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Horne Smelter

Air quality

Reducing our impact on the environment and the community has long been a key priority for the Horne Smelter. We aim to comply with the environmental standards that apply to us, and we are implementing actions that will enable us to meet and exceed our annual targets.

Ambient air quality

Emissions data for the Horne Smelter is now available via an interactive map.

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  • FAQ

    Questions concerning the data
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Currently, around 99% of Rouyn-Noranda's urban perimeter is at 15 ng/m3 of arsenic or less.

Since 2005, the average annual concentration of arsenic in ambient air at the legal station has decreased by over 70% thanks to the implementation of numerous projects.

  • Construction of concentrate storage domes

  • Acquisition of vacuum and water trucks

  • Installation of a truck wheel cleaning station

  • Construction of a windbreak fence

  • Installation of two domes and a shelter for receiving concentrates

  • Optimization of the fugitive gas capture network in the anode sector

Annual arsenic averages at the Horne legal station from 2005 to 2023 (in ng/m3)

(available in french only)