This is the drill used for the SH 1 tunnel from Waiwera going north to Puhoi, New Zealand. Drilling commences from the North end, drilling towards Waiwera. Starts formally on 20th Feb. 2006.
Drill machine. runs on 3Ø 1050 Volts ac:
Name-plate details from supply transformer:
Drill bit, about 1.2 meters in diameter, note water jets for cooling: