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Welcome to The Networking Site for Tunnel & Underground Professionals! 

Membership to is by invitation-only. If you have an invitation-code, please press the 'register' button. Otherwise, please scroll down to read on how to receive an invitation.

Join & Network!

Joining is free of charge. But is also an invitation-only network.This is a measure to keep the audience strictly tunnelling-related. There are 2 ways to join:

  • Ask your colleagues to invite you
  • OR:
  • Send an email to and ask for an invitation-code. Please do not forget to include in your email info about your involvement with tunnelling. A link to your LinkedIn profile will be great!

Keep Up!

Keep up with the news and the developments of the tunnelling word!

Follow the members' postings to learn about the projects in every corner of the world as well as the technological developments in the field!

Help each other!

Connect to other members. Networking will enrich your life! Connecting is one of the important ingredients of the success. Above all, it also leads to increased enjoyment of life by meeting interesting people in interesting places! Your contacts at can help you to get the next challenge in your career!

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