"… U.S. Chemical Safety Board, which has sent a team of investigators to the Citgo refinery in Corpus Christi. It’s not yet clear how much of the acid, known as HF, …"

"… the path of a toxic cloud in the event of an accident.A close call at the Citgo refinery was one of three major accidents involving HF in 2009. The CSB investigate …"

"… nts have sparked concern. Federal investigators have twice deployed to the Citgo refinery in Corpus Christi, Texas, since 2009 in response to accidents that unleash …"

"… p;stemming from a release of potentially lethal hydrofluoric acid from the Citgo refinery in Corpus Christi, Texas. They were no broader than the draft Tesoro recom …"