The picture on the left shows how the equipment overlapped with the beams dismounting onto the floor. A portion of the floor also ran up the wall about 4 feet on the right side of the picture (not seen in image). The vault runway stretched across the floor on the left side (not shown).
The images below show the process of the renovations where the wall (shown to the right of the beams in the picture on the left) was removed.
As well the image below shows the hole created for the underground pit.