(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.

As I suspected, as it looked like an industrial line, just had a look at some old OS maps and the 1947 one has a brick and tile works there.

https://www.francisfrith.com/uk/finchale-priory/maps