Chemical leak at Houston-area plant kills 2 workers and injures several others, prompting city-wide shelter-in-place CNNBayou Buzz Axios2 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 HoustonAt least 2 killed, multiple injured when Texas Pemex plant leaks hydrogen sulfide CBS News