https://www.epa.gov/toxics-release-inventory-tri-program https://www.canada.ca/en/services/environment/pollution-waste-management/national-pollutant-release-inventory.html https://www.teck.com/media/Teck_Approach_to_Air_Quality_2021.pdf https://www.teck.com/media/Teck_Approach_to_Air_Quality_2021.pdf https://www.canada.ca/en/environment-climate-change/campaigns/canadian-environment-week/clean-air-day/air-quality.html https://www.worldbank.org/en/topic/pollution#1 2021 Highlights of community-based air quality stations recording annual average values were within the World Health Organization (WHO) guideline interim target value for ambient concentrations of particulate matter less than 2.5 microns in size Implemented initiatives to improve air quality monitoring and to minimize impacts from our activities on communities at our operations in the Elk Valley, and at our Trail, Carmen de Andacollo and Red Dog operations 100% Our Targets and Commitments Our goal is to continuously improve air quality and reduce dust emissions for the benefit of workers, communities and the environment in areas affected by our activities.