Question: After the worst rail disaster in Australian history, who was legislated as the combat authority for responding to major structural collapse incidents within the state of New South Wales?
Sentence (from "Granville rail disaster"): The Granville rail disaster occurred on Tuesday 18 January 1977 at Granville, a western suburb of Sydney, Australia, when a crowded commuter train derailed, running into the supports of a road bridge that collapsed onto two of the train's passenger carriages.
Relevant evidence: No