By sinking the rail, jobs are created, traffic congestion is eased, access between areas east and west of the line is greatly enhanced, a 'green' strip established, major opportunities for residential, commercial, public and aged care development.

It will need to be a joint venture of Federal & State Governments as well as private industry investment.The principles of construction have already been proved by the sinking of the Perth station and the construction of the Farmer Freeway Tunnel.

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