Deer Park, Tx – The deadly gas that killed two maintenance workers at the Pemex refinery in Deer Park is hydrogen sulfide. When it was leaked into the air Thursday afternoon, more than three ...

The Permian Basin of West Texas and other oil-production regions are naturally saturated with hydrogen sulfide, a strong-smelling poisonous gas that forms underground as plants and organisms decay.

Hydrogen sulfide, a colorless gas that smells like rotten eggs, is produced naturally from decaying matter. This gas is lethal to breathe in, and hydrogen sulfide present in high concentrations ...