Upper Tamakoshi Hydro Electric Exploration Tunnel Project
| Project | Upper Tamakoshi Hydro Electric Exploration Tunnel Project |
| Employer | Joint Venture Norconsult AS (Norway) - Lahmeyer International GmbH (Germany) |
| Works | 500m of D shape tunnel 3.57m2 area and 3 nos of 14m2 chambers |
| Period of Construction | March 26, 2007 - March 25, 2008 |