Deadly Convention Center Collapse A construction worker was killed and two others injured Tuesday in downtown Pittsburgh. news_police_tape.jpg l video.gif thePittsburghChannel.com http://www.thepittsburghchannel.com/news/1231862/detail.html http://cf.ibsys.com/pit/sh/videoplayer/playlist.cfm?contentid=1232401&streamtype=rm&sitekey=pit&owner=pit&streamspeed=56k PLAY headline