TUNNELS

In the 70s, ETESCO pioneered the introduction in Brazil of tunnels execution technology by mechanized means using shield equipment with TBM machines. The company also designed some specific equipment for its needs, with diameters from 1000 to 3400 mm.

In the 70s, ETESCO pioneered the introduction in Brazil of tunnels execution technology by mechanized means using shield equipment with TBM machines. The company also designed some specific equipment for its needs, with diameters from 1000 to 3400 mm.