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The quality of our design works, reviews and studies is the result of continuing technical education and professional experience from well more than a hundred tunnel safety and tunnel ventilation projects during the last 20 years worldwide in more than 20 countries on 5 continents, including Australia, Austria, Belgium, Brazil, Czech Republic, Chile, France, Georgia, Germany, Greece, Ireland, Italy, Russia, Slovakia, Slovenia, Switzerland, Turkey and the USA.

expertise and scope