World's Largest Round Vault Door

[VaultDoors]

The dial turn knob got clipped off by the door as it was being shut during the filming of a video several years ago. I think it was the one newer video mentioned here but I can't get it to work on my computer. Maybe it can be seen in the video. Doug

Per this drawing by Holmes, remote combination vaults have only the dials on the outside and the locks (with bolt throwing mechanism) on the inside. I'm not sure if this is the case with the Cleveland Federal Reserve vault.