Mine safety in coal mines, which in turn can initiate more extensive coal dust explosions. For this reason, rock dusts such as limestone dust are spread throughout coal mines to diminish the chances of coal dust explosions as well as to limit the extent of potential explosions, in a process known as rock dusting. Coal dust explosions can also begin independently of methane gas explosions. Frictional heat and sparks generated by mining equipment can ignite both methane gas and coal dust. For this reason, water is often used to cool rock-cutting sites. Miners utilize equipment strong enough to break through extremely hard
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.