In the days after the terrorist attacks of Sept. 11, some workers and mourners at the World Trade Center site seized upon a cross-shaped steel beam found amid the rubble as a symbol of faith and hope.

For the past five years, the 17-foot-tall cross was displayed outside a nearby Catholic church. On Saturday it was moved again, to the site of the National September 11 Memorial and Museum, where it is to be in the permanent collection.

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