On Monday, April 15th, Brendan Barry worked on No. 9's tank. It's in Bay 2, tipped 90 degrees backward. This picture shows the top, with a square cut out for access, later to be welded back in. The circular fill shute has been taken off. Those items near the top of the picture are resting on the rear wall of the coal space, which would normally be vertical.
For this picture the camera was just inside the temporary access hole and pointed steeply upwards. The darker area at left is the left-side wall, and the steeply inclined "stripes" are actually stiffeners—normally horizontal--for that wall.
The lighter area at the right is the bottom of the section of the tank that's to the left of the coal space, and the round opening is for water flow to the injector on the fireman's side of the locomotive.
Let's hear it for Brendan for tackling this work!