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
Ballingarry Coal Mines crisis. Maintenance of the mines was continued for a period, and disaster was narrowly averted in 1973 when an underground fire threatened the lives of 17 workers. Despite these efforts the mines closed, and with the pumps disconnected the pits flooded. The second oil crisis resulted in soaring fuel prices, and it appeared the mines would once again be seen as a viable enterprise. In 1978, Kealy Mines commenced explorations in the area. The name derived from the surnames of its two principals, Patrick Keating, a civil engineer originally from Ballylooby in Tipperary and Gilbert Howley, a native of Co.