At 5:20 PM on 9/11/01 the only building with a World Trade Center address that stood on a different block from the rest of the complex, 47-story steel-framed 7 World Trade Center, underwent a sudden total collapse. Officials and all government reports published since the attack that mention the building blame its collapse on a combination of structural damage and subsequent fires. However, the available evidence on the condition of Building 7 prior to its collapse fails to document more than superficial structural damage (from the "collapses" of the Twin Towers) and small isolated fires.