H2S gas is present during oil and gas exploration but can also be found in the pulp and paper industry, sewage and treatment facilities, landfills and in farming operations where manure is stored. Inhaling even the smallest concentration of H2S gas will have an immediate effect on the human body; inhaling high concentrations of this gas is fatal. Therefore it makes sense that every worker who may be exposed to this gas must first know where it is commonly found, how it can be detected through continuous monitoring and most importantly, emergency action steps required to stay alive in the presence of H2S.