New York staff return to Wall Avenue on 17 September 2001, following the 9/11 assaults.
Dozens of individuals going again to work wore face masks to guard themselves from the mud and smoke from the collapsed towers of the World Commerce Centre.
It might take nearly 9 months to clear the hundreds of thousands of tons of rubble at Floor Zero, the place the World Commerce Centre had stood.
Initially broadcast 17 September 2001.
