International Tunneling and Underground Space Association
 | The topic of this article may not meet Wikipedia's notability guidelines for companies and organizations. (July 2013) |
 |
The International Tunneling and Underground Space Association is an organization founded in 1974, comprising currently 75 member nations and 310 affiliate members, aiming to encourage the use of the subsurface for the benefit of public, environment and sustainable development, and to promote advances in planning, design, construction, maintenance and safety of tunnels and underground space.