Earlier post (Page 8.) shows part of this..
The installed and little used, because it was too successful Black Fell retarder, put in to prevent over running of a set landing from Blackham's Hill.
Too successful, because it worked, the only trouble was it was difficult to release it to get the wagons to move again, so it was decommissioned.
Equally useless was the sand drag on the left, put in the early days of preservation, should stop a 125, or so the experts said, but no one told the six hopper wagons that ran straight through it in 1980!!
On the right was a loco shed to test underground loco brakes, added prior to closure by the N.C.B., the test track ran down (Behind the camera.) to Long Acre, under the ECML at Tyne Yard, and is now part of a foot/cycle way.
The shed was dismantled in the 1980's and the metalwork recovered by a rope hauled train, during a "Schools Open Day" by first dropping off two flat wagons on the right to be loaded with girders slid across and lowered onto the wagons,
whilst normal running was going on, but stopping short, then during the lunch break, between the morning and afternoon visits, these were then hauled partially up and dropped back to collect other pieces, then the whole lot hauled up to Blackham's Hill. All shunting done by indicator alone, as the driver can not see the Incline, from the Hauler at Blackham's.
Now before anyone asks, yes the driver did get his lunch, as the hauler can be driven whilst eating a sandwich, or having a brew as well, trust me it can.