NY officials say no health risks after blast

New Yorkers are still questioning their air's safety after a steam pipe eruption spewed dirt and debris into the sky over midtown. Many remember the cover-up after the last major pipe rupture and the illnesses faced by workers at the site of the destroyed World Trade Center years after officials assured them lower Manhattan was safe. Mayor Michael Bloomberg on Thursday declared the air free of asbestos, saying "every single test" showed no asbestos in the air. Other city officials were unwavering in that assessment, as well.