. Credit: Guillaume Proulx, 2020, Rouyn-Noranda.

Image: Notre-Dame neighborhood at night. Credit: Guillaume Proulx, 2019, Rouyn-Noranda.

Endnotes 

1 – Company Facebook page: https://www.facebook.com/RessourcesFalco/

 2-  Rivard, J. (December 2021). Démarrage de l’usine d’acide sulfurique de la fonderie Horne – 20 décembre 1989 | Héros sans panache | Société d’histoire de Rouyn-Noranda.http://shrn.ca/des-jours-qui-ont-fait-rouyn-noranda/20-decembre-1989-demarrage-de-lusine-dacide-sulfurique-de-la-fonderie-horne

3 – Collectif 33 Facebook page: https://www.facebook.com/photo?fbid=122104798005292317&set=pcb.122104801341292317&locale=fr_CA

4 –  Cotnoir, J.-M. (May 25, 2026).Horne 5 : le flou persiste quant aux risques sismiques. Radio-Canada.https://ici.radio-canada.ca/nouvelle/2256119/horne-5-mine-risque-sismique-cisss-at

 5 –  Luneau, A.-C. (2013, February 6). Rouyn-Noranda : le sol s’affaisse au parc Mouska. Radio-Canada.  https://ici.radio-canada.ca/nouvelle/599141/trou-parc-mouska

 6 –  QMM and MWC. (2024, September 26). Mémoire | BAPE projet minier Horne 5 de Ressources Falco à Rouyn-Noranda | Mining Watch Canada. https://miningwatch.ca/fr/blog/2024/9/26/memoire-bape-projet-minier-horne-5-de-ressources-falco-rouyn-noranda

 7-  OBVAT. (2026, 4 juin). Taux d’inoccupation des logements, Abitibi-Témiscamingue et Québec, 1996 à 2026p – L’Observatoire de l’Abitibi-Témiscamingue. https://www.observat.qc.ca/statistiques/taux-dinoccupation-des-logements-abitibi-temiscamingue-et-quebec-1996-a-2026p/ 

8- BAPE, Bureau d’audiences publiques sur l’environnement. (2024).Projet Horne 5 à Rouyn-Noranda par Ressources Falco ltée: rapport d’enquête et d’audience publique. Bureau d’audiences publiques sur l’environnement Bureau d’audiences publiques sur l’environnement. https://www.bape.gouv.qc.ca/fr/dossiers/mine_horne5/

 9- Millette, L. (2025, March 4). Projet Horne 5 : Québec freine l’élan de Ressources Falco. https://ici.radio-canada.ca/nouvelle/2145532/falco-horne-fonderie-rouyn-noranda-mine

 10-  Fortin-Rondeau, I. (2025, November 18). Le Pudding à l’arsenic : une version industrielle signée Fonderie Horne. https://www.meresaufront.org/billets-de-blogue/le-pudding-a-larsenic-une-version-industrielle-signee-fonderie-horne