2 dead, 35 injured after chemical leak of hydrogen sulfide at Pemex Deer Park oil refinery USA TODAY2 killed, at least 35 injured after chemical release reported at refinery in Deer Park, officials say ABC13 HoustonTwo Dead After Chemical Leak at Pemex’s Houston Area Refinery Yahoo FinanceTwo dead, about 35 injured after hydrogen sulfide release at Deer Park Pemex plant Houston Public MediaChemical leak at Houston-area plant kills 2 workers and injures several others, prompting city-wide shelter-in-place CNN