Work has again been halted on the West Gate Tunnel project, this time after what has been described as a minor underground collapse in Melbourne's inner west.
The Australian Workers' Union has confirmed no one was hurt when part of a cross passage between the twin tunnels collapsed in the early hours of Friday.
The union's construction organiser, Joel Archer, said it happened about 1 kilometre in from the tunnel entrance at Yarraville and between 300 metres and 500 metres underground.
