Figures 2a-2d show various views of the ten inner vaults at the Circle building. The inner vaults were cleaned after the weapon dismantlement process was complete. The blue shelves in figure 2d were installed during the nuclear disarmament process in the early 1990s to store the HEU metal recovered from the nuclear components in a criticality-safe manner.

Figure 2a

Figure 2b

Figure 2c

Figure 2d