In September, a tunnel boring machine (TBM) for the 14.7km Central Interceptor tunnel in Auckland, New Zealand, broke through into a 69m deep shaft at May
Working on behalf of the region's water company Watercare, the joint venture formed by Rome-based Ghella and Sydney-headquartered Abergeldie hailed the
Watercare’s Hiwi-i-te-Rangi giant Tunnel Boring Machine (TBM) has today (4 September) broken through into a shaft in May Road, Mount Roskill marking the halfway point of her 14.7kilometre journey to central Auckland as she creates the Central Interceptor .