Underground construction site – clearing the way for the new metro
![Everything is going to plan](/shared/media/annual-report/annual-report-2017/magazin/grand-paris/liebherr_grandparis_1152x648_slideshow1_1.jpg)
Everything is going to plan
Grand Paris also calls for organisation on an unprecedented scale. At the metro construction site in the Batignolles district of Paris, continuous communication is key.
![Maximum power for the tubes](/shared/media/annual-report/annual-report-2017/magazin/grand-paris/liebherr_grandparis_1152x648_slideshow1_6.jpg)
Maximum power for the tubes
Beneath the streets of Paris, there are giants at work. Tunnel-boring machines are burrowing through the ground and opening up the way for new metro lines.
![Reaching for perfection](/shared/media/annual-report/annual-report-2017/magazin/grand-paris/liebherr_grandparis_1152x648_slideshow1_3.jpg)
Reaching for perfection
Storing the prefabricated concrete components for lining the metro tunnel at the constricted inner-city construction site and making them available at the right time requires intelligent planning.
![Down into the depths](/shared/media/annual-report/annual-report-2017/magazin/grand-paris/liebherr_grandparis_1152x648_slideshow1_4.jpg)
Down into the depths
Lowering the concrete shells into the metro shaft calls for a high degree of dexterity and experience on the part of the crane drivers. Space is tight down there. There is scarcely any scope for correcting manoeuvres.
![A seemingly endless tunnel](/shared/media/annual-report/annual-report-2017/magazin/grand-paris/liebherr_grandparis_1152x648_slideshow1_7.jpg)
A seemingly endless tunnel
After the giants beneath the ground are gone, the tunnel with its sparse lighting seems endless.