Jens Classen has over 20 years of experience in tunnel engineering. He started his career at Züblin in Germany and became a tunnel engineer working on projects in Germany and abroad. In 2000, he became Chief TBM Manager for a Herrenknecht TBM on the Loetschberg Base Tunnel in Switzerland. From 2003-2011, he was the production manager for lots on the Gotthard Base Tunnel in Switzerland, overseeing the excavation using two TBMs and construction of 50km of tunnels. After the final breakthrough, he joined Herrenknecht as a consultant for hard rock tunneling and later led their business development for mining and hydropower projects. In 2013, he

1. Jens Classen, Dipl.-Ing.
Head of Mechanized Mining Department
TOTO Costruzioni Generali, Italy
Jens Classen started his career at the Tunnelling Department of Company Züblin of Germany, where he
soon became a tunnel engineer working on job sites in Germany and abroad.
In 2000 he became Chief TBM Manager for a 9,4m Herrenknecht TBM when a Joint Venture including
Züblin secured the contract for the southern lots of the Loetschberg Base Tunnel in Switzerland, the first of
the many planned transalpine rail tunnels.
In 2003 he transferred to CSC Construction Company of Switzerland who was then a partner in the Joint
Venture TAT, which worked on the southern lots of the Gotthard Base Tunnel. He became production
manager for the lots Bodio and Faido, being responsible for the excavation, again using 2 Herrenknecht
TBMs, and parallel inner lining of 50km of running tunnels, as well as 90 cross passages and 4 crossover
caverns.
After 8 years on the project Jens Classen left the site after the final breakthrough and joined Herrenknecht
(Switzerland) Ltd., the world leader in TBM manufacturing, as a consultant for hard rock tunneling and site
management. In this period he was also in charge of the Business Development for Mining and Hydropower
projects.
In June of 2013 he joined TOTO General Contractors of Italy as Head of the Mechanized Tunnelling
Department.