Sewer gas Sewer gas Sewer gas is a complex mixture of toxic and nontoxic gases produced and collected in sewage systems by the decomposition of organic household or industrial wastes, typical components of sewage. Sewer gases may include hydrogen sulfide, ammonia, methane, esters, carbon monoxide, sulfur dioxide and nitrogen oxides. Improper disposal of petroleum products such as gasoline and mineral spirits contribute to sewer gas hazards. Sewer gases are of concern due to their odor, health effects, and potential for creating fire or explosions. Sewer gas is typically restricted from entering buildings through plumbing traps that create a water seal at potential
Lakshmi Mittal government said it wanted to renegotiate the 2004 sale to ArcelorMittal. Employees of Mittal have accused him of "slave labour" conditions after multiple fatalities in his mines. During December 2004, twenty-three miners died in explosions in his mines in Kazakhstan caused by faulty gas detectors. In 2002 Plaid Cymru MP Adam Price obtained a letter written by Tony Blair to the Romanian Government in support of Mittal's LNM steel company, which was in the process of bidding to buy Romania's state-owned steel industry. This revelation caused controversy, because Mittal had given £125,000 to the British Labour Party the previous year.