GZ principal Dr. Vojtech Gall will be presenting at the 12th International Conference Underground Construction in Prague, Czech Republic this week. The conference is endorsed by the International Tunneling and Underground Space Association (ITA). Dr. Gall’s presentation is entitled “Non-Disruptive Alternatives for Grade Separation Projects in Urban Settings Using Very Shallow Conventional Tunneling” and highlights two GZ projects: the Dulles Corridor Metrorail Project and East Side Access Tunneling Under Northern Boulevard. Click here to learn more about the conference.