I'll start with 4.
Mont Park goods line.
Broadmeadows branch line possibliy to the Army Barracks
The Ross line.
The Westgarth bricks factory line.
If the line died or does not have any of the indications of where it
might have gone, just supply a start, via and end points. (Melways
ref's helps. thanks.
PS I Know about the Fairfield branch line, It still has the 22 foot
sections of track installed.
Cameron.