A City of Ashes

River of Steel
Steel from the World Trade Center stacked in New Jersey at the edge of the Hudson River. "Day after day, the same material, a never-ending stream of twisted, banged, dented [metal]," says Warren Jennings of Metal Management Northeast, one of the scrap recycling facilities that handled the steel. "Every day it just kept coming and coming and coming."

• 9/11 From The Sky