After completing the 2.8km main access tunnel (MAT) in 2022, TBM Lady Eileen Hudson started on her second tunnel excavation for Snowy 2.0 – the 6km tailrace tunnel, which will connect Talbingo Reservoir to the underground power station complex. The Lady Eileen was disassembled at the MAT and reassembled at the Talbingo adit with new components including a cutterhead, shields and main drive.