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
Caliban in the Coal Mines God, You don't know what it is — You, in Your well-lighted sky — Watching the meteors whizz; Warm, with a sun always by. God, if You had but the moon Stuck in Your cap for a lamp, Even You'd tire of it soon, Down in the dark and the damp. Nothing but blackness above And nothing that moves but the cars … God, if You wish for our love, Fling us a handful of stars! Caliban in the Coal Mines Caliban in the Coal Mines was written by the American poet Louis Untermeyer (1885–1977) and published in his 1914