In 2021, Dumas commenced work on a major ventilation shaft at La Colorada, located in Sonora, Mexico. Owned and operated by Pan American Silver, this project was integral to expanding ventilation capacity and improving underground conditions.
Dumas engineered and constructed a 590-metre-deep, 5.5-metre-diameter concrete-lined ventilation shaft. The project enhanced airflow, enabling production growth and improving safety for the underground workforce. Completed in 2023, the project recorded a TRIFR and LTIFR of 0.00 with over 337,000 hours worked, underscoring Dumas’ strong safety culture.
Scope of Work
- 590m x 5.5m diameter ventilation shaft
- Engineering, design, and construction of shaft furnishings
- Ventilation infrastructure to expand production capacity
