Search Results: 'Heijmans'

Send in the divers
10 November, 2011
The expertise, ingenuity and bravery of commercial divers working with tunnels is unsurpassed. The services of divers can be called upon during normal operations as well as emergency situations, with each task placing its own demands on men and equipment. Maurice Jones, with Nicole Robinson, has been checking up on what is needed and why

Sinking a station
19 October, 2011
An extraordinary variation on the immersed tube method, combined with innovative foundation works, has been used to take the Amsterdam north-south metro line underneath the 19th century Centraal Station, reports Adrian Greeman