The building
What the dye stains on the brick actually are
A band of colour runs along the west wall at waist height, and the architects argued to keep it. This is where it came from.
Three notes about the building
The rooms
June, and the two rooms with no curtains
The glass under the sawtooth roof has no curtain, as there is nothing to keep out.
The carding room
Why the machine bases were filled instead of lifted
Taking them out would have meant taking out the floor, and the floor is the oldest thing in the building.