MSL Lyttelton-Rolleston [1A]: Christchurch Station 1

So here is what is being mapped first of all.

This area just had industrial sidings except for B Shed. As you can see the map tile boundaries conveniently end just off the west side of the Colombo St overbridge.
This map shows the B shed area itself. Opposite it are the Dalgety premises with quite a bit of track in there. This today is the site of Harvey Normans. There is a coal yard to the east.