METEOROLOGY AND AIR QUALITY

The air quality control of Sierra Gorda SCM operations is directly linked to environmental operational commitments, such as Environmental Rating Resolutions (RCAs), Particulate Material Standard 10 (MP10), and Particulate Material 2.5 (MP 2.5).

The RCA 137/2011 “Sierra Gorda Project” commits measures in the Environmental Impact Study and the Addendum, supplemented by bodies with environmental jurisdiction, which are appropriate and must be fulfilled for the implementation of the project.

For the control of emissions, the project considers the following management measures:

• Irrigation of work fronts, roads, and circulation areas in the mine/plant Catabela areas, ducts and filtration plant, with a frequency of nine times per day, reaching a control efficiency of 90%.
• Stabilization of access roads in the areas mine/plant Catabela and filtration plant, by applying bischofite or similar every 20 days, reaching a mitigation efficiency of 90%.
• Installation of suppressors and dust collectors in crushing lines, achieving a mitigation efficiency of 90%.
• Installation of dust collectors in the transfer conveyors, high-pressure mill and grinding, achieving a mitigation efficiency of up to 98%.

Full details of the environmental component measurements can be consulted in Annex 4-3.1 of Addendum No. 2 to the Environmental Impact Study of RCA 137/2011 “Sierra Gorda Project.”

For more details, please review the chapter Environment in our 2023 Sustainability Report HERE.