2 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 HoustonShelter-in-place placed for 2 east Texas cities after chemical release kills 1 person USA TODAYOne dead after chemical release at PEMEX Deer Park facility KHOU.comHCSO: 1 dead, many injured after Shell Pemex facility chemical release in Deer Park CW39 Houston