Search Results: 'AECOM'

Drilling Dilemmas
17 October, 2014
The choice between TBM and drill and blast is an often-faced dilemma as the two methods have been competing for more than 30 years. S. Paul Singh, Mining Engineering Department – Laurentian University, Sudbury, Ontario, and Derek Zoldy, AECOM, Markham, Ontario, discuss the conditions for the judicious selection of excavation method.

In the nick of time
19 March, 2014
As the Hudson Yards development moved toward construction, a small window of opportunity for new rail infrastructure connecting New Jersey to Manhattan began to close. Nicole Robinson looks at the tunnel box project securing the right of way for potential tunnels under the Hudson River.

Water works
19 March, 2014
Many east coast cities are tunnelling to relieve CSO systems among other water concerns. Construction contracts awarded last year begin to mobilise, while an outgoing mayor marks milestones Nicole Robinson reports.

Connect4
17 January, 2014
It has been two years since Tunnels & Tunnelling North America covered the Water Treatment Plant Four (WTP4) project in northwest Austin. Now, a couple of years on, we're looking at the raw water system contract once again. Anticipation is building; the project is nearing completion. Technical journalist Rhian Owen reports