Source: wiki/7_World_Trade_Center and the building collapsed completely at 5:21:10 pm, according to FEMA

Source: at video-position 1:37 said in the bbc reporting ...in the Salomon Building when it collapsed...

Source: wiki/7_World_Trade_Center Salomon Brothers signed a long-term lease in 1988 and became the main tenant of 7 WTC.

Source: wiki/World_Trade_Center Die Konstruktion sollte Orkanen mit Windgeschwindigkeiten von 300 km/h standhalten und den schlimmsten Erdbeben.

said by Lonnie Penn, E.M.T.(E.M.S.); presented by Richard Gage at video-position 28:55; youtube-channel-name: AE911Truth ...Prior to the collapse of WTC2 We felt the ground shake. You could see the towers sway and then is just came down

said by Paul Curran, Firefighter (F.D.N.Y); presented by Richard Gage at video-position 29:29; youtube-channel-name: AE911Truth ...Prior to the collapse of WTC2 ...all of a sudden the ground just started shaking. It felt like a train was running under my feet. ... The next thing we know, we look up and the tower is collapsing.

said by Bradley Mann, Lieutenant(E.M.S.); presented by Richard Gage at video-position 29:41; youtube-channel-name: AE911Truth ...Prior to the collapse of WTC2 Shortly before the first tower came down I remember feeling the ground shaking. I heard a terrible noise, and then debris just started flying everywhere. People started running...

said by Cruthers, Frank; presented by Richard Gage at video-position 29:51; youtube-channel-name: AE911Truth ...Prior to the collapse of WTC2 ...an explosion... appeared at the very top, simultaneously from all four sides, materials shot out horizontally. And then there seemed to be a momentary delay before you could see the beginning of the collapse

Source: wtc.com/about/history 24.Juli 2001: Larry Silverstein completed the largest real estate transaction in New York history by acquiring the World Trade Center for $3.2 billion...

Source: www.zeit.de Vor Gericht errang Silverstein einen Teilerfolg, rund 4,6 Milliarden Dollar.