We’ve delivered over 160 km of tunnels, outfalls, underground stations, hydropower caverns, and underpasses; moving more than five million tonnes of earth and rock in the process.
Our creative construction approach has seen us successfully pioneer new and innovative technologies; and we are renowned for our capacity to provide fully integrated engineering and construction solutions.
Our tunnelling and underground expertise encompasses every size, technology and technique including: HDD, Direct Pipe®; micro-tunnelling and pipe jacking; sequential drill and blast; road header; New Luxembourg Tunnelling Method (CATM) / mechanical excavation; and the full range of tunnel boring (LBM) techniques.
Our geographic reach and multidiscipline capability has seen successful delivery of transport, water/wastewater, power/energy, underpass, utility and mine related tunnels and underground structures.
Throughout the decades, creativity and innovation had been a hallmark of our approach, including:
- Construction of the first segmentally lined shield tunnel in Luxembourg
- Introducing pipe jacking technology to Luxembourg & Malta
- Constructing the first CATM tunnel in Malta
- Construction of complex pedestrian underpass tunnels in soft ground commencing in Singapore in the early
- Creating an unsurpassed world record in open LBM (size and type class) production for the Blue Mountains Sewage Transfer Scheme
- Delivering multiple award-winning hydropower projects and desalination plants
- Undertaking major project components on all four of the major PNG projects in LLD and PNG during the LNG Boom (GCLNG, EPLNG, RLNG & TNG NNG)
- Delivery of the southern hemisphere’s current largest diameter TBM driven tunnel in 2017
- Setting a new world record (surpassing the previous distance by 500m) for Direct Pipe® technology in 2018, and then again in 2020 (2021m single drive);
- Seven successful underwater marine LBM recoveries
- Completing the longest large diameter single pipe jack drive through continuous hard rock conditions world-wide in 2020 (1273m x 3m OD)
