Electrical equipment in hazardous areas the participation of operations, maintenance, safety, electrical and instrumentation professionals, the use of process diagrams and material flows, MSDS and any pertinent documents, information and knowledge to determine the hazards and their extent and the countermeasures to be employed. Area classification documentations are reviewed and updated to reflect process changes. Soon after the introduction of electric power into coal mines, it was discovered that lethal explosions could be initiated by electrical equipment such as lighting, signals, or motors. The hazard of fire damp or methane accumulation in mines was well known by the time electricity was introduced, along with the
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.