The incident caused two fatalities and 13 injuries. An update shared by the u.s Chemical safety and hazard investigation board revealed the two workers who died were trying to escape moments after a gas leak at the pemex deer park refinery. And mexican investigators have begun probes of a fatal chemical leak at a houston area oil refinery on thursday owned by mexico's state oil firm pemex, officials said on friday. The investigation continues after at least two people were killed in a hydrogen sulfide leak at the pemex refinery off highway 225 in deer park. A chemical release caused two deaths at pemex deer park on thursday night, authorities said.
Five months after a hydrogen sulfide leak at the pemex deer park refinery killed two contract workers, the u.s Chemical safety board said they both died while trying to flee the scene.
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