May 21, 2012 at 07:50 PM
Updated Story A nonprofit public interest group has launched an investigation of OSHA cases and the results of the agency's probes, opening a planned series of reports on workplace issues with a piece about a deadly 2009 explosion at a Pennsylvania plant that ended without any citations against the company. The Center for Public Integrity opened the new series, called Hard Labor, which it says focuses on safety, health and economic problems confronting workers in the U.S., with a story about a man's death in the 2009 explosion at U.S. Steel’s Clairton Plant near Pittsburgh. The group says in s