Shotcrete application is now officially underway at the final ventilation shaft of the Lyon–Turin Tunnel – CO5a lot in Avrieux. With preparation complete and systems calibrated, our concrete spraying robot is delivering precise, controlled application to ensure uniform coverage and optimal ground support performance. This phase is critical in reinforcing shaft stability, enhancing safety, and securing long-term structural integrity. It’s a proud moment to see planning, technology, and teamwork c