2 dead, 35 injured after chemical leak of hydrogen sulfide at Pemex Deer Park oil refinery USA TODAYChemical leak at Houston-area plant kills 2 workers and injures several others, prompting city-wide shelter-in-place CNNThe 2 people killed after a leak at a Texas oil refinery worked for a maintenance subcontractor The Associated PressTwo dead, about 35 injured after hydrogen sulfide release at Deer Park Pemex plant Houston Public Media2 dead, 35 others affected after chemical release at PEMEX facility in Texas ABC News