Palmers’ engine erecting shop in 2007, demolished the next year (2008). A view of the eastern end where a 2 storey office ("dwelling house" in 1887) had been removed. See the pinkish colour of the left hand side, perhaps paint, or pollution? Size of the building: 400' long, 59' wide, 50' high.
Jim Cuthbert is "confident that (this) was the Engine Erecting Shop". Photo: Jim Cuthbert (Jarrow).
Click on these links for comparisons : c1960(i), c1960(ii),1900, 1917, 1887, 1966, c1968, 2007(i).
Also see the full wide 1900 view & labels here.

Image of Palmers’ engine erecting shop in 2007.