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Slurry wall: The wall that held

Name: Slurry wall: The wall that held
Uploaded: 2013-04-21T12:00:00-0400
Duration: 1 min 29 s
Description: 9/11 Museum Director Alice Greenwald shows Lesley Stahl the slurry wall -- an unsung hero of 9/11 that helped protect the city from flooding after the attack.

9/11 Museum Director Alice Greenwald shows Lesley Stahl the slurry wall -- an unsung hero of 9/11 that helped protect the city from flooding after the attack.