Damien CochereauNarrator (voice)
Pierre-Antoine DavanneSelf - Chief engineer for the tunnel boring machine
Florent MartinSelf - Project manager of the construction
David DemiereSelf - Conveyor team leader
Anaïs BarrelSelf - Geologist
Paul GatinelSelf - Geotechnician
Jacques TriclotSelf - Project manager
Rémi FortanétéSelf - Chief engineer