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Enbridge completes core work at Mackinac
25 November, 2019
Michigan – Rock sampling work is finished at the Straits of Mackinac, Enbridge announced November 21. The samples will be used for the final design of the gas company's Great Lakes Tunnel.

Fire safety
20 November, 2019
This article is a reprint of the paper first published in the Proceedings of the 8th International Symposium on Tunnel Safety and Security, Borås, Sweden, 14-16 March, 2018, and presented as a keynote address there. The article has been abridged from the original paper

Salini starts Seattle ship canal tunnel
19 November, 2019
Washington – A new stormwater tunnel will be built in Washington within a dense urban area where unexpected ground conditions might happen.

Epiroc and Orica announce semi-automatic explosives initiative
19 November, 2019
Global – Epiroc announced November 14 it has entered a partnership with Orica to jointly develop a semi-automated explosives delivery system, enabling safer and more productive blasting operations in underground mines.

Strabag to build Ashbridges Bay feeder tunnels
19 November, 2019
Ontario – The City of Toronto awarded Strabag a CAD 120M contract for the second section of the Ashbridges Bay project, the contractor announced November 18.

Boring Company starts tunnelling in Las Vegas
19 November, 2019
Nevada – The Las Vegas Convention and Visitors Authority (LVCVA) announced November 16 tunnelling has started for it's underground people mover.

Keeping Pace
14 November, 2019
Frank Grundholm, vice president for global HVACR sales at ABB Motion, explains how variable frequency drives (VFDs) are used together with electric motors for the effective control of rail and road tunnel ventilation fans

Forum Tunnel incident
14 November, 2019
A tunnel fire is never a positive event, but when there is no loss of life there is good reason to be thankful. Fläkt Woods issued this account of a recent incident

Keeping up the Pressure
14 November, 2019
A cut-and-cover tunnel in Italy will make use of high pressure compressed air in what engineers are claiming is a first for the Mediterranean country. Paola De Pascali spoke with Andrea Pigorini, the head of infrastructure engineering at Italferr, and a spokesperson for Salini Impregilo, to find out more

Adverse conditions
14 November, 2019
Tunneling at Vietnam’s arduous Thuong Kon Tum HEPP draws to a close.

Keeping safe
14 November, 2019
In this issue we have a fire protection angle. You will find several articles covering an incident in Gdansk, variable frequency drives, the impact of fire events on tunnel linings and a piece on the latest health and safety thinking in this area.

Central Interceptor project’s TBM ordered
14 November, 2019
New Zealand – The Central Interceptor wastewater project has ordered a 5.45m-diameter Herrenknecht EPB for its main 13km tunnel. The tunnel depth will vary from 15-110m, with a harbour crossing 15m below the seabed. The finished diameter of the tunnel will be 4.5m.

Protan hires personnel for move to tunnelling
14 November, 2019
Norway/Turkey – Protan has hired Ardnt Hedtkamp to lead its tunnel business in Central Europe and Simen Aaserud as its business development manager. The Norwegian industrial group had acquired Turkish tunnel membrane manufacturer Multiplan in August.

Leaked HS2 cost review says proceed
14 November, 2019
Great Britain – The High Speed 2 (HS2) project in the UK should go ahead, according to a leaked draft of the review into the project. Seen by British newspaper ‘The Times’, the report highlights the benefits to the North of England, despite significantly rising costs and falling estimates of the final return on investment.

Progress update from Isarco River Underpass
07 November, 2019
Italy – Salini Impregilo, Strabag, Consorzio Integra and Collini Lavori have completed 70% of the excavation work on the southernmost lot of the Brenner Base Tunnel project. This amounts to 3,800m of excavation as Tunnels and Tunnelling goes to press.

Bechtel opens Melbourne office to target infrastructure pipeline
07 November, 2019
Australia – Bechtel has opened an office in Melbourne. It stated that the move was to pick up work from the Victorian Government’s AUD 100bn infrastructure pipeline.

First two TBMs gear up for Pune Metro
07 November, 2019
India – Two Terratec EPBMs have been completed and shipped to the underground works on Line 1 of the 16.56km Pune Metro. The TBMs have already been despatched from the factory in China and are currently being shipped to the port of Mumbai. Both machines are expected to arrive in November and will be transported to Pune where they will be assembled and then tested on site in mid-December.

Metro Vancouver greenlights Massey tunnel option
07 November, 2019
BC – Metro Vancouver's board of directors approved the tunnel option suggested last month by a committee. The November 1 vote endorses the proposed eight-lane, immersed tube tunnel for the Massey tunnel replacement. Two lanes would be reserved for transit.

Clean water
31 October, 2019
Kristian Downs, export manager for Siltbuster explains the use of the company’s system on the Gothenburg Metro project

In the clear
31 October, 2019
Tunnelling below St. Louis will improve wastewater capacity and alleviate overflows, Desiree Willis, technical writer for Robbins, reports