New world record for tunnel excavation on L9 of the Barcelona Metro
READ MOREThe Hades TBM has set a new world record for tunneling, using an EPB TBM, in the works for Metro line 9 in El Prat del Llobregat, having excavated 70.5 meters of tunnel and placed 47 concrete rings, of 1.5 meters in length, in a single day.