Carolyn Merritt, chairman of the U.S. Chemical Safety Board, on July 10 asked Congress to give the agency access to U.S. Occupational Safety and Health Administration records. The board investigated the 2005 explosion at BP's Texas City, Texas, refinery that killed 14 Fluor Corp. and Jacobs Engineering Group Inc. employees. During the probe, the board requested OSHA documents and interviews but was not given the information. Many board conclusions were based on OSHA information that was public. Merritt asked Congress for stronger investigative powers, including the authority to preserve evidence.