Construction contractor Thiess has achieved a significant milestone in its work on a 420-kilometre tunnel which forms part of a multi-billion dollar gas project in Queensland.

In its latest announcement, Thiess said it had successfully tunnelled under ‘The Narrows’ of Gladstone in Queensland to connect Curtis Island to the mainland. Part of the $US18.5 billion Santos GLNG Project, the 4.3-kilometre tunnel is set to provide a conduit for installation of part of a 420-kilometre gas pipeline…