US reports 13.5 tons of hydrogen sulfide released at Texas refinery in October incident

The U.S. Chemical Safety Board reported that 13.5 tons of hydrogen sulfide gas were released at Pemex’s Deer Park refinery in Texas on October 10, resulting in two deaths and injuries to 13 others. The incident occurred during maintenance work when contract workers accidentally opened a flange. The release lasted about an hour, prompting local authorities to advise residents to stay indoors. Investigations are ongoing, involving multiple agencies, including the Occupational Safety and Health Administration. Lawsuits have been filed against Pemex and former owner Shell Plc by affected families and residents.