Visit Your Local PBS Station PBS Home PBS Home Programs A-Z TV Schedules Watch Video Donate Shop PBS Search PBS

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

Crater amidst the wreckage

Avoiding the Voids

RICH GARLOCK: Some craters had been located; others were not. If you were on top of debris, it could be compact 70 feet down, or it could be a shallow shelf masking a crater beneath. Here, I'm standing three levels down on intact structure, near the area of the Secret Service parking lot. To the right, you can see light shining through an open crater. However, looking to the left, the hole is hidden by intact structure overhead. When we saw voids like these, we would go straight to the foreman and say, you have got to yellow off this area, you can't send machines in here."

<< 7 of 8 >>



Home | Ground Zero Profiles | Engineering the Clean-Up | Artifacts | Imagining the Future | Dialogue | About the Program
Buy the America Rebuilds video | Program and Site Credits


© 2002 Great Projects Film Company, Inc. All Rights Reserved


Image credits: Leslie E. Robertson and Associates