NEW : At least 44 injured in blast , including some police officers , died . NEW : New York woman died from cardiac arrest , mayor says . No asbestos in air , but it was found in six of seven piles of dust , etc . ` Department of Environmental Protection will continue to test debris .
NEW : At least 44 injured in blast , including some police officers , died . NEW : New York woman died from cardiac arrest , mayor says . No asbestos in air , but it was found in six of seven piles of dust , etc . Department of Environmental Protection will continue to test debris .