During the site visit at Frattini and Tolstoj stations of the new Milan M4 line we participated in the arrival of the TBM (Tunnel boring machine) dedicated to the construction of the even gallery. BMS Progetti took part in the design of the first 5 stations of the West section (San Cristoforo – Solari) and for the occasion we thank the Salini Impregilo team and Eng. Alvisi for their welcome on site.