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America Rebuilds: A Year at Ground Zero
Ground Zero Profiles
Engineering the Clean-Up
Artifacts
Video Stories
Imagining the Future
Dialogue
About the Program

Assisting the Rescue
Surveying the Damage
Assessing Buildings
Navigating the PATH
Understanding the Site
Stabilizing the Wall
Removing Debris
Supporting Structures
Extracting Hazards
Uncovering Property



Quick Facts

Sources

Removing Debris

Candle-stick diagrams of WTC

Try It This Way

RICH GARLOCK: In such instances, we provided diagrams to the contractors, illustrating the elements of the wall, how they went together, how much each individual piece weighed, and where it could be cut. Here they tried tying cables off to the wall and giving it a good couple of yanks. It didn't come down so they sent ironworkers up in a basket to cut along the backside, releasing it and then pulling it again with cables and grapplers.

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Image credits: Leslie E. Robertson and Associates