South Tower | 9:59 a.m. : FINAL MOMENTS
Unable to hold the top portion's 110,000-ton weight, the tower crumples floor by floor. Nothing remains but rubble.
South Tower | POSTMORTEM
Structurally crippled to a greater degree than its twin, the south tower remained erect for 56 minutes before crumpling in 10 seconds.
 Intro | North Tower |South Tower | Pentagon
GRAPHICS BY DOUG STERN - USN&WR
REPORTING BY AVERY COMAROW, DAVID LAGESSE, AND KENNETH TERRELL-USN&WR
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