Search Results: 'S A Healy'

Clean hat trick
24 November, 2022
Nicholson Construction has had three contracts for Project Clean Lake in Ohio, and each has posed its challenges. Keren Fallwell reports

NEBT contract awarded to Salini Impregilo-Lane JV
13 July, 2017
USA – Salini Impregilo and The Lane Construction Corporation announced July 7 they have won a USD 580M contract to build the Northeast Boundary Tunnel (NEBT) project in Washington, D.C.

From sea to shining sea
06 February, 2012
Demand for tunnels in North America is strong to meet public transportation and water conveyance needs. Nicole Robinson highlights projects in the region

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

Vegas tunnel delayed
06 September, 2010

Home run for river clean up
03 August, 2010
Portland, Oregon has had more than its fair share of tunnelling work in recent years, all geared to improving the quality of its waterways particularly the Willamette River. A key and largest stage in this programme has been the East Side Combined Sewer Overflow Tunnel Project, which is now approaching its conclusion after passing several milestones in the development of North American tunnelling. Maurice Jones reports.

Lake Mead TBM unveiled
24 May, 2010

Bidder drops out of Highway 99
31 March, 2010

Groundwater inflow into Hard Rock Tunnels
22 September, 2001
Jack Raymer, PG, points out that permeability is best evaluated as a statistical distribution for accurate groundwater inflow estimation. The Chattahoochie Tunnel in Cobb County, Georgia, US is taken as an example using packer tests on boreholes along the tunnel alignment.

Final decision time for Seattle Sound Transit
01 February, 2001

Seattle rail talks suspended
02 January, 2001

Seattle picks contractor but keeps options open
14 October, 2000

Contract confusion reigns in Seattle
01 December, 1999