GZ Principal Dr. Vojtech Gall will be presenting at the 14th Annual Breakthroughs in Tunneling Short Course in Denver, Colorado, September 13 – 15. Celebrating it’s 14th year, the conference will cover all aspects of tunneling and is the longest running of its kind. Dr. Vojtech Gall’s presentation “NATM/SEM Design and Construction” will provide an insight into the tunnel design principles of the Sequential Excavation Method (SEM) and will address the main aspects of SEM tunneling. To learn more about the 14th Annual Breakthroughs in Tunneling Short Course, please visit the conference website here.