The bluish debris in the foreground is from cutting off the tubes from the firebox tubesheet.
Looking at the staybolts around the combustion chamber on the fireman's side.
Same thing lower on the fireman's side.
Looking toward the smokebox.
Close up of a seam.
Staybolts on the engineer's side.
Staybolts on the engineer's side.
Close up of a seam.
Close up of a seam.