Artifacts, including a grapple claw and a sign from the World Trade Center PATH station, on display at the National September 11 Memorial Museum. Photo by Jin Lee.  Photo 14 of 14 in At Ground Zero Bedrock, the 9/11 Museum Prepares for Visitors

At Ground Zero Bedrock, the 9/11 Museum Prepares for Visitors14/14

Artifacts, including a grapple claw and a sign from the World Trade Center PATH station, on display at the National September 11 Memorial Museum. Photo by Jin Lee.

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