The state government has questioned the validity of a 34-year old state agreement that Midwest Corporation Ltd and Yilgarn Infrastructure Ltd are relying on for a $2 billion railway and port project in the Mid West region.

The state government has questioned the validity of a 34-year old state agreement that Midwest Corporation Ltd and Yilgarn Infrastructure Ltd are relying on for a $2 billion railway and port project in the Mid West region.