Building on 25 years of experience, Gall Zeidler Consultants is a global engineering consultancy with offices across five continents, delivering innovative solutions and engineering excellence in the tunneling and underground industry.


Our diverse portfolio reflects our commitment to sustainability, the safety of people and the environment, and long- standing client partnerships as we help shape resilient infrastructure for the future.


El thi k underground


Elevated www.gzconsultants.com Visit us at Booth 806 at the NAT Conference 2026!


Innovative Tunnel and Ground Engineering


Practical and sustainable solutions for:


Tunnel Design | Site Services || Tunnel Rehabilitation Geotechnical Engineering | Mining Support | Temporary Works


www.dr-sauer.com Salzburg | London | Washington | Toronto | Tel Aviv


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