 A tunnel boring machine (TBM), provided by Robbins Company and equipped with 483mm cutters, was used to bore the adit tunnel over the course of ten months during which it advanced at a rate of 18.5 meters per day.During the spring of 2010, work commenced upon the boring of the Ceneri Base Tunnel itself.During March 2010, it was announced that blasting had begun on the main drives of the twin-bores.