Search Results: 'Healy'

Stay in the tunnel
18 October, 2011

Long tunnels for the Longhorn state
15 August, 2011
In the southwest, Texas is making work in a region not known for big tunnelling projects, Nicole Robinson reports

Stubborn to a fault
10 June, 2011
Construction of Intake No. Three at Lake Mead, Nevada, requires tunnelling beneath the lake and blasting at Saddle Island. With a deadline driven by the region’s drought conditions and drinking water at stake, progress on the project’s longest tunnel has been marred by a fault near the starter tunnels as Nicole Robinson reports from site

In the mix on site
11 February, 2011
There are many considerations when deciding how to supply the concrete necessary for lining and support in most tunnelling projects. Not least of these are how to source large volumes of material on site, and to deliver it to the location of use. With usually restricted surface space, and often long transport distances, this is no easy task. Maurice Jones checks on some developments to make it easier