I'm working on the vegetation and the twin silos.
An earlier clue: Victoria.
I've spent the day rejecting lots of places.
Small enough to have only a twin, but large enough to have that fuel? depot.
I'm looking at northern Western District, which was more grazing than grain.
This entry from memory of a recent question which I fielded: 'Why are there two silos in North Geelong?'. I've got no memory of them, and suggested that they were for local milling, nothing to do with exports.
North Geelong / North Shore industrial zone.