Before revision: URL World Trade Center debris: After the attack, fire and subsequent collapse of the Twin Towers on September 11, 2001, the colossal pile of debris left on the site smouldered for more than five months.J.
After revision: (1.8 million tons)URL World Trade Center debris: After the attack, fire and subsequent collapse of the Twin Towers on September 11, 2001, the colossal pile of debris left on the site smouldered for more than five months.J.