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
Whitehaven haulage. William Brownrigg, Whitehaven's most eminent scientist, was the first to investigate the explosive mine gas fire damp. The Lowthers' technological advances continued when their chief steward, Carlisle Spedding sunk Saltom Pit in 1729. Saltom Pit was the second pit to be sunk beneath the sea. At Saltom Pit, Carlisle Spedding pioneered the use of explosives in sinking shafts. He also invented the first form of 'Safety Lamp', it was called the Spedding Wheel or Steel Mill. On occasions the Spedding Wheel caused explosions or fires but it was a major improvement over the naked flame. Saltom Pit was constructed