Ground zero museum takes shape

JOE DANIELS, 911 Memorial President, lifts the cover for a glance of an ambulance during a tour of the 911 Memorial Museum on June 27 in New York. Recovered from the World Trade Center after September 11, 2001, the vehicle will be part of the museum's permanent installment.

NEW YORK — Gray dust blankets everything in the subterranean halls of the unfinished National September 11 Memorial & Museum. But while the powder may look ominously like the ash that covered lower Manhattan after the terrorist attacks, this time it is a product of rebirth, not destruction.

After a yearlong construction shutdown because of a funding dispute, and additional months of cleanup following a shocking flood caused by Superstorm Sandy, work has been racing ahead again at the museum, which sits in a cavernous space below the World Trade Center memorial plaza that opened in 2011.