ACCIONA is Using Drones During the Tunnel Construction Phase to Obtain Digital Models
https://www.albawaba.com/business/pr/acciona-using-drones-during-tunnel-construction-phase-obtain-digital-models-1356032
The machine that even Jules Verne was unable to imagine in the group Tunnel Technologies
https://www.youtube.com/watch?time_continue=2&v=Rv0FuROtsJo&feature=emb_logo
#tunnelboringmachine #acciona #TBM #accionaTBM