2 die in hydrogen sulfide release at Deer Park Pemex refinery, authorities say Houston Chronicle Houston chemical plant leak kills 2, injures at least 35 Fox News2 killed, at least 35 injured after chemical release reported at refinery in Deer Park, officials say ABC13 HoustonPemex Deer Park reports Hydrogen Sulfide release, 2 killed, dozens affected; Deer Park shelter in place lifted FOX 26 HoustonChemical leak at Houston-area plant kills 2 workers and injures several others, prompting city-wide shelter-in-place CNN