New world tunnel-excavating record set on Barcelona Metro Line 9
READ MOREThe TBM Hades has set a new world tunnel-excavating record for EPB TBMs at the Metro Line 9 site in El Prat del Llobregat, having dug 70.5 metres of tunnel and laid 47 1.5-metre-long concrete rings in a single day.
The record was set on 15 October last, yet another achievement in the string of records set previously by ...