Conuma is committed to protecting the environment throughout our mining operations. We focus on sustainable practices and improving our care for nature by minimizing impacts during active mining phases and by enhancing reclamation and restorative activities. Our plans include the accurate measurement and reduction of emissions, as well as educating our employees about their role in protecting the environment. We also believe in working together with governments, Indigenous Nations, and local communities. We solicit and listen to their ideas and concerns, with a focus on ensuring that our work benefits everyone. This way, we are committed to a future where mining and environmental care are integrated.

Water is critical to our operations, Indigenous Nations, and local communities. We manage water quality and quantity at the watershed level through all stages of mining—construction, operation, and closure.

All Conuma sites are currently located in low-risk watersheds, as assessed using the World Resources Institute’s Aqueduct Water Risk Atlas. We also use tools like Flux Forecast to anticipate extreme weather events and proactively adjust operations during snowmelt and heavy rainfall.

We continuously update our water management plans based on best practices and site-specific modelling. Strategies include non-contact water diversion, improved stockpiling, and advanced blasting techniques to reduce contaminant generation.

At Brule Mine, we operate two Biochemical Reactors (BCRs) that treat over six million litres of water daily, utilizing natural microbial processes to reduce nitrate and selenium levels. We are also advancing a Moving Bed Biofilm Reactor (MBBR) system, with a full-scale plant designed and constructed based on the successful pilot testing. It is expected to treat over two billion litres annually once it is permitted to operate.

Water recycling plays a key role in reducing freshwater use. Willow Creek Mine operates on 100% recycled mine and processing water. Likewise, Quintette Mine utilizes recycled water from the Shikano Pit and has implemented new systems to return water from tailings to the plant.

We closely monitor water quality and conduct regional studies on selenium bioaccumulation to ensure that aquatic ecosystems remain protected. Results continue to support our site-specific thresholds and inform long-term stewardship practices.