(20 Jan 2022, 4:33 pm)Andreos1 wrote The one that jumps out to me, is the line which went to Phili Depot and had the spur with the Leamside line at Elba Park.

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Intrigued about that collection of lines near Frankland Prison. 
Can vaguely remember some concrete buildings in that area, but can't remember what they were for. 
Didn't know there were any lines there at all.

The remains of the buildings near the prison estate are the Brasside & Frankland brickworks, closed late 1950s/early 1960s.
Finchale and Frankland collieries were also close by depicted by the fan of lines, railways arrived in the 1840's on the Earl of Durham's estates and the two collieries closed in the early 1900s, but both were reworked between 1922 and 1932.